User manual - Computer Graphics and Interactive Systems
Contents
1. January share wean ee fae End year 1961 a Processing options Processing options Figure 8 Time interval selection The firth menu layer Process options is used for naming the process Every new process has a name and a description that improve the search action among other processes The start processing button is used for starting the process execution on the Grid nodes and remains inactive if the user does not give a name and a description for this process It is important to notice that all the required inputs have some default assigned values The HDF and temperature NC inputs have as default value the first file selected in the two combo boxes and the interpolation algorithm is applied for the entire HDF area There is also a default value for the time interval The lower and upper boundaries of the year interval are both equal to the minimum value in the years related combo box and the month interval is set to January e g 1961 January 1961 January Even though there are default values for every input data the process execution could not begin until it has a name and a description The left image from Fig 9 presents an example when the start processing button is disabled meaning that the process execution could not begin On the other hand the right image represents a valid example of a Grid process execution Upload file Upload file Select geographical area Select geographical area Time interval selection Time2. 3 1 Method presentation Coarse to fine component uses some static input datasets including satellite images in order to provide a temperature map for a chosen geographical area It is based on a non linear weighted interpolation technique for computing the temperature values in the output map The main goal of this component is to generate a map of the temperature distribution over a geographical area For this some satellite images NC coarse resolution image and HDF fine resolution image are used images that contain information about specific geographical area and information about temperature values from another area The interpolation algorithm is applied on the region obtained by overlapping the two geographical areas The meaning of every interface component will be detailed in the next section 3 2 Input and output dataset The general view of this component at interface level is presented in Fig 5 As can be seen every tab in the interface is associated with one of the components that are detailed in this user manual e g 3 tab corresponds to the calibration component Fine to coarse Gpp computing Processing status User options About Green View testuser Logout Upload file Full screen Upload NC data file Upload HDF resolution file Input NC data file Output HDF resolution file wopsznae E i y i APOLAND CE mae ky GERMANY KAZAKHSTAN to A o 7 J ete N s Bi Tia KYRGYZS
3. Search process by date Display all the processes that have the start time in the time interval specified through the calendar buttons e Show all processes for This is the most general search meaning that all the processes for the current users will be displayed in the table presented in Fig 24 There are three types of filters that could be applied for every search option presented above a Show only active processes limits the search results to the processes that are in SUBMITTED or RUNNING status b Show only completed processes only DONE status processes are displayed to the user c Show only cancelled processes refers to the processes in CANCEL status d No filters no filters are applied on the search result The search result table contains basic information about the process name description and status Every row in the table has a different color based on the status of the process The color meaning is the following Red color cancelled processes Blue color submitted processes Orange color running processes Green color done processes The user has the possibility the view the inputs and outputs for every process in the search result table by clicking on the process name marked with blue The effect of such an action is presented in Fig 25 At this moment the information about the execution of the clicked process 1s displayed in the following structure the ID of the process the inputs and the lo
4. application based on the process execution type Guest it uses a set of default certificate in order to execute process on the Grid Using its own certificates only users with a valid certificate could try this option Using the My Proxy server this means that the user has uploaded its own certificate on another server and it can generate a proxy in order to execute the processes on the Grid infrastructure Changing one of the attribute in the database is automatically followed by a logout action in order to refresh the modifications made by the user 7 1 How to modify the current user setting This option gives the user the possibility to change the account settings It can change its name password email description or it can specify another CE Computing Element on the Grid infrastructure for job processing All the time the current user knows what status has in the process execution Guest Certificate owner or proxy owner What is more interesting is that it can change this status by simply selecting another status form the combo box presented in Fig 26 The content of the combo box is different for every user because not every user owns a certificate or a my proxy certificate Modify user settings Hame Password Email E Descnption Cancel CE Optional emi cengccacad bg Select the process execution mode Current status Guest Use guest settings Figure 26 Changing the accoun
5. geographical area In this scenario we apply the interpolation method on the entire HDF area in order to reduce the complexity of the scenario In a real time execution the user could specify its own geographical area by using the techniques mentioned above a Apply interpolation on the entire HDF region Figure 12 Geographical area selection Step 3 time interval selection This scenario takes into account a 1961 January 1963 March time interval This is only an example meaning that for other processes the time interval could be different from this one s Interval selection J Specific month selection Year Month Period start 1961 January wj Feriod end 1963 March Y Figure 13 Time interval selection Step 4 naming the process In this case the process name is Test and its description is set to Coarse to fine scenario After all the four steps are completed the user can click the start processing button for starting the process execution on the Grid nodes Process name Test Process description Coarse to fine scenario Start processing Figure 14 Naming the process 4 Fine to coarse component This is the second core component of the GreenView application used for monitoring the temperature over European geographical regions It is very similar with the Coarse to fine component described above For details regarding the significance and importance of the interface component
6. interval selection Processing options Processing options Process name Process name Process description Process description Coarse to fine process description Start processing Figure 9 Process name and description Another important component for the Coarse to fine method is the interactive map of the entire Globe Because the Gree View application is used only for European geographical regions the map is limited in size at the European continent Because is an interactive map drag and select action could be used The general view of the map is presented in Fig 10 Satellite Hybrid Figure 10 Map component The most important interactive techniques available are a The red rectangle on the map represents the geographical area from the HDF file selected in the corresponding combo box The purple rectangle represents the geographical area from the temperature file When the user selects another HDF or temperature file the two rectangles modify according to the areas contained in the selected files b Map region selection is available only if the select subarea from the HDF file option from the second menu layer is active The selection of the geographical region 1s made with the left mouse button For this the user clicks once to set the starting position of the selection and keeps the left button down and moves the mouse When it wants to end the selection just release the left mouse button c On every mouse cli
7. long run period of time Because a large data volume is used in every processing step GreenView works on Grid infrastructure Grid infrastructure is a very powerful community at Global level formed by Virtual Organizations VO Each VO has a random number of work stations and a huge resource volume that could be accessed only by authorized members The identity validation is based on certificates emitted by a certain Certificate Authority CA Every execution is done on the stations of the Grid called nodes where the job distribution is realized automatically by different middleware platforms 1 2 Existing versions of the application Our team has released the 3 version of Green View application This version reveals new approaches both at the interface level and at backdoor functionality Some of the most important changes from the previous versions are a Easy to use interface for the clients b New functionality for user authenticity c Redesigning at interface and server level Coarse to fine component d Introducing a new search mechanism for all the components for the processes launched by the logged in user and the possibility to filter the search results e Individual development of GreenLand regarding Green View f The possibility for the user to change the account setting g Update the user manual for a better understanding of the application usage by the clients There is a description catalog for this a
8. parameter for the Calibration component The user can specify this value in the no of model simulation text input The process name and process description have the same meaning as in the previous two components If both the name and the description attributes have been set by the user the process execution could begin 5 3 Start a new processing on the Grid infrastructure In this scenario we use the default input parameter files and the only input the changes is the simulation number and the name and description of the process a Step 1 input file selection Initial processing files sample_normal INTERVALS Whew Restrictions_forini_mathe Yew sample _spinup_INTER VALS ini View Restrictions _forepcomathe Wiew sample EPC_INTERVALS dat Wiew Figure 21 Input file selection b Step 2 specify the model simulation number No of model simulation ijdd Figure 22 Specify the simulation number c Step 3 naming the process Process name Test Process description Calibration scenario Figure 22 Naming the process 6 Process monitor component This is the component used for displaying the status of the current executing process and also the status of already end processes By status we mean the inputs used for processing and some information about the results process description start and end time job status a download button and for the Coarse to fine and Fine to coarse a view result
9. position and size These changes are caused by the information inside the selected satellite image from the combo box The user has the possibility to upload its own HDF or temperature satellite image by using the upload NC data file and upload HDF resolution file Once clicked these buttons allows the file selection from a dialog box Fig 6 It is worth to mention that only files with hdf or nc extension could be selected F Select file to upload by localhost Look in C FTC C build 4 C dist My Recent nbproject Documents E src i temp test Desktop S MOD1542 A2003001 h19v04 005 2007263165529 hdf My Documents My Computer gt My Network File name MOD S42 42003001 419v04 005 200 265316 Places Files of type HDF Satelite image file Cancel Figure 6 Satellite image selection for upload After hitting the Open button the selected files appears in the interface with an upload option on the right side This means that the selected file has not been uploaded yet and to do so the user must click the upload button Fig 7 If the file displayed in the interface is not the one the user wants to upload it could be changed by using once more the upload NC data file or upload HDF resolution file button t2m CRLUICTP refine upload MODLSAZ AZOOSOOLALSVO4 005 100 Figure 7 Satellite image upload progress Fig 7 shows that the temperature file is in a waiting mode for the user to st
10. EE ey as E a Add user Cancel Figure 3 Create a new user account If one of the users has forgotten its authentication data the required information could be found by using forgot your password option Fig 4 It is enough to supply only the username and the email data field in order to receive an email at the given address containing the password and other important user information B Log in form Username Password Hew User amp Forgot your password w Email jown smithy ahoo com orname Get password Cancel Figure 4 Forgot your password option At every one of the three main operations login creating account forgot your password form completion could appear some error messages due to some misspelling errors skip to complete some required fields or try to provide an already existing username Only one component is enabled at a certain moment meaning that when creating a new user account the main login window and forgot your password options are not enabled To logout of the GreenView application the user must click the username that appears in the right top side of the application window 3 Coarse to fine component GreenView application has three main components based on satellite images coarse to fine fine to coarse used for monitoring the temperature over SEE and satellite image calibration used for monitoring the growth and vegetation distribution over some specific geographical areas
11. EF data are NetCDF Chosing the appropriate meteorological data needs further discussions considering all circumstances data availability and users needs These data except for local measurements cannot be redistributed 2 User Login The authenticity of the user can be validated by using the login component Fig 1 For this Operation a username and a password should be provided by the user If the information contained in the input textboxes don t match the user identity some error message is displayed Fig 2 If the cancel button is clicked then the username and the password fields are set to null ME Loz inform Warning Username testyser B Wrong username or password Hew User amp Forgot your password w Figure 1 Login component Figure 2 Error message example If a user wants to create a new account in the GreenView database then the new user link should be clicked At this action a form is expanding below the main login window form that contains some personal information name of the client the login username an email address a password and a short description Fig 3 It 1s worth to mention that every user has a unique username that differentiate it from others When creating a new account the main login window is disabled for security reasons Be Losin form Username Password Hew User a Forgot your password Name John Smith Usemame Smith Email john smith yahoo com Password M
12. Green View A Grid based application for satellite image processing Acknowledgments This research is supported by SEE GRID SCI SEE GRID elnfrastructure for regional eScience project funded by the European Commission through the contract nr RI 211338 Climate change data have been retrieved from the PRUDENCE data archive funded by the EU through contract EVK2 CT2001 00132 MODIS data have been produced and distributed by NASA through the EOS Data Gateway system Biome BGC version 4 1 1 was provided by the Numerical Terradynamic Simulation Group NTSG at the University of Montana NTSG assumes no responsibility for the proper use of Biome BGC by others Partners engaged in the GreenView research project 1 Technical University of Cluj Napoca UTCN 2 National Center for Information Technology NCIT Bucharest 3 West University of Timisoara UVT 4 National Research Institute in Informatics ICI Bucharest 5 E tv s Lor nd University ELU from Budapest Hungary 6 Research and Educational Networking Association of Moldova RENAM Contents l Introduction 1 1 General overview 1 2 Existing versions of the application 1 3 Project requirements 1 4 Specific problems User Login Coarse to fine component 3 1 Method presentation 3 2 Input and output dataset 3 3 Start a new processing on the Grid infrastructure Fine to coarse component 4 1 Method presentation 4 2 Input and output dataset 4 3 St
13. TAN y URKMENISTAN ga N N er A AFGHANISTANS y _ Processing options North A tantie Oem MOROCCO d IRAN 9 2010 Yahoo InegKivtandata Oxi NavTER Figure 5 Interface of the Coarse to fine component There are two main interface components an accordion menu and an interactive map The inputs are chosen from the menu The map plays the role of input data selection and the role of visual representation of the changes that appears in the menu items The first menu layer Upload file allows the selection of the two input satellite images HDF and temperature or NC image Every user has two default lists one for each satellite image represented by the two combo boxes with the red and purple contour The lists structure is the following A default satellite images All the public satellite images uploaded by all the users All the satellite images uploaded by the current user At the right side of the lists there are two buttons a download button Lal and a delete button x The download button is used for downloading the selected HDF or temperature image The delete button is active only for current user uploaded satellite images meaning that the default and the public files uploaded by other users could not be deleted by the current user At every change action that takes place in one of the two combo boxes the map rectangles marked with red for HDF file and purple for temperature file also change their
14. al variable CO2 filename SITE keyword start of site physical constants block 00i 2 m effective soil depth corrected for rack fraction 20 40 3 sand percentage by volume in rock free soil 40 60 silt percentage by volume in rack free sail 10 30 3 clay percentage by volume in rack free soil 248 0 m site elevation 46 95 degrees site latitude for 5 Hem O 2 DIMM site shortwave albedo 0 0001 0 01 kahfm2 yr wettdry atmospheric deposition of 0 000 O 001 kgm symbiotictasymbiotic fixation of 4 RAMP MDEP keyword do not remove oO flag do a ramped N depositian run G no Ll yes 2001 int reference year for industrial N deposition o 0001 hgh myr industrial N deposition value nitrogen thueNi7 o0_ 2001 txt file annual variable Ndep filename EP _FILE keyword do not remove epofcSgqrass S2m_calibrated epe file c3 grass ecophysiological constar We STATE keyword start of water state variable initialization block 0 0 kgfm2 water stored in snowpack 0 5 DIM initial soil water as a proportion of saturation Figure 20 Content of the spmup parameters default file The calibration method is based on random value generation for the vegetation parameters values that must be inside the parameter s interval In order to obtain a better calibration we must simulate the BIOME BGC model as many times as possible at least 1000 Taken this into account the simulation number is another input
15. alue and it s content must be different from the space character The information has less than four characters The field accepts only integer values for Myproxy port and Myproxy lifetime fields only numerical values are accepted 8 Conclusions Green View is a useful Grid application for monitoring the vegetation growth and distribution over certain geographical areas Another approach is regarding the temperature distribution over Central Eastern Europe regions where non linear interpolation algorithm was used for output temperature map generation The spatial limitation of the GreenView application is due to the input datasets By collecting new HDF and NC satellite images the GreeView s functionality could be easily extended to other geographical areas It is worth to mention that the interpolation algorithms were chosen on a compromise basis between precision and implementation complexity Another interesting thing regarding this application is to use other interpolation techniques and to compare the obtaining results e g linear bicubic polynomial interpolation algorithms
16. apters The sixth chapter Process monitor component shows how someone can analyze the previous launch process executions by using different search options and apply different filter on the results of the search There are several possibilities for process execution All these are presented in the seventh chapter User options that also contains information on how to modify the user settings The last chapter presents Green View related conclusions and other applications that could be integrated in Green View 1 1 General overview Green View is a Grid based environmental application that is using satellite images taken for specific geographical locations over the entire Globe These satellite images contain lots of information organized in bands like Landsat or levels MODIS MERIS Thunderbird etc In order to correct the satellite measurement errors some ground collect data are used also GreenView is a client server application The server side relies on Java technology and includes classes methods and web services The client side relies on the Flex technology for creating the interface components and to associate them with different functionalities The main goal of Green View is to be used as an application for monitoring temperatures and vegetation growth over worldwide geographical areas These monitoring values represent a start point for domain field specialists for predicting temperature and vegetation distribution in a
17. art a new processing on the Grid infrastructure Calibration component 5 1 Method presentation 5 2 Input and output dataset 5 3 Start a new processing on the Grid infrastructure Process monitor component User options 7 1 How to modify the current user settings 7 2 How to use certificates for the process execution 7 3 How to configure my proxy settings for process execution Conclusions and future work 1 Introduction This paper is structured in eight chapters and could be used for a better understanding and a correct usage of the application just like a user manual There is also a pdf version of this manual that could be downloaded by the users The first chapter Introduction provides a general overview of the GreenView application and the characteristics of the applicability domain Also this section covers the main requirements based on user and specialist s feedback The second chapter User login presents the login steps into GreenView application and some other issues like creating a new account or what to do when you forgot your password The core of the application is represented by functionalities presented in the next three chapters Coarse to fine component Fine to coarse component Calibration component The meaning of the input and output dataset the way to choose these sets some user scenarios containing the required steps for a new processing are just a few example of what can be found in these three ch
18. art the upload first file from Fig 7 Every upload action has a progress component that shows the upload percentage of the file second file from Fig 7 Attached to each upload button is a combo box that contains the access type for the current selected file The possible types are the default is private access File accessible for current user private access once the file is uploaded to the server it will appear only in the satellite images list of the user that make the upload File accessible for all users public access once the file is uploaded to the server it will appear in the satellite images list for all the users In other words every user could use it in a Grid processing This kind of file could be deleted only by the user that uploaded it When a new upload action begins the browse for file buttons are disabled and for that file the user has the possibility to cancel the upload by using cancel button The second menu layer Select geographical area allows the user to specify the fine resolution area from the Coarse to fine component It is worth to mention that only areas inside the HDF map region marked with red could be selected There are two possible solutions in choosing the geographical area Apply interpolation on the entire HDF region meaning that for a Grid processing the entire geographical area specify in the HDF file is used On the map this is highlight by filling that region with a grey filte
19. button The general overview of the Process monitor component is presented in Fig 23 Coarse to fine Gpp computing Processing status User options About Green View 04 03 2010 4 04 03 2010 4 Search Process name Description Cancel Figure 23 Process monitor component This component is personalized for each user meaning that only the processes created by the current user are return by the search actions Fig 23 shows that the current login username is testuser There are five search options for the user that will be presented in this paragraph a Search process by name Is the first search option that allows the user to focus its search on the name of the process All processes that contain that name will be displayed in the table below Fig 24 shows the search result for test process name 04 03 2010 3 04 03 2010 af Search Process name Description test131 test131 test test test test test test 1 test test UPB 3 test test UPB 4 Figure 24 Search result for test b Search process by words in description This search action is looking through the description of the process and the results are placed in the same table as in Fig 24 c Search process by status Every process has a status at a given moment of execution e g submitted running done This option allows the user to filter the current user process list and to display only those processes that have the same status d
20. ck on the map the text inputs for A and B from the second menu layer change their values according to the current geographical coordinates of the mouse d Using the drag mouse event the map moves according to the mouse position but it cannot exceed the boundaries of the European continental platform e Zooming option is another important feature of the map It can be done by using the zoom in L and zoom out a buttons A 17 zoom level is accepted meaning that in some geographical areas the map scale is 1 1875Km on zoom out and 1 50m on zoom in f Map resizing in useful sometimes when we are dealing with very small area selection options For placing the map on the entire application window the full screen button could be used When we are in a full screen mode the button name will change into normal mode that allows us to return to the default map position and size g There are different views of the map specify through the Map Satellite and Hybrid buttons situated on the upper right side of the map 3 3 Start a new processing on the Grid infrastructure This section presents a scenario of the Coarse to fine input data selection in order to execute a new process on the Grid infrastructure a Step 1 select the HDF and temperature input files MODTEST hdf upload Step 1 1 MODTEST hdf 100 Step 1 2 Output HOF resolution file ropresrnae Stew Figure 11 HDF and temperature file selection b Step 2 select
21. d action by using the cancel button Browse for user certificate certificate usercemt pem upload Browse for user key kep userkey pem 100 Figure 30 Certificate upload For this option all the fields must be completed and the user must agree with the conditions impose by the Green View development team meaning that the I agree the terms box must be selected An example for the woms proxy field 1S https wms ipp acad bg 7443 glite_wms_wmproxy_server 7 3 How to configure my proxy settings for process execution Another users role for the process execution is by owning a valid proxy generated from the certificates This means that the user has to upload its certificates on a My Proxy server and to generate its own proxy Then in the interface Fig 31 the user has to complete the fields with the correct information based on the proxy generation Specify the certificate from MyProxy server WMS My Proxy server My Proxy port Optional My Proxy usemame Cancel My Proxy passphrase My Proxy credential name My Proxy lifetime hours Virtual Organization em enw see grid scitfenv see grid scieusRo App GreenView Role developer Figure 31 My proxy form All the fields are required except the MyProxy port Before updating the user account the information is validated at interface level The possible error messages that could appear are The field is empty all the field must have a non null v
22. escription Fig 18 5 Calibration component This is the last main component of the GreenView application hierarchically speaking As the previous two components this one is also based on satellite images The general overview of is presented in Fig 19 Coarse to fine Fine to coarse Processing status User options About Green View testuser Logout default files Upload ini files Upload restriction files No normal file selected No file selected No spinup file selected No file selected Upload epc file Upload measured data file No epc file selected No file selected Initial processing files sample_normal_INTERVALS View Restrictions_for_ini_mathe View sample_spinup_INTERVALS ini View Restrictions_for_epc_mathe View sample_EPC_INTERVALS dat View Processing and monitoring Process name No of model simulation Process description Figure 19 Calibration component 5 1 Method presentation Calibration component has a different approach that the first two It is based on satellite measurements but also on ground measurements for the same list of parameters The insight of the calibration notion presumes some sort of comparisons between some measured values satellite obtained values and given values ground based values The calibration method applies on a list of vegetation parameters Every parameter has an interval of possible values In order to filter the results some mathematical relations co
23. f pilot dataset The GreenView application considers the following types of input data a MODIS MODerate Resolution Imaging Sounder related products Every MODIS image is organized in levels and one level contains data for a specific parameter Land cover contains values for different parameters used for ground cover recognition FPAR Fraction of Photoshyntetically Active Radiation the fraction of the incoming solar radiation that is absorbed by the photosynthetic organisms NDVI Normalized Difference Vegetation Index simple numerical indicator that can be used to analyze remote sensing measurements and assess whether the target being observed contains live green vegetation or not All of these data are originally in HDF http hdf ncsa uiuc edu HDF5 format Optionally it can be converted to simple binary format if needed These data can be ordered from NASA https wist echo nasa gov api so they can be multiplied b OMI Ozone Monitoring Instrument data Atmospheric pollutants O3 SO2 NO2 All of these data are originally in HDF http hdf ncsa uiuc edu HDF5 format Optionally it can be converted to simple binary format if needed These data can be ordered from NASA so they can be multiplied c Meteorological data There are several possible sources of meteorological data local measurements GMAO and ECMWF reanalysis Local measurements are in ASCII with a specific file format GMAO data are binary and ECMW
24. ication and the user accesses by Internet the computation resources and environmental data that are provided by the Grid infrastructure For the satellite image processing ESIP platform will be used The gProcess platform is going to be used for managing the communication between Grid infrastructure and Green View c User requirements The main beneficiaries of this VO are Government Organizations Environment Agencies Hydrological Institutes and Research Groups involved in environment supervision and behavior prediction of natural phenomena especially in vegetation related studies Simple and easy to use by all users specialists or non specialists from different field domains 1 4 Specific problems One of the most important problems that appear regards the large processing volume of data contained in the satellite images For a single machine obtaining the results in a reasonable time is almost impossible So our attention focused on the Grid infrastructure that is designed to deal with these kinds of applications Another problem that might appear regards the parallelization and implementation techniques For example a certain algorithm could be implemented as a simple procedure or as a Grid or web service A better parallelization means a better execution time on the Grid nodes Data acquisition is another important issue Testing is an essential part of every application development strategy that involves a large volume o
25. n combination with the BIOME BGC simulation results are used to correct the satellite measurements The meaning of the five default input files is the following sample_normal_INTERVALS ini a list of normal vegetation parameters and an interval of possible values for each one of the parameters sample_spinup_INTERVALS ini a list of spinup vegetation parameters and an interval of possible values for each one of the parameters sample_epc_INTERVALS dat a list of epc vegetation parameters and a interval of possible values for each one of them Restrictions_for_ini_mathematical txt relations between normal and _ spinup parameters that must be taken into account in the process execution Restrictions_for_epc_mathematical txt relations between epc parameters that must be taken into account in the process execution All the files have a view button on the right side and by clicking this button the content of the file is displayed in the text area Fig 20 It is worth to mention that for default files the user can only view the file content and cannot modify the file 0 0 deg ofset for Tmas a 0 0 deg offset for Tmin a 1 DIMM multiplier for Prep 1 CIM multiplier for WPO 1 0 DIM multiplier for shortwave radiation CO CONTROL keyword do not remove oO flag O constant L vary with file 2 constant file for Ndep 380 000 ppm constant atmospheric CO concentration CO2fthueco 1760 2001 txt file annu
26. om the database for the current user If no certificate was uploaded then these fields will be set to null Specify what certificate to use for Grid execution Browse for user certificate certificate Browse for user key key User keypass Cancel Woms proxy Virtual Organization eR env see grid scitfenv see grid sci eusRO App GreenviewRole deyveloper I accept the terms Please read carefully the conditions of using the Grid certificates In order to use the certificate settings for executing new processes over the Grid nodes you must hold a valid certificate sign by a competent Certificate Authority The issues regarding the certificate settings are the following 1 You must provide us both usercert pem and userkey pem files Figure 29 Certificate settings form Only valid certificates could be used with this option This certificate is formed by two pem file usercert pem and userkey pem that are similar to a public and private key Both the pem files must be uploaded to the GreenView server and once uploaded they are not made public for other users By clicking the Browse for user certificate and Browse for user key buttons we accomplish the upload action The selected pem file is display under the button near the certificate and key labels Fig 30 On the right of the file name is an upload button that can be used for uploading the certificate to the server In every moment the user can cancel the uploa
27. on could be selected To start a new map selection just make a click keep your left button down and move the mouse When you want to end the selection just release the left mouse button At click and mouse movement even if the select area by mouse is active the A and B are set to the corresponding map coordinates The third menu layer time interval selection gives the user the possibility to specify the last Coarse to fine input that is the time interval used for processing This time interval is expressed as month s interval The months and the years are stored in combo boxes and in this way the user can select much easier the time interval for the Grid processing The combo box values change every time when the user selects another temperature file In other words the minimum and maximum time interval values are stored inside the temperature satellite images There are two possibilities for time selection interval The first one is to select a month interval followed by a year interval selection Another option is to select only a month interval for the same year Fig 8 An output result is generated for every month in the interval Upload file Upload file Select geographical area Select geographical area Time interval selection Time interval selection Interval selection _ Specific month selection Interval selection e Specific month selection Year Month Period start 1901 January z eee danua bd d Period end 1961
28. ponent and it makes no sense to repeat these steps The metadata from the HDF file represents the third input of this component There is a single metadata structure that has several attributes e g Fpar Lai Ndvi etc stored in a combo box From this combo box the user can select one attribute in the process execution workflow Giving a name and a description to the execution process is another important issue All the aspects related to this case have been presented for the Coarse to fine method 4 3 Start a new processing on the Grid infrastructure a Step 1 HDF and temperature file selection In this scenario we are not uploading new satellite images but we are using already existing ones from the two related combo boxes Input HDF resolution file MOD17 hdf x al a Output HS data file t m CRU 1 nc mx Figure 16 HDF and temperature file selection b Step 2 Metadata attribute selection Fig 17 presents the metadata structure for the MOD17 hdf file From this list we select the Fpar_1km attribute that will be used for further processing Select HOF metadata for processing Process name Test Fpar_ikm T Process description Lai_ikm Fine to coarse scenariol FoarlLai Geo FparExtra Ge FparstdDey ikm Start processing Figure 17 Metadata selection Figure 18 Namine the process c Step 3 Naming the process For this process we choose a Test name and Fine to coarse scenario as a d
29. pplication on the wiki server that presents the general overview the main goals and the basic approaches for GreenView The web addresses for the Green View versions are http wiki1 egee see org index php Green View wiki page for Green View http c5 mediogrid utcluy ro 433 l interpolation2 1 Oa version http c5 mediogrid utcluy ro 433 l interpolation3 1 3 version 1 3 Project requirements The project requirements could be classify in three main categories a Functional requirements In case of vegetation parameters obtained from satellite measurements the application should be able to produce rescaled fields of given vegetation parameters on a arbitrarily chosen regular grid over CEE region This application will provide vegetation related model parameters optimized to a Hungarian measuring site for further calculations As future work a geographical region extension is taken into account These calculations will hopefully produce more accurate estimates on vegetation productivity over a wider region Fields of atmospheric pollutants such as tropospheric ozone sulfur dioxide nitrous oxides are also produced from satellite measurements This application can be interesting for both the scientific and social community GreenView must have the ability to compare and verify satellite field with ground based measurements in those points where those are available b Non functional requirements GreenView is a web appl
30. r Select subarea from the HDF region this option give two possibilities in geographical area selection a The first one is to enter by hand the coordinates for this area in the text input fields marked with A and B For area selection the update selection button must be clicked One important thing to notice is that when the mouse cursor 1s moved over the map the geographical coordinates at the current position are placed in these text input fields but they change at every mouse motion To set the content for A value the user must click on a map point and to set the B value the user must make a second click Now we have set the A and B coordinates and we are ready to make a new selection on the map If the user wants to change A s value then it must make a 3 click and so on The text input fields for geographical coordinates have a minimum and a maximum value set to the lower right and upper left corner of the HDF map area marked with red contour If the user enters a value outside these limits then the text input field automatically corrects it to the minimum or maximum value if the entered value is closer to the minimum one the set it to minimum else set it to the maximum value b Another way to select the fine geographical area is to use the mouse movement and the left click button This option is enabled if select area by mouse radio button is active As in the previous option only geographical areas inside the HDF regi
31. s see the section 4 2 Input and output dataset The general view of the Fine to coarse component is presented in Fig 15 Coarse to fine Gpp computing Processing status User options About Green View testuser Logout Upload HDF resolution file file accessible for current user vw Process name Upload NC data file file accessible for current user vw Process description Input HDF resolution file MODTEST hdf gt Bg Output NC data file t2m CRU 1 nc X Bg Select HDF metadata for processing Fpar_ikm v Figure 15 Fine to coarse component 4 1 Method presentation It is based on an arithmetic mean interpolation technique In order to determine the values for the interpolated pixels this method takes into account the values of the pixels from a virtual rectangle that is a part of the entire geographical area As the previous component Fine to coarse method is based on two satellite images HDF fine resolution image and temperature file coarse resolution image The main goal of this component is to generate a coarse resolution image available in different formats JPG ASCII NC etc given a fine resolution image as input 4 2 Input and output dataset This method has three inputs HDF satellite image temperature satellite image and a processing metadata that could be found in the temperature file The satellite image selection is similar to the selection described for the Coarse to fine com
32. t settings For a user that doesn t have a valid certificate or a valid My Proxy the only available status is the Guest one Every text input in the Fig 26 must be at least 4 characters long The save button becomes active when the user makes at least one change on the default settings The example is Fig 27 in not a valid one because of the following reasons The name has only three characters The email doesn t contain a symbol The password field is empty Modify user settings Hame Use Password E il os Save WEer com Descnption Cancel developer CE Optional emi ce ngcc acad bg Select the process execution mode Current status Guest Use guest settings F Figure 27 An bad example of the account settings change For a user that has a certificate on the GreenView server and on a MyProxy server the content of the Select the process execution mode combo box is presented in Fig 28 Select the process execution mode Current status Certificate use Use certificate settings Use guest settings Use my proxy settings Figure 28 Possible role of the user 7 2 How to use certificates for the process execution This option allows the user to change the process execution style and to obtain a new execution status certificate owner The general overview of this option is presented in Fig 29 All the fields from this figure are auto completed with default values taken fr
33. uld be attached to the calibration component These relations have mathematical operator and operands and the user has the possibility to modify of add extra relation to an already defined set The calibration method is based on the BIOME BGC BioGeochemical Cycles model The main goal of this component is to correct the errors that appear in the satellite measurement based on ground made measurements and to monitor the vegetation growth and distribution over certain geographical areas 5 2 Input and output dataset There are five inputs for this component three files that contain the interval values for the vegetation parameters and two files for specifying the mathematical relationship between these parameters There are two possibilities to input the five files mentioned above The first one give the user the freedom in choosing its own files on upload them on the server The upload action is similar to the one presented for the previous two components This option is active only if the upload files radio button is selected Because of the lack of pilot data this option remains disabled The second possibility is to use some default input files and correspond to the state of the default files radio button There are three types of parameters spinup used for initializing the BIOME BGC model normal used as inputs in the BIOME BGC model The normal and spinup parameter list is identical only the interval differs epc i
34. wer table contains the execution results In this case the process with the ID 830 has finished its execution but there are cases when we are dealing with submitted running or cancelled processes Processing ID 830 Normal file sample normal INTERVALS ini Spinup file sarmiple_spinup INTERVALS ini Ini restriction file Restrictions for_ini_mathematichal txt Epc restriction file Restrictions for_epe mathematichal txt Epc file sample _EPC_INTERVALS dat Refresh time 4 March 2010 14 20 20 fall nodes completed gt refresh stopped Change refresh time 50 seconds 7 Current process status information description Node name Start server time End server time Status Options el ee ee ee E A Figure 25 Monitor the process status The Current process status information table contains information about the jobs of the process like name description start execution time end execution time status and an option attribute This option attribute contains a download button for all the three main components and a view button only for Coarse to fine and Fine to coarse component Another important aspect is that the user can stop the execution of any of the processes that he submitted by clicking the stop button in the Cancel column of the search result table 7 User options The user has the possibility to change some of the account settings or to change the process execution mode There are three types of users in this
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