User manual
Contents
1. SOLWEIG A climate design tool User manual for version 2015a Last update 17 June 2015 Urban Climate Group Department of Earth Sciences University of Gothenburg Sweden Table of contents CHANGES FROM PREVIOUS VERSIONS ococoocccococonoconoconocnnonononnnonnnonnnnnnnnnnon nono necn neon nc on nono nonnnonn cnn nonnnnnnnnecos 3 MIGRATION FROM 32 BIT TO 64 BIT COMPUTER ENVIRONMENTS oooococococcconccnonononnncnncnanonanonanonnn ns 4 SYSTEM REQUIREMENTS cocos capessets sto Siva secen Ao Eea ET Tr atril 4 OTHER APPLICATIONS NEEDED BEFORE INSTALLING THE SOFTWARE ooococncccocccnnconoconcnanonanocnnons 4 INSTALLING THE INTERFACE cocina lios 4 THE GRAPHICAL USER FRIENDLY INTERFACE FOR SOLWEIG scccsssssssssssosssccscsssssensseoes 7 STARTING THE INTERFACE cc 086 5 8 dd amie el a A dacs 7 MAN ERAME tte e AR aase eee 7 STEP LOAD DS Meca ii 8 STEP 2 SPECIFY OUTRO Tio dd dida litio 13 STEP 3 4 EOAD CREATE S MF it 13 STEP 4 LOAD METEOROLOGICAL DATA cocococccccoconnnononnnonnnnnnncnnononncnnnnnnnnnnnnnrnnnnnnnnnnnrnnnonnn nr nano nnnnnnnnnno 15 STEPS EXECUTE ds 16 SET MODEL PARAMETERS cti e ad dana 17 OPTIONAL SETTINOS e 17 SEC POINE OF INTO Esad A is 17 CALCULATE DAILY SHADING 00 aeea ea E e aae e er te eaae aii anda 19 ACRONYMS AND ABBREVIATIONS e ssessoesoessessossoossessoesoossoesoesoossoesoesoossossoesoossosssessossoosseesoese 20 Introduction SOLWEIG is a computer software model which can be used to es2. The time stamp is now fixed i e 1400 in an hourly dataset represent the hour before 2013a A new GUI is introduced as well as options to load gridded vegetation DSMs 2 3 A new scheme for reflection concerning the shortwave fluxes is included taking into account sunlit and shaded walls 2 2 Some major and minor bugs have been fixed such as A major bug regarding the scale of trees and bushes is resolved 2 1 Some major and minor bugs have been fixed such as Small changes in the equations for shortwave radiation The reflected part is now weighted using a fraction of shadow component instead of sun altitude angles An error in outgoing shortwave radiation equation have been fixed The generation of bushes in the vegetation DEM process is improved 2 0 A new vegetation scheme is now included The interface also has a wizard for generating vegetation data to be included in the calculations The new vegetation scheme is again slowing down the calculation but the computation time is still acceptable 1 1 Longwave and shortwave radiation fluxes from the four cardinal points is now separated based on anisotropical Sky View Factor SVF images Ground View Factors is introduced which is a parameter that is estimated based on what an instrument measuring Lup actually is seeing based on its height above ground and shadow patterns In order to make accurate estimations of GVF locations of building walls need t
3. building heights but also of only building structures with ground elevation equals to zero A raster DSM could be created in almost any GIS software s A brief guide on how to create a DSM in ArcGIS can be found at the Urban Climate Group webpage By default the Interface will allow all types of file extensions in where a building DEM can be stored In order for the DEM to be successfully loaded it has to follow the ERSI ASCII Grid format including the order of the headers ncols nrows xlicorner or xllcenter yllcorner or yllcenter 4 cellsize H NODATA_value a float number greater than zero number of columns of the matrix a float number greater than zero number of rows of the matrix a positive or negative decimal number geographic x coordinate of the lower corner of the matrix Can be either xllcorner or xllcenter a positive or negative decimal number geographic y coordinate of the left side of the matrix Must be yllcorner when using xllcorner and yllcenter when using xllcenter a positive decimal number from 0 size of 1 pixel a positive or negative decimal number the value of no data The matrix of positive and or negative decimal numbers representing the DEM Each row is separated by a new line and each column by a blank character The size is the one specified in the ncols and nrows headers Note 1 or more blank characters in
4. tree will always have a value of 0 0 for this column x X coordinate from the building DSM where the tree is located a round number from 1 to the maximum x value of the building DSM y y coordinate from the building DSM where the tree is located a round number from 1 to the maximum y value of the building DSM b an area that corresponds with a marked building from the building DSM This value is automatically assigned by the application the first time the user marks the buildings Therefore if new trees are added manually this value has to be 0 0 decimal format On the contrary if there are marked buildings but not trees there will be entries with values 0 0 in all the columns excepting in the build one An example of the above vegetation DSM format is shown below ID ttype dia height trunk x y build 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16873 0 2 0 1 0 10 0 30 0 5 0 128 0 133 0 17307 0 3 0 3 0 5 0 5 0 0 0 182 0 58 0 10155 0 4 0 2 0 15 0 20 0 5 0 133 0 40 0 23081 0 5 0 1 0 5 0 6 0 5 0 144 0 234 0 19425 0 Important every time a new vegetation file is saved or loaded within the interface new vegetation SVFs must be created or loaded as well see below As shown in Figure 8 it is also possible to load and edit an already created vegetation DSM Recently 3D vegetation data derived from e g LIDAR technology has become available Therefore as from version 2013a it is also possible to load already
5. Window Help a OGaAsS RATIO a oa ao 100 101 xi pe File Edit View Insert Tools Desktop Window Help 2 80 OcGdas r 48798 X lt X 38 058 2 0 70 to O oe A E E E A 60 50 40 30 veg shadow eee shadow eeee88 Dd EEE E i suftise sunget L 1 L 1 L L L L 1 L L L L L L 1 1 L L L 1 1 L 012 34 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Hour 100 150 200 250 Figure 16 Example of Daily Shading results Tips and hints In this section a few recommendations are presented which will help you to obtain the best result using the SOLWEIG model 19 The model makes the most accurate estimations of the radiative fluxes if the locations of the building are known When the vegetation scheme is used the buildings is identified However using the model without the vegetation scheme results in an automated identification of the building footprints is used which introduce error due to the fact that courtyard also will be identified as buildings To resolve this create an empty vegetation DSM and then click in Do not use vegetation This makes the model use the identified buildings instead of using the automated building generation algorithm Look in the test files folder for examples on how the input data should look like There you will find DSMs meteorological data files etc Upcoming versions The SOLWEIG model is in a development pr
6. ate mean radiant temperature in field studies and models ICUC9 9th International Conference on Urban Climate jointly with 12th Symposium on the Urban Environment Lindberg F Thorsson S Holmer B 2008 SOLWEIG 1 0 Modelling spatial variations of 3D radiant fluxes and mean radiant temperature in complex urban settings International Journal of Biometeorology 2008 52 697 713 Lindberg F Grimmond CSB 2011 The influence of vegetation and building morphology on shadow patterns and mean radiant temperature in urban areas model development and evaluation Theoretical and Applied Climatology 105 3 s 311 323 Lindberg F Onomura O Grimmond CSB 2015 The influence of land cover surface on mean radiant temperature Submitted to International Journal of Biometeorology Offerle BD CSB GRIMMOND TR Oke 2003 Parameterization of net all wave radiation for urban areas Journal of Applied Meteorology 42 1157 1173 Reindl D T Beckman WA Duffie JA 1990 Diffuse fraction correlation Solar energy 45 1 1 7 21
7. cked in the main frame This is the most time consuming part of the model execution The output of the SVF images generated is again as ESRI ASCII Grids If only a ground and building DSM is loaded vegetation SVFs is not needed This step allows loading of existing SVFs or creating them if they do not exist For the case of creating the building SVFs there are five SVFs images created for each SVF generation one default and one for each four cardinal points per DSM If vegetation data is used vegetation SVF option ten more SVF images are generated having a total amount of ten images They are all saved in the same zip file that has to be specified before creating the images 13 In Figure 12 the input data is already loaded thus by clicking on Close button bottom right the dialog will be hidden and the Interface will go back to the main frame which now will have enabled the step buttons number four of the flowchart lol xl Load Create Building and Ground SVFs Load Building SVF Create Building SVF Building SVF not availabe Load CreateVegetation SVFs Load Vegetation SVF Create Vegetation SVF Vegetation SVFs not availabe Close Figure 12 Load Create SVFs when both SVFs are loaded Figure 13 shown the main frame when both DSM and SVFs are loaded in the interface SOLWEIG Sia xi File Help SOLWEIG 2015a STEP 1 STEP 2 STEP 4 STEPS Load DSMs Specify Outpu
8. cluding tabs An example of the above building DEM format is shown below ncols 350 nrows 350 xllcorner 39250 yllcorner 27993 cellsize 1 NODATA_value 9999 0 723 0 207 0 341 0 408 0 439 0 455 0 463 0 461 0 445 0 409 0 371 0 36 0 347 0 337 0 319 0 312 0 312 0 301 0 297 0 294 0 289 0 285 0 276 0 275 0 268 0 257 0 244 0 199 0 924 0 924 0 923 0 928 0 924 0 931 0 931 0 934 0 935 0 937 0 939 After loading the corresponding data the Interface enables the other buttons in Figure 8 Since SOLWEIG version 2 0 a vegetation scheme is included Vegetation will be represented as an additional DSM consisting of trees and bushes Generation of vegetation units will be executed in a number of steps presented below First all buildings have to be identified By clicking the Create button in the Load Create vegetation DSM Optional two new figures are displayed Figure 9 Here the user can mark the buildings within the model domain Options Mark buildings Figure 9 Load DSMs step when marking the buildings 10 All edges greater than 2 meter will be marked as a building wall pixel Locations of buildings are also used even if when no vegetation DSM is used Hence it is suggested to go through the first step in the generation of a vegetation DSM process as shown below Figure 10 shows the dialog which represent a third level dialog where the vegetation DSM can be generated First one of the three standard vegetat
9. e radiation W m Required if NetRadiationChoice 1 6 ah Sensible heat flux W m7 7 qe Latent heat flux W m7 8 qs Storage heat flux W m7 15 9 af Anthrpogenic heat flux W m 10 U Wind speed m s 11 R RH Relative Humidity 12 R Tair Air temperature C 13 O pres Barometric pressure kPa 14 O rain Rainfall mm 15 R kdown Incoming shortwave radiation W m Must be gt 0 W m 16 H snow Snow mm Required if SnowUse 1 17 Idown Incoming longwave radiation W m7 18 fcld Cloud fraction tenths 19 Wuh External water use m 20 H xsmd Observed soil moisture m m or kg kg 21 lai Observed leaf area index m2 m 22 O kdiff Diffuse radiation W m 23 O kdir Direct radiation W m7 24 wdir Wind direction R Required O Optional Net required for SOLWEIG IMPORTANT The direct beam radiation Kdir used as input in the SOLWEIG model is not the direct shortwave radiation on a horizontal surface but on a surface perpendicular to the light source Hence the relationship between global radiation and the two separate components are avkdn Kdir sin h Kdiff where h is the sun altitude Since diffuse and direct components of short wave radiation is not common data it is also possible to calculate diffuse and direct shortwave radiation by ticking the box in Figure 16 Reindl et al 1990 IMPORTANT As from version 2014a the hour time stamp is the average f
10. e steps starting from the Load DSMs step and ending with the Execute one Regarding the buttons in the flowchart in the beginning there is only one which is allowed to be clicked This indicates the starting point for running the model After loading the first required files those corresponding to the step one Load DSMs step button number 2 Specify Output will be able to be used and so forth A new option on using a simple land cover scheme is included as from version 2015a The Interface will continue enabling the remaining steps buttons of the model when the corresponding and required input data is loaded on the active step STEP 1 Load DSMs When a button from the main frame is clicked a new dialog pops up with all the functionality and input data related to that step of the model In Figure 8 the Load DSMs step is shown in a new dialog DigitalSurfaceModels 5 x Ground and building DSM Load No Building DSM loaded Load Create vegetation DSM Optional Vegetation DSMs from textfile Gridded Vegetation DSMs Load ASCII grids No Vegetation DSMs loaded Close Figure 8 Load DEMs step at the beginning Figure 8 shows how the Interface specifies the action that has to be performed in order to load the input data correctly A raster DSM is essential for the SOLWEIG model to work and it could consist of both ground and
11. eorol Data calculated surface temperature relative humidity from meteorol data vapor pressure sky emissivity mean radiant flux density mean radiant temperature theoretical value of maximum incoming solar radiation clearness index for Laown Based on Crawford and Duchon 1999 Ground View Factor clearness index used for calculating T2 T differences Based on Reindl et al 1990 Shadow value Sky View Factor from ground and buildings Sky View Factor from ground buildings and vegetation Physiological Equivalent Temperature Universal Thermal Climate Index 18 Land Cover Scheme An additional grid can be loaded specifying different land cover surfaces The surfaces available is found in Lancoverclasses txt in the installation folder Here new surfaces can be added For further details see Lindberg et al 2015 Calculate Daily Shading A separate feature of the interface is found in the lower left corner of the main frame namely to generate shadow patterns on for the loaded DSMs based on geographic location and day of year Itis also possible to specify the interval between each shadow map generation The Calculate Daily Shading becomes available after DSMs are loaded and an output folder is specified No SVFs or meteorological datasets are needed Figure 16 shows an example of the result generated using the daily shading feature Precentage of sun at surface on 2013 10 x File Edit View Insert Tools Desktop
12. face to actually start is relatively long compared to its size This is because the MCR is also initialized which is a considerable larger application than the Interface itself Main frame Figure 7 shows the initial window or main frame that will be displayed every time the application is launched ioii Fie Help SOLWEIG 2015a STEP 1 STEP 2 STEP 3 STEP 4 STEPS Load DSMs gt Digital Surface Model Sky View Factor Geographical location Sweden G teborg hs Longitude decimal degree 11 57 Latitude decimal degree 57 7 Altitude masl 3 UTC hy 1 Not Loaded Created SRR E Not Loaded Personal parameters Absortption shortwave 0 70 0 95 Absortption longwave Posture Standing Daily shading Optional settings Urban parameters 17 06 2015 r et point t Albedo walls 0 20 Set date IV Show hourly images of mean radiant temperature during execution Albedo ground 0 20 2 0 Height of wind sensor for PET and UTC calculation at point of interest Emissivity walls 0 90 Time intervall 30 minutes IV Adjust for underestimation of sky emissivity accoring to Jonsson et al 2005 Emissivity ground 0 95 IV Consider standing man as cylinder instead of box r 1 land cc r gric Transmisivity vegetation 0 02 Figure 7 Main frame at the beginning As it can be seen in Figure 7 the different steps of the model are shown in the shape of buttons at the top of the interface The flowchart has fiv
13. gridded vegetation DSMs into the interface The grid should be of the same spatial resolution and extent as the ground and building DSM The dialog shown when a gridded vegetation dataset should be used is shown in Figure 11 In order to generate realistic shadow patterns from vegetation a trunk zone DSM specifying the volume between the vegetation canopy and the ground is also needed Lindberg and Grimmond 2011 This can be loaded directly is available or be generated based on a constant value or the assumption the trunk zone is proportional to the total height of the vegetation in each specific pixel 12 LoadVegetationGrids of x Canopy DSM Load Canopy DSM No Canopy DSM loaded Trunkzone DSM Load existing grid Load grid Generate as fraction from Canopy DSM Create Fraction of Canopy DSM 09 25 Generate with constant height eate Coie 45 1 No Trunkzone DSM loaded generated Figure 11 Dialog for loading gridded vegetation datasets STEP 2 Specify Output Options to save a number of different grids at different temporal resolution is included both as tiff or ASCII grids An output folder needs to be specified in order to proceed to step 3 STEP 3 Load Create SVF The Interface can also be used to obtain images of sky view factor values Figure 12 shows the dialog that is popped up when the Load Create SVFs button is cli
14. ion shapes has to be selected conifer deciduous or bush The Interface will then generate a vegetation unit based on the measures inserted diameter tree height and trunk height Finally the vegetation unit has to be located somewhere within the model domain This procedure can be repeated or a vegetation unit can also be removed CreateEditVegetation 101 xi Add a vegetation unit Vegetation type Conifer Total height m 29 Diameter m 15 Trunk height m 5 Locate m Remove a vegetation unit uto y Cancel Save Figure 10 Load DSMs step when setting the vegetation units By default the Interface will allow all types of file extensions in where a vegetation DSM can be stored In order to be successfully loaded it has to follow the following format including the order of the headers ID ttype dia height trunk x y build i t d h tr x y b Where all the columns are separated by a tab or space and 11 i tree identifier a round number from 1 to infinity t tree type a round number that can only have the three following values 1 Conifer 2 Deciduous 3 Bush d tree diameter in meters a decimal number from 0 to infinity h tree height in meters a decimal number from 0 to infinity tr tree trunk size in meters a decimal number from 0 to infinity This value cannot be equal or greater than the tree height Besides the bush
15. mpiler mcr If you are using earlier versions of SOLWEIG you should keep the corresponding MCR installed on your computer Earlier MCRs could be found at Urban Climate Group webpage Installing the Interface Download the executable installation file SOLWEIG Setup exe of the Interface from the Urban Climate Group webpage and follow the installation procedure as shown below Figure 1 6 The current installation also comes with a sub version of the SOLWEIG model called SOLWIEG1D This application can be used together with hemispherical photographs and can be used to calculate SVF Tmrt PET and UTCI as well as display sun diagrams http www gvc gu se english research climate urban climate Select Setup Language x Select the language to use during the p g installation English Welcome to the SOLWEIG 2015a Setup Wizard This will install SOLWEIG 2015a on your computer It is recommended that you close all other applications before Click Next to continue or Cancel to exit Setup Figure 2 SOLWEIG setup welcome window dr Setup SOLWEIG 2015a i Where should SOLWEIG 2015a be installed N Setup will install SOLWEIG 2015a into the following folder To continue dick Next If you would like to select a different folder dick Browse C Program Files SOLWEIG20 15a Browse At least 22 1 MB of free disk space is required Figure 3 Select destination location qe Setu
16. o be known Walls can be found automatically be the SOLWEIG model However if the User wants to have more control over what are buildings and not the User should use the marking tool included in the Create Edit Vegetation DEM A very simple approach taken from Offerle et al 2003 is used to estimate nocturnal Ldown Therefore Tmrt could also be estimated during night in version 1 1 Migration from 32 bit to 64 bit computer environments The SOLWEIG interface as from April 2012 is now running in 64 bit computer environments This is mainly because of the increased memory capabilities which make it possible to work with even larger model domains than before Some users might run into problems using the new 64 bit version Solutions of some of these issues are found in this guide Please read this manual through before contacting the Urban Climate Group with any further questions A 32 bit version can be available upon request Installation This section gives you information on how to install the SOLWEIG graphical user friendly Interface on a regular PC System requirements The Interface runs under WINDOWS NT 2000 XP Vista 7 64 bit platforms Other applications needed before installing the software There is one additional application that has to be installed on the PC before been able to run SOLWEIG gt Install the MCR MATLAB Compiler Runtime 8 2 This can be downloaded from http www mathworks se products co
17. oad meteorological data Figure 14 shows the dialog that is popped up when the Load Met data button is clicked in the main frame lx Loading options J7 Calculate direct and diffuse radiation from global radiation Meteorological data Load Meteorological data No meteorological data loaded Close Figure 14 Add meteorological data with data loaded As from version 2015a SOLWEIG adopts a new format of meteorological data This is done as SOLWEIG is planned to be incorporated in a coupled model system for climate sensitive applications Required inputs must be continuous i e gap fill any missing data Table 1 gives the required and optional additional input variables Variables marked with in the comment column are not used with the current version and can be replaced with 999 0 if the user s dataset does not include the variable If a parenthesis is added the variable is optional Make certain these are not TAB delimited files By default the Interface will allow all types of file extensions in where the meteorological data can be stored In order to be successfully loaded it has to follow the following format including the order of the columns Table 1 Meteorological input data to run SOLWEIG Model refers to the name within the model code No USE Column name Description 1 R iy Year YYYY 2 R id Day of year DOY 3 R it Hour H 4 R imin Minute M 5 qn Net all wav
18. ocess and we are constantly working on refinement and improvements of the model Our plans so far are to present these changes in one major upgrade Two major changes are planned in the upcoming versions Possibilities to calculate PET Physiological Equivalent Temperature will also be included This requires an estimate of wind speed which is currently not included in the model Furthermore a coupling with a surface energy model and a convective boundary model is in progress After this it will be possible to modify the meteorological data based on surface characteristics within the model domain Upcoming version will not be available in its current design but instead be incorporated in the larger tool package UMEP Urban Multi scale Environmental Predictor Acronyms and abbreviations ASCII American Standard Code for Information Interchange DSM Digital Surface Model MCR MATLAB Compiler Runtime SOLWEIG SOlar and LongWave Environmental Irradiance Geometry SRS Software Requirements Specification SVF Sky View Factor UTC Coordinated Universal Time 20 References Crawford TM Duchon CE 1999 An improved parameterization for estimating effective atmospheric emissivity for use in calculating daytime downwelling longwave radiation Journal of Applied Meteorology 38 474 480 Holmer B Lindberg F Thorsson S Rayner D 2015 How to transform the standing man from a box to a cylinder a modified methodology to calcul
19. p SOLWEIG 2015a Select Start Menu Folder Where should Setup place the program s shortcuts Setup will create the program s shortcuts in the following Start Menu folder To continue dick Next If you would like to select a different folder dick Browse SOLWEIG 2015a Don t create a Start Menu folder Figure 4 Select start menu folder qe Setup SOLWEIG 2015a Select Additional Tasks Which additional tasks should be performed Select the additional tasks you would like Setup to perform while installing SOLWEIG 2015a then dick Next Additional icons mb J Create a Quick Launch icon Figure 5 Create a desktop icon 11x Ready to Install Setup is now ready to begin installing SOLWEIG 2015a on your computer E Click Install to continue with the installation or dick Back if you want to review or change any settings Destination location C Program Files SOLWEIG20 15a Start Menu folder SOLWEIG 2015a Figure 6 Ready to install SOLWEIG on your computer The graphical user friendly Interface for SOLWEIG This section explains in detail all the steps that have to be taken in order to run the SOLWEIG model by using the Interface For each step of the model some screenshots will be shown along with descriptions explaining the step s functionality and data that should be used and loaded Starting the Interface The time it takes for the inter
20. rom the time step before i e hour 3 is the time between 2 and 3 am in an hourly time resolution is used As from version 24014a the time resolution is not set to one hour but could change based on the input meteorological data As from version 2015a the file ModelledYears txt is excluded and information about year is added into the meteorological file Leap years are taken into account and will be determined for each year In the current version of SOLWEIG 2015a Daylight Savings is not used and could therefore be ignored Examples of the input files is found in the test files folder STEP 5 Execute By clicking on the Execute button the SOLWEIG model will be launched 16 Set model parameters There are a number of settings that can be made in the main frame of the interface The model parameters are divided into geographical urban and personal parameters It is possible to use the default values or to specify new values Optional settings Some optional settings are also available If the option Show hourly images of Tmr during execution is selected the results will be shown There is also an option to exclude the vegetation scheme Do not use vegetation Set point of interest Figure 15 shows the window that pops up when the button Set point of interest is clicked on the main frame Set Point of Interest Figure 15 Set point of interest with point set 17 In order
21. t gt an Load Met data Execute Digital Surface Model Sky View Factor Geographical location sweden G teborg Longitude decimal degree 14 57 Latitude decimal degree 57 7 Altitude masl 3 UTC h 4 Add new location Personal parameters Absortption shortwave 0 70 Absortption longwave os Posture standing E Daily shading r Optional settings Urban parameters 17 06 2015 Set point of Interest Albedo walls F Do not use vegetation ES Mee Set date IV Show hourly images of mean radiant temperature during execution Albedo ground 0 20 2 0 Height of wind sensor for PET and UTCI calculation at point of interest Emissivity walls 0 90 Time intervall zo minutes IV Adjust for underestimation of sky emissivity accoring to Jonsson et al 2005 Emissivity ground 0 95 Y Consider standing man as cylinder instead of box Calculate Daily Shading Load land cover grid Transmisivity vegetation 0 02 T Use land cover scheme Figure 13 Load DEMs step when both DEMs are loaded 14 The location part right side of the dialog is used to locate the model domain at a geographic location on Earth By default the Interface provides a list of cities and their location which can be edited or removed Besides new locations can be added if the desired city does not appear on the list STEP 4 L
22. timate spatial variations of 3D radiation fluxes and mean radiant temperature Tmr in complex urban settings This document describes the computer software and the graphical user friendly interface GUI that has been developed for the SOLWEIG model For detailed description of the model see Lindberg et al 2008 and Lindberg amp Grimmond 2011 SOLWEIG is written in MATLAB programming language This involves a certain number of advantages for the aim of this model as matrices processing are required continuously a requirement that MATLAB covers perfectly Therefore better fast and efficient results are obtained The graphical user interface makes use of a runtime engine called the MCR MATLAB Compiler Runtime which makes it possible to run MATLAB application outside the MATLAB environment The MCR is deployed royalty free This document will help you to install and run the SOLWEIG model using the graphical user interface It also includes handy tips and recommendations which could be used in order to optimize the model Changes from previous versions Version Changes from previous version 2015a Now includes a simple land cover scheme according to Lindberg et al 2015 Option to consider man as cylinder included Holmer et al 2015 More options regarding incoming longwave radiation is added to the GUI 2014a The model is now able to run at any time interval A new format of the input met data is introduced
23. to specify a point of interest the mouse cursor has to be used to point the cursor over the shown DSM and then click on the desired area within the map For this purpose the coordinates the cursor is pointing to in real time is shown to facilitate the point s selection The height will be referring to the centre of gravitation of a standard male 1 1 m agl The point of interest is a location where more detailed information of the model can be extracted The text file generated includes the following attributes year month day hour altitude azimuth Kdirect Kdiffuse Kglobal Kdown Kup Knorth Keast Ksouth Kwest Ldown Lup Lnorth Least Lsouth Lwest Ta Tg RH Ea Esky Sstr Tmrt 10 Cl Gvf Cl_Tg Shadow SVF_b SVF_b v PET UTCI year month of year day in month hour of day altitude of the Sun in degrees azimuth of the Sun in degrees Direct beam solar radiation calculated of from meteorol data diffuse component of radiation calculated of from meteorol data global radiation from meteorological input data downward shortwave radiation outgoing shortwave radiation shortwave radiation from north shortwave radiation from east shortwave radiation from west shortwave radiation from south downward longwave radiation outgoing longwave radiation longwave radiation from north longwave radiation from east longwave radiation from west longwave radiation from west air temperature from met
Download Pdf Manuals
Related Search