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4. %nakedsoftware.org opensource license, copyright 2010 stephane.poirier@oifii.org % %developed by Stephane Poirier, M.Sc. Optical Physics, Remote Sensing Application Software Developer (1991-2010) % %this function is part of oifii.org's ar\sp\ Microwave- derived 30-year Canada-Alaska Daily Temperature and Snowcover Databases library % %this function is part of oifii.org's ar\sp\'this folder' application (lauched with ar\sp\'this file'.m) %oifii.org's ar\sp\affiche_carte application is part of the oifii.org's ar\sp set of applications which %may also contain similar variant versions of this function with identical filename. % %A geophysical research paper about this work has been submitted in June 2009 for publication in JGR-Atmosphere %Royer, A. and Poirier S., Surface temperature spatial and temporal variations in North America from homogenized %satellite SMMR-SSM/I microwave measurements and reanalysis for 1979-2008, Journal of Geophysical Research - Atmosphere, %Submitted June 2009, http://www.oifii.org/tsatdb/Royer- Poirier_Microwave-derived-daily-surface- temperature_JGR2009JD012760_R2.pdf % %This study's database can be downloaded from the author web site at: %http://www.oifii.org/tsatdb/Royer-Poirier_Microwave-derived- daily-surface-temperature-db_1979-2008.zip % %this function is used to display the raw microwave raster data (NSIDC's SMMR and SSMI satellite, ref. nsidc.org) % %usage: % 20yymmmdd % %version 0.0, 20yymmmdd, spi, initial function draft % %nakedsoftware.org opensource license, copyright 2010 stephane.poirier@oifii.org

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7. function test160x240(); %easegrid northern hemisphere upperleft bottomright (x=1,y=1 x=721,y=721): %canada 160x240 x and y filter (1+180:160+180,1+230:240+230): %canada 160x240 upperleft bottomright (x=160+180,y=1+230 x=1+180,y=240+230): %{ x = [160+180 160+180 1+180 1+180]; %upperleft upperright bottomright bottomleft y = [1+230 240+230 240+230 1+230]; %upperleft upperright bottomright bottomleft [alon, alat]=pix2latlon(x,y); %upperleft upperright bottomright bottomleft [ax, ay]=latlon2pix(alon,alat); %upperleft upperright bottomright bottomleft %} %testing pix2latlon.m/easegrid.m and latlon2pix.m/ieasegrid.m [xx,yy]=meshgrid([1+180:160+180],[1+230:240+230]); [alon,alat]=pix2latlon(xx,yy); %upperleft upperright bottomright bottomleft [ax,ay]=latlon2pix(alon,alat); %upperleft upperright bottomright bottomleft xlswrite('test160x240-longitude.xls', rot90(alon)); xlswrite('test160x240-latitude.xls', rot90(alat)); %{ %testing function coordeasegrid.m %note spi: testing failed, use function latlon2pix.m instead [r,s] = coordeasegrid(alon,alat,'canada'); %} disp('done'); end