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Overview %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%

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Presentation on theme: "Overview %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%"— Presentation transcript:

1 Overview %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%%%%%% %%%%%%%



4 opensource license, copyright 2010 % %developed by Stephane Poirier, M.Sc. Optical Physics, Remote Sensing Application Software Developer (1991-2010) % %this function is part of's ar\sp\ Microwave- derived 30-year Canada-Alaska Daily Temperature and Snowcover Databases library % %this function is part of's ar\sp\'this folder' application (lauched with ar\sp\'this file'.m)'s ar\sp\affiche_carte application is part of the'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, Poirier_Microwave-derived-daily-surface- temperature_JGR2009JD012760_R2.pdf % %This study's database can be downloaded from the author web site at: % % %this function is used to display the raw microwave raster data (NSIDC's SMMR and SSMI satellite, ref. % %usage: % 20yymmmdd % %version 0.0, 20yymmmdd, spi, initial function draft % opensource license, copyright 2010

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7 %cette fonction sert a visualiser le fichier latlon_73x144.mat %cette fonction appliquee sur le fichier latlon_73x144.mat %devrait donner le rendu figurant ci-dessous (apres la fonction) % %affiche_era() est la version francaise de la fonction era_view() function era_view(); load C:\era40\donnees-brutes\latlon_73x144.mat; %soit les indices i et j, indices de ranges et colonnes respectivement min_i = 1; %y coor min max_i = 73; %y coor max min_j = 1; %x coor min max_j = 144;%x coor max topleft = [lat(min_i,min_j);lon(min_i,min_j)]; bottomleft = [lat(max_i,min_j);lon(max_i,min_j)]; topright = [lat(min_i,max_j);lon(min_i,max_j)]; bottomright = [lat(max_i,max_j);lon(max_i,max_j)]; %polygon disp(['upper left latitude : ',num2str(topleft(1))]); disp(['upper left longitude: ',num2str(topleft(2))]); disp(['upper right latitude : ',num2str(topright(1))]); disp(['upper right longitude: ',num2str(topright(2))]); disp(['lower right latitude : ',num2str(bottomright(1))]); disp(['lower right longitude: ',num2str(bottomright(2))]); disp(['lower left latitude : ',num2str(bottomleft(1))]); disp(['lower left longitude: ',num2str(bottomleft(2))]); disp(''); disp(['upper left x: ',num2str(min_j)]); disp(['upper left y: ',num2str(min_i)]); disp(['lower right x: ',num2str(max_j)]); disp(['lower right y: ',num2str(max_i)]); disp(['grid width : ',num2str(max_j-min_j+1)]); disp(['grid height: ',num2str(max_i-min_i+1)]); end %{ %rendu pour le fichier latlon_73x144.mat (modele era40) %les fichiers brutes era40 couvrent donc le monde ET l' %extraction de la region/grille 160x240 (easegrid equal %area) au prealable est necessaire avant toute comparai %son upper left latitude : 90 upper left longitude: 0 upper right latitude : 90 upper right longitude: 357.5 lower right latitude : -90 lower right longitude: 357.5 lower left latitude : -90 lower left longitude: 0 upper left x: 1 upper left y: 1 lower right x: 144 lower right y: 73 grid width : 144 grid height: 73 %}

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