Differences

This shows you the differences between two versions of the page.

--- aerosol_land [2010/03/08 15:08] – images are now on the wiki instead of fetched from http:// ebaudrez
+++ aerosol_land [2013/10/14 11:06] (current) – removed aipe
@@ Line 1: / Line 1: @@
-====== Land ======
-===== Meteosat-8 images =====
-March 2006 12:00 UTC, dust outbreak over the Sahara.
-The desert surface is characterized by very low emissivity at IR8.7μm, we can see it appear darker on the image:
-{{200603081200_spp_T3.png|8.7μm brightness temperature}}
-If we make the difference between 8.7μm and 10.8μm we are able to separate the clear-sky regions from the regions with aerosols:
-{{200603081200_T3_T5.png|difference image 8.7μm -- 10.8μm}}
-In order to make a reference image with the surface contribution we estimate the surface emissivity from the clear-sky observations:
-{{200603081200_emissivity_108.png|10.8μm land surface emissivity}}