Task 5B Status Update August 21, 2012. Results/interpretation from Southeast Asia (separate file)
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Transcript of Task 5B Status Update August 21, 2012. Results/interpretation from Southeast Asia (separate file)
Task 5B Status Update
August 21, 2012
• Results/interpretation from Southeast Asia (separate file)
Full Resolution Image
• January shows the least amount of could cover in Liberia.
•Northern part of the country experiences average cloud fraction 30-50%
• Southern half sees 50-70% cloud cover.
• Increased cloud cover over Inner Niger Delta
• This may be due to the intersection of very dry air from the Sahel with moist air over the delta.
• Cloud amounts increase from south to North.
• This is due to northward migration of the ITCZ.
• As ITCZ continues northward, cloud cover in Liberia increases to 80-100%.
• By August, nearly the entire region experiences 90-100% cloud cover at 1030 LT.
• As the ITCZ begins to migrate southward, decreased cloud amounts are seen in the northernmost part of the region.
•Niger, Nakambi, and Bafing Rivers, Lake Volta in Ghana and a large lake in western Mali are all evident.
• Cloud cover continues to decrease N-S as ITCZ moves southward.
• Inner Niger Delta again becomes evident.
First Look: Results from South America
(Separate File)
Color Bars?
Code/ Result Delivery
• Code is currently in IDL– Uses some IDL-specific functions to interpolate 5km lats/lons
to 1km values• MODIS data is in HDF-EOS Format.
– IDL-specific routine used to read data– Format often requires special toolkits in order to read in
other languages.• Currently takes about 2.5 hours to run one 10 x 10 tile
for one month (could be cut back a little, but not much).• All output files are in binary format, figures in .png
• Cloud mask file sizes ~ 4MB each (one tile/one month)
• Daily files used to make monthly histograms: 7.5 MB each (one tile/day)
• Histogram files (one tile/one month): 40KB• Assorted listing files used to process large
amounts of data: most <5 KB.