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hirdls maps

First Maps of Sub-Visual Cirrus in the Upper Tropical Troposphere

6.28.06

photo : cirrus clouds

MLS sees cloud ice, but HIRDLS sees the clouds themselves, even clouds that are so thin that people cannot see them. Just as in the MLS cloud ice map we see large amounts of this cirrus in regions of significant cloud ice. However, the HIRDLS maps show us that thin cirrus is nearly everywhere we look in the tropics but thickest near convection.

Daily global measurements of the location, height and optical thickness of subvisible cirrus show seasonal movements.





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