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The Climate and Radiation Branch at NASA's Goddard Space Flight Center supports a key NASA mission, namely, to understand and protect our home planet. We seek a better understanding of Earth's climate on all time scales, from daily, seasonal and interannual variability through changes on geologic time scales. Our research focuses on atmospheric measurement, numerical modeling, and climate analysis. We investigate atmospheric radiation, both as a driver for climate change and as a tool for the remote sensing of Earth's atmosphere and surface. The Branch research program seeks to better understand how our planet reached its present state, and how it may respond to future drivers, both natural and anthropogenic.
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Assessing MODIS cloud retrieval aggregation biases with view angle
June 21, 2009 — The MODIS Level-2 cloud retrieval product (MOD06 and MYD06 for Terra and Aqua, respectively) provides a baseline instantaneous uncertainty (does not attempt to account for 3D radiative effects). However, the extent to which instantaneous errors produce bias errors in aggregated means is more important for many applications. Since aggregated biases are difficult to quantify directly (requires knowledge of pixel-level error sources and their correlations), the MODIS cloud retrieval team has tried a diagnostic approach to better understand geometric biases by developing code that can aggregate a variety of MODIS Level-2 cloud parameters by view angle and instrument scan side. Like the MODIS Atmosphere Team operational Level-3 code, the aggregations are on a spatial grid of 1°. We have examined global view and scan angle dependencies for a single month for liquid water and ice clouds. More on this Image
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American Geophysical Union's Yoram J. Kaufman Award
May 21, 2009 — Named after the late distinguished NASA/GSFC Atmospheric Scientist, the American Geophysical Union's Yoram J. Kaufman Award recognizes "broad influence in atmospheric science through exceptional creativity, inspiration of younger scientists, mentoring, international collaborations, and unselfish cooperation in research." In this, the first year the award is being given, it will be shared by two local scientists, our own Ralph Kahn (613.2) and Ross Salawitch, at the University of Maryland. The recipients will be recognized at the Fall AGU meeting in San Francisco.
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Nature Geoscience Article Entitled Smoke Above Clouds
March 5, 2009 — The article entitled "Smoke Above Clouds" by Lorraine A. Remer comments on work by Chand et. al. Both articles appear in the March 2009 issue of Nature Geoscience Atmospheric Science News and Views. Aerosols in the atmosphere alter the radiative balance of the Earth by reflecting or absorbing solar radiation. Spaceborne measurements of clouds and aerosols advected over the southeastern Atlantic Ocean indicate that the greater the cloud cover below the aerosols, the more likely the aerosols are to heat the planet. Please click here to read the article.
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Michael Mishchenko
“TBD”
July 16, 2009 at 3:30 PM
Natalie Mahowald
“TBD”
August 20, 2009 at 3:30 PM
View the Calendar
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