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Comparison of marine stratocumulus cloud top heights in the southeastern Pacific retrieved from satellites with coincident ship-based observations

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Title Comparison of marine stratocumulus cloud top heights in the southeastern Pacific retrieved from satellites with coincident ship-based observations
Names Garay, Michael J. (creator)
de Szoeke, Simon P. (creator)
Moroney, Catherine M. (creator)
Date Issued 2008-09-27 (iso8601)
Note This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at: http://agupubs.onlinelibrary.wiley.com/agu/jgr/journal/10.1002/%28ISSN%292169-8996/.
Abstract In order to better understand the general problem of satellite cloud top height
retrievals for low clouds, observations made by NOAA research vessels in the
stratocumulus region in the southeastern Pacific during cruises in 2001 and 2003 to 2006
were matched with near-coincident retrievals from the Moderate Resolution Imaging
Spectroradiometer (MODIS) and Multiangle Imaging SpectroRadiometer (MISR)
instruments on the Terra satellite, along with a limited set of ISCCP 30-km (DX)
retrievals. The ISCCP cloud top heights, determined from the cloud top pressures, were
found to be biased high by between 1400 and 2000 m within the limited comparison data
set. Like the International Satellite Cloud Climatology Project (ISCCP) results, the
MODIS retrievals were biased high by more than 2000 m, while the MISR retrievals had
errors on the order of 230 to 420 m, with the wind corrected heights having almost no
bias. The extremely large bias in the ISCCP and MODIS retrievals was traced to their
reliance on low-resolution observations or models of the atmospheric temperature
structure. Cloud top height retrievals based on satellite cloud top temperatures and a
constant atmospheric lapse rate agreed substantially better with the ship-based
measurements.
Genre Article
Topic Marine stratocumulus
Identifier Garay, M. J., S. P. de Szoeke, and C. M. Moroney (2008). Comparison of marine stratocumulus cloud top heights in the southeastern Pacific retrieved from satellites with coincident ship-based observations. Journal of Geophysical Research: Atmospheres, 113(D18), D18204. doi:10.1029/2008JD009975

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