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On the determination of biases in satellite‐derived temperature profiles
Author(s) -
Bhatt Praful P.,
Remsberg Ellis E.,
Schmidlin Francis J.,
Gordley Larry L.,
Burton John C.
Publication year - 1994
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/94gl01125
Subject(s) - latitude , altitude (triangle) , satellite , atmospheric sciences , environmental science , meteorology , physics , geology , geodesy , astronomy , mathematics , geometry
Comparisons are presented between Nimbus 7 LIMS mapped temperatures and both Datasonde and sphere in situ rocketsonde temperature measurements. With this approach up to 666 LIMS/Datasonde pairs were obtained for various pressure levels to look for small biases in LIMS temperatures as a function of altitude, latitude and season. Between 10‐1 hPa LIMS and Datasonde agree everywhere to better than ±2 K with the exception of a warm bias of about 3 K at 2 hPa at high latitudes. However, LIMS is colder than the Datasonde by about 4 K at 0.4 hPa and by about 8‐10 K at 0.1 hPa. When compared with the more accurate sphere temperatures the bias at 0.1 hPa is reduced by nearly one‐half. These results indicate that the LIMS zonal mean constituent profiles are nearly free of temperature bias, except perhaps at 0.1 hPa.