The Tropospheric Humidity Trends of NCEP/NCAR Reanalysis Before the Satellite Era (original) (raw)

Abstract

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This study investigates trends in tropospheric humidity based on the NCEP/NCAR Reanalysis data prior to the advent of satellite observations. It highlights the significant negative trend in Longwave Cloud Radiative Forcing (LWCF) and attributes this trend primarily to upper tropospheric humidity variations. Various potential causes for observed trends are examined, including instrument characteristics and procedural changes in humidity measurement.

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