Two cloud water models (Decker and Salonen) that can be included in the radiative transfer to simulate brightness temperatures from radiosonde data are analyzed. A new cloud model is also proposed: we suggest an improvement of the Salonen’s humidity threshold for detecting the presence of clouds, and a new cloud density function for computing cloud liquid and ice density within a cloud. The performances of the three models are assessed at the Atmospheric Radiation Measurement (ARM) Program’s Southern Great Plaints (SGP) site in Oklahoma, USA, by using data from Vaisala RS90 radiosondes, a ceilometer and a dual-channel microwave radiometer at 23.8 and 31.4 GHz (MWR)
Cloud model studies for the simulation of brightness temperatures: improvements and applications to cloud classification from radiosoundings
BASILI, Patrizia;BONAFONI, Stefania;
2007
Abstract
Two cloud water models (Decker and Salonen) that can be included in the radiative transfer to simulate brightness temperatures from radiosonde data are analyzed. A new cloud model is also proposed: we suggest an improvement of the Salonen’s humidity threshold for detecting the presence of clouds, and a new cloud density function for computing cloud liquid and ice density within a cloud. The performances of the three models are assessed at the Atmospheric Radiation Measurement (ARM) Program’s Southern Great Plaints (SGP) site in Oklahoma, USA, by using data from Vaisala RS90 radiosondes, a ceilometer and a dual-channel microwave radiometer at 23.8 and 31.4 GHz (MWR)I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.