Isaac Moradi

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Satellite-based layer average stratospheric temperature (T) climate data records (CDRs) now span more than three decades and so can elucidate climate variability associated with processes on multiple time scales. We intercompare and analyze available published T CDRs covering at least two decades, with a focus on Stratospheric Sounding Unit (SSU) and(More)
In this paper, the overall quality of the water vapor profiles of global operational radiosonde data for the period 2000–2009 is investigated using upper tropospheric humidity (UTH) retrieved from microwave satellite data. Overall, the nighttime radiosonde data showed a dry bias (−5% to −15%) over Europe, Australia, and New Zealand and systematically moist(More)
Microwave (MW) satellite data are widely used as input in numerical weather prediction models and also in other applications such as climate monitoring and re-analysis. MW satellite data are prone to different problems, including geolocation errors. These data do not have a fine spatial resolution like visible and infrared data; therefore, the accuracy of(More)
This study evaluates the radiometric accuracy of observations from Advanced Technology Microwave Sounder (ATMS) onboard Suomi National Polar-orbiting Partnership (S-NPP) and Sondeur Atmospherique du Profil d’ Humidité Intropicale par Radiométrie (SAPHIR) onboard Megha-Tropiques (M-T) through inter-calibration as well as validation versus in-situ radiosonde(More)
A method is presented to calculate layer-averaged tropospheric humidity (LAH) from the observations of the Advanced Technology Microwave Sounder (ATMS) water vapor channels. The method is based on a linear relation between the satellite brightness temperatures (Tb) and natural logarithm of Jacobian weighted humidity. The empirical coefficients of this(More)
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