Public release of Megha-Tropiques/SAPHIR Relative Humidity profiles products– July 2015

Products

1 July 2015

The French Megha-Tropiques science team is pleased to announce the public release of the layer-averaged relative humidity profiles (L2-RH) derived from the SAPHIR instrument. This new Level-2 product is available from the start of the mission (October 2011) until present. (click here to access the data from the ICARE archive interface (current version: v1.00).
The SAPHIR relative humidity profiles are produced for 6 altitude layers: 100-200hPa, 250-350hPa, 400-600hPa, 650-700hPa, 750-800hPa and 850-950hPa. The retrieval scheme named ARPIA (“Atmospheric Relative humidity profile Including the Analysis of confidence intervals”) provides an estimate of the mean RH as well as its standard deviation interpreted as the 1-sigma confidence interval. ARPIA considers cloud-free and cloudy conditions, oceanic and continental scenes. Known limitations are for icy layers on top of convective clouds and for precipitating conditions, which are filtered out using the Hong et al. (2005) threshold method adapted for SAPHIR channels.
The details of the method will be soon available in a peer-reviewed paper.
Click here to access L2-RH products from the ICARE on-line archive.
Click here for more information on the L2-RH products on the Megha-Tropiques Science web site.

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