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Feb 2016: Publication of the Megha-Tropiques Technical Memorandum n7
This technical report presents recent effort to compute variograms using a spectral method. Variograms are used to compute the sampliing uncertainty of the 1°/1 day rainfall amount of the TAPEER product. The document is available here: Megha-Tropiques Technical Memorandum n°7.
 
Feb 2016: Collaboration between the MT french science team and the Indian Institue of Science
Clement Guilloteau (student from the Megha-Tropiques french scientific team) is visiting the Indian Institue of Science in Bangalore as part of his doctoral project to collaborate with Dr. V. Venugopal from December 2015 to February 2016. The aim of this visit is to benefit from Dr. Venugopal's expert knowledge in multi-scale representation in view of the downscaling of the Megha-Tropiques rainfall product. The collaboration will also be an opportunity to test the methods developed for West Africa under the Indian climate." 
 
September 2015: Release of relative humidity profile products

Layer-averaged Relative Humidity profiles are now available on the ICARE data center  since the launch of the Megha-Tropiques satellite. This product decomposes the troposphere into 6 layers: 100-200hPa, 250-350hPa, 400-600hPa, 650-700hPa, 750-800hPa and 850-950hPa. The retrieval scheme named ARPIA for "Atmospheric Relative humidity profile Including the Analysis of confidence intervals" encompasses the estimation of the mean RH as well as its standard deviation interpreted as the 1-sigma confidence interval. ARPIA considered cloud-free and cloudy conditions, oceanic and continental scenes. The only limit is for icy layers on top of convective clouds and for precipitating conditions, which are withdrawn using the Hong et al (2005) threshold method adapted for SAPHIR channels.

The details of the method is described in a recently submitted paper (Brogniez et al., hopefully soon available) 

 

Last Updated ( Tuesday, 02 February 2016 )
 
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