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 The only limit is for icy layers on top of convective clouds and for precipitating conditions, which are withdrawn using the Hong et al (2005) threshold method adapted for SAPHIR channels.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 ( Friday, 11 September 2015 )
18 May 2015: publication of the article on the Megha-Tropiques review
Publication of the article in Frontiers in Earth Science, section Atmospheric Science: The Megha-Tropiques mission: a review after three years in orbit, by Rémy Roca, Hélène Brogniez, Philippe Chambon, Olivier Chomette, Sophie Cloché, Marielle Eliane Gosset, Jean-francois Mahfouf, Patrick Raberanto, Nicolas Viltard. To view the online publication, please click here .

Last Updated ( Tuesday, 19 May 2015 )
Save the date: 29-30 june 2015, Joint workshop on uncertainties at 183 GHz, Paris

We are pleased to announce the "Joint workshop on uncertainties at 183GHz", which is aimed at identifying  possible explanations for biases observed between measured and simulated  183 GHz data.

The workshop, sponsored by the Megha-Tropiques mission, will be held at University Pierre et Marie Curie (Paris,  France) from 29-30 June 2015.
If you are willing to attend, please register via the workshop website :


Last Updated ( Friday, 20 March 2015 )
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