Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES IEEE Transactions on Geoscience and Remote Sensing 3057-3064 Microwave radiometry water vapor retrieval wet tropospheric correction 2009 PAR00004047 ENG IEEE Transactions on Geoscience and Remote Sensing 0196-2892 ISI:000269230100008 9 10.1109/tgrs.2009.2020433 https://www.documentation.ird.fr/hor/PAR00004047 47 Horizon (IRD) Algorithms proposed to retrieve water vapor are usually developed using statistical regression. Recent results have shown that this global statistical approach creates systematic geographical errors implying systematic biases. In the particular case of the wet tropospheric correction for altimetry missions, these biases directly distort the sea level estimation. After an in-depth analysis of the retrieval errors, we propose a new approach that significantly improves the quality of the retrieval algorithm. 126 ; 021 UR182