SOFRID-O3 v3.5: improvements of tropospheric Ozone retrievals using climatological a priori profiles

For the first time, we have implemented a comprehensive dynamical a priori profile which takes the pixel location, time and tropopause height into account for IASI O3 retrievals . The use of this dynamical a priori profile largely improves the retrievals concerning two main aspects: (i) it corrects high biases for low-tropospheric O3 regions such as […]

Metop/IASI tropospheric nitrous oxide (N2O) validated with global NDACC-FTIR data

Nitrous oxide (N2O) is the third most important greenhouse gas (GHG) after carbon dioxide (CO2) and methane (CH4). Its global warming potential is about 300 times larger than CO2 for a 100 year timescale. Surface in-situ observations show that N2O is steadily rising since the 1970’s. This positive trend is mostly caused by the rapid […]