Oxford-RAL IASI Group Meetings

Meeting#27 (04Feb20 @ RAL)

RAL: Elisa Carboni, Brian Kerridge, Diane Knappett, Richard Siddans, Lucy Ventress

Oxford (via Zoom): Anu Dudhia, Isabelle Taylor

RFM (AD) [Prev] [Next]

RFM v5.10 being tested.

Includes capability to model 1st order line-mixing using data extracted from the HITRAN database, unfortunately all the HITRAN data is currently set to '#####' so will need to cobble together something from Chris Boone's data in order to test it

SO2 (IT) [Prev] [Next]

Retrieving SO2 from Raikoke (June 2019).

New EUMETSAT policy means that IASI data can only be ordered from EUMETSAT and this is a very slow process (>3 months to obtain 3 months of data).

CrIS (RS) [Next]

CrIS data now incorporated into the RAL-IMS scheme.

Also more organic molecules added. CrIS seems better than IASI for NH3 due to a combination of better S/N and/or sampling later in the day, although worse spectral resolution and gaps between bands.

CrIS data also more easily obtainable than IASI.

Also a first look at Chinese GIIRS (geostationary FTIR) data - looks quite noisy compared to IASI/CrIS.

CH4/CO (DK) [Prev] [Next]

Combining SW from S5P (TROPOMI) and IR from CrIS (similar orbits) to provide resolved CH4 and CO profiles.