Validation of version-4.61 methane and nitrous oxide observed by MIPAS
Item
Title (Dublin Core)
Validation of version-4.61 methane and nitrous oxide observed by MIPAS
Description (Dublin Core)
The ENVISAT validation programme for the atmospheric instruments MIPAS, SCIAMACHY and GOMOS is based on a number of balloon-borne, aircraft, satellite and ground-based correlative measurements. In particular the activities of validation scientists were coordinated by ESA within the ENVISAT Stratospheric Aircraft and Balloon Campaign or ESABC. As part of a series of similar papers on other species [this issue] and in parallel to the contribution of the individual validation teams, the present paper provides a synthesis of comparisons performed between MIPAS CH<sub>4</sub> and N<sub>2</sub>O profiles produced by the current ESA operational software (Instrument Processing Facility version 4.61 or IPF v4.61, full resolution MIPAS data covering the period 9 July 2002 to 26 March 2004) and correlative measurements obtained from balloon and aircraft experiments as well as from satellite sensors or from ground-based instruments. In the middle stratosphere, no significant bias is observed between MIPAS and correlative measurements, and MIPAS is providing a very consistent and global picture of the distribution of CH<sub>4</sub> and N<sub>2</sub>O in this region. In average, the MIPAS CH<sub>4</sub> values show a small positive bias in the lower stratosphere of about 5%. A similar situation is observed for N<sub>2</sub>O with a positive bias of 4%. In the lower stratosphere/upper troposphere (UT/LS) the individual used MIPAS data version 4.61 still exhibits some unphysical oscillations in individual CH<sub>4</sub> and N<sub>2</sub>O profiles caused by the processing algorithm (with almost no regularization). Taking these problems into account, the MIPAS CH<sub>4</sub> and N<sub>2</sub>O profiles are behaving as expected from the internal error estimation of IPF v4.61 and the estimated errors of the correlative measurements.
Creator (Dublin Core)
Payan, S.
Camy-Peyret, C.
Oelhaf, H.
Wetzel, G.
Maucher, G.
Keim, C.
Pirre, M.
Huret, N.
Engel, A.
Volk, M. C.
Kuellmann, H.
Kuttippurath, J.
Cortesi, U.
Bianchini, G.
Mencaraglia, F.
Raspollini, P.
Redaelli, G.
Vigouroux, C.
Mazière, M.
Mikuteit, S.
Blumenstock, T.
Velazco, V.
Notholt, J.
Mahieu, E.
Duchatelet, P.
Smale, D.
Wood, S.
Jones, N.
Piccolo, C.
Payne, V.
Bracher, A.
Glatthor, N.
Stiller, G.
Grunow, K.
Jeseck, P.
Te, Y.
Butz, A.
Date (Dublin Core)
2018-08-09
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-9-413-2009
https://acp.copernicus.org/articles/9/413/2009/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
