Validation of revised methane and nitrous oxide profiles from MIPAS-ENVISAT
Artikel i vetenskaplig tidskrift, 2016

Improved versions of CH4 and N2O profiles derived at the Institute of Meteorology and Climate Research and Instituto de Astrofísica de Andalucía (CSIC) from spectra measured by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) have become available. For the MIPAS full-resolution period (2002-2004) these are V5H-CH4-21 and V5H-N2O-21 and for the reduced-resolution period (2005-2012) these are V5R-CH4-224, V5R-CH4-225, V5R-N2O-224 and V5R-N2O-225. Here, we compare CH4 profiles to those measured by the Fourier Transform Spectrometer on board of the Atmospheric Chemistry Experiment (ACE-FTS), the HALogen Occultation Experiment (HALOE) and the Scanning Imaging Absorption Spectrometer for Atmospheric CHartographY (SCIAMACHY), to the Global Cooperative Air Sampling Network (GCASN) surface data. We find the MIPAS CH4 profiles below 25 km to be typically higher of the order of 0.1 ppmv for both measurement periods. N2O profiles are compared to those measured by ACE-FTS, the Microwave Limb Sounder on board of the Aura satellite (Aura-MLS) and the Sub-millimetre Radiometer on board of the Odin satellite (Odin-SMR) as well as to the Halocarbons and other Atmospheric Trace Species Group (HATS) surface data. The mixing ratios of the satellite instruments agree well with each other for the full-resolution period. For the reduced-resolution period, MIPAS produces similar values as Odin-SMR, but higher values than ACE-FTS and HATS. Below 27 km, the MIPAS profiles show higher mixing ratios than Aura-MLS, and lower values between 27 and 41 km. Cross-comparisons between the two MIPAS measurement periods show that they generally agree quite well, but, especially for CH4, the reduced-resolution period seems to produce slightly higher mixing ratios than the full-resolution data.

Författare

J. Plieninger

Karlsruher Institut für Technologie (KIT)

A. Laeng

Karlsruher Institut für Technologie (KIT)

S. Lossow

Karlsruher Institut für Technologie (KIT)

T. von Clarmann

Karlsruher Institut für Technologie (KIT)

G.P. Stiller

Karlsruher Institut für Technologie (KIT)

S. Kellmann

Karlsruher Institut für Technologie (KIT)

A. Linden

Karlsruher Institut für Technologie (KIT)

M. Kiefer

Karlsruher Institut für Technologie (KIT)

K.A. Walker

University of Toronto

S. Noël

Universität Bremen

M.E. Hervig

GATS, Inc.

M. McHugh

Science and Technology Corporation, Hampton

A. Lambert

Jet Propulsion Laboratory, California Institute of Technology

Joachim Urban

Chalmers, Rymd- och geovetenskap, Global miljömätteknik och modellering

J.W. Elkins

National Oceanic and Atmospheric Administration

Donal Murtagh

Chalmers, Rymd- och geovetenskap, Global miljömätteknik och modellering

Atmospheric Measurement Techniques

1867-1381 (ISSN) 1867-8548 (eISSN)

Vol. 9 2 765-779

Ämneskategorier

Geovetenskap och miljövetenskap

DOI

10.5194/amt-9-765-2016

Mer information

Senast uppdaterat

2018-09-06