Comparison of CMAM simulations of carbon monoxide (CO), nitrous oxide (N2O), and methane (CH4) with observations from Odin/SMR, ACE-FTS, and Aura/MLS
Simulations of CO, N2O and CH4 from a coupled chemistry-climate model (CMAM) are compared with satellite measurements from Odin Sub-Millimeter Radiometer (Odin/SMR), Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS), and Aura Microwave Limb Sounder (Aura/MLS). Pressure-latitu...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , , , , , , |
Language: | unknown |
Published: |
2009
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-9-3233-2009 https://research.chalmers.se/en/publication/94283 |
id |
ftchalmersuniv:oai:research.chalmers.se:94283 |
---|---|
record_format |
openpolar |
spelling |
ftchalmersuniv:oai:research.chalmers.se:94283 2023-05-15T14:04:48+02:00 Comparison of CMAM simulations of carbon monoxide (CO), nitrous oxide (N2O), and methane (CH4) with observations from Odin/SMR, ACE-FTS, and Aura/MLS Jin, J.J. Semeniuk, K. Beagley, S.R. Fomichev, V.I. Jonsson, A.I. McConnell, J.C. Urban, Joachim Murtagh, Donal Manney, G.L. Boone, C.D. Bernath, P.F. Walker, K.A. Barret, B. Ricaud, P. Dupuy, E. 2009 text https://doi.org/10.5194/acp-9-3233-2009 https://research.chalmers.se/en/publication/94283 unknown http://dx.doi.org/10.5194/acp-9-3233-2009 https://research.chalmers.se/en/publication/94283 Meteorology and Atmospheric Sciences Earth and Related Environmental Sciences 2009 ftchalmersuniv https://doi.org/10.5194/acp-9-3233-2009 2022-12-11T07:04:26Z Simulations of CO, N2O and CH4 from a coupled chemistry-climate model (CMAM) are compared with satellite measurements from Odin Sub-Millimeter Radiometer (Odin/SMR), Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS), and Aura Microwave Limb Sounder (Aura/MLS). Pressure-latitude cross-sections and seasonal time series demonstrate that CMAM reproduces the observed global CO, N2O, and CH4 distributions quite well. Generally, excellent agreement with measurements is found between CO simulations and observations in the stratosphere and mesosphere. Differences between the simulations and the ACE-FTS observations are generally within 30%, and the differences between CMAM results and SMR and MLS observations are slightly larger. These differences are comparable with the difference between the instruments in the upper stratosphere and mesosphere. Comparisons of N2O show that CMAM results are usually within 15% of the measurements in the lower and middle stratosphere, and the observations are close to each other. However, the standard version of CMAM has a low N2O bias in the upper stratosphere. The CMAM CH4 distribution also reproduces the observations in the lower stratosphere, but has a similar but smaller negative bias in the upper stratosphere. The negative bias may be due to that the gravity drag is not fully resolved in the model. The simulated polar CO evolution in the Arctic and Antarctic agrees with the ACE and MLS observations. CO measurements from 2006 show evidence of enhanced descent of air from the mesosphere into the stratosphere in the Arctic after strong stratospheric sudden warmings (SSWs). CMAM also shows strong descent of air after SSWs. In the tropics, CMAM captures the annual oscillation in the lower stratosphere and the semiannual oscillations at the stratopause and mesopause seen in Aura/MLS CO and N2O observations and in Odin/SMR N2O observations. The Odin/SMR and Aura/MLS N2O observations also show a quasi-biennial oscillation (QBO) in the upper stratosphere, whereas, the ... Other/Unknown Material Antarc* Antarctic Arctic Chalmers University of Technology: Chalmers research Antarctic Arctic Atmospheric Chemistry and Physics 9 10 3233 3252 |
institution |
Open Polar |
collection |
Chalmers University of Technology: Chalmers research |
op_collection_id |
ftchalmersuniv |
language |
unknown |
topic |
Meteorology and Atmospheric Sciences Earth and Related Environmental Sciences |
spellingShingle |
Meteorology and Atmospheric Sciences Earth and Related Environmental Sciences Jin, J.J. Semeniuk, K. Beagley, S.R. Fomichev, V.I. Jonsson, A.I. McConnell, J.C. Urban, Joachim Murtagh, Donal Manney, G.L. Boone, C.D. Bernath, P.F. Walker, K.A. Barret, B. Ricaud, P. Dupuy, E. Comparison of CMAM simulations of carbon monoxide (CO), nitrous oxide (N2O), and methane (CH4) with observations from Odin/SMR, ACE-FTS, and Aura/MLS |
topic_facet |
Meteorology and Atmospheric Sciences Earth and Related Environmental Sciences |
description |
Simulations of CO, N2O and CH4 from a coupled chemistry-climate model (CMAM) are compared with satellite measurements from Odin Sub-Millimeter Radiometer (Odin/SMR), Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS), and Aura Microwave Limb Sounder (Aura/MLS). Pressure-latitude cross-sections and seasonal time series demonstrate that CMAM reproduces the observed global CO, N2O, and CH4 distributions quite well. Generally, excellent agreement with measurements is found between CO simulations and observations in the stratosphere and mesosphere. Differences between the simulations and the ACE-FTS observations are generally within 30%, and the differences between CMAM results and SMR and MLS observations are slightly larger. These differences are comparable with the difference between the instruments in the upper stratosphere and mesosphere. Comparisons of N2O show that CMAM results are usually within 15% of the measurements in the lower and middle stratosphere, and the observations are close to each other. However, the standard version of CMAM has a low N2O bias in the upper stratosphere. The CMAM CH4 distribution also reproduces the observations in the lower stratosphere, but has a similar but smaller negative bias in the upper stratosphere. The negative bias may be due to that the gravity drag is not fully resolved in the model. The simulated polar CO evolution in the Arctic and Antarctic agrees with the ACE and MLS observations. CO measurements from 2006 show evidence of enhanced descent of air from the mesosphere into the stratosphere in the Arctic after strong stratospheric sudden warmings (SSWs). CMAM also shows strong descent of air after SSWs. In the tropics, CMAM captures the annual oscillation in the lower stratosphere and the semiannual oscillations at the stratopause and mesopause seen in Aura/MLS CO and N2O observations and in Odin/SMR N2O observations. The Odin/SMR and Aura/MLS N2O observations also show a quasi-biennial oscillation (QBO) in the upper stratosphere, whereas, the ... |
author |
Jin, J.J. Semeniuk, K. Beagley, S.R. Fomichev, V.I. Jonsson, A.I. McConnell, J.C. Urban, Joachim Murtagh, Donal Manney, G.L. Boone, C.D. Bernath, P.F. Walker, K.A. Barret, B. Ricaud, P. Dupuy, E. |
author_facet |
Jin, J.J. Semeniuk, K. Beagley, S.R. Fomichev, V.I. Jonsson, A.I. McConnell, J.C. Urban, Joachim Murtagh, Donal Manney, G.L. Boone, C.D. Bernath, P.F. Walker, K.A. Barret, B. Ricaud, P. Dupuy, E. |
author_sort |
Jin, J.J. |
title |
Comparison of CMAM simulations of carbon monoxide (CO), nitrous oxide (N2O), and methane (CH4) with observations from Odin/SMR, ACE-FTS, and Aura/MLS |
title_short |
Comparison of CMAM simulations of carbon monoxide (CO), nitrous oxide (N2O), and methane (CH4) with observations from Odin/SMR, ACE-FTS, and Aura/MLS |
title_full |
Comparison of CMAM simulations of carbon monoxide (CO), nitrous oxide (N2O), and methane (CH4) with observations from Odin/SMR, ACE-FTS, and Aura/MLS |
title_fullStr |
Comparison of CMAM simulations of carbon monoxide (CO), nitrous oxide (N2O), and methane (CH4) with observations from Odin/SMR, ACE-FTS, and Aura/MLS |
title_full_unstemmed |
Comparison of CMAM simulations of carbon monoxide (CO), nitrous oxide (N2O), and methane (CH4) with observations from Odin/SMR, ACE-FTS, and Aura/MLS |
title_sort |
comparison of cmam simulations of carbon monoxide (co), nitrous oxide (n2o), and methane (ch4) with observations from odin/smr, ace-fts, and aura/mls |
publishDate |
2009 |
url |
https://doi.org/10.5194/acp-9-3233-2009 https://research.chalmers.se/en/publication/94283 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_relation |
http://dx.doi.org/10.5194/acp-9-3233-2009 https://research.chalmers.se/en/publication/94283 |
op_doi |
https://doi.org/10.5194/acp-9-3233-2009 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
9 |
container_issue |
10 |
container_start_page |
3233 |
op_container_end_page |
3252 |
_version_ |
1766276144599924736 |