English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Contributions of the troposphere and stratosphere to CH4 model biases

Wang, Z., Warneke, T., Deutscher, N., Notholt, J., Karstens, U., Saunois, M., et al. (2017). Contributions of the troposphere and stratosphere to CH4 model biases. Atmospheric Chemistry and Physics, 17(21), 13283-13295. doi:10.5194/acp-17-13283-2017.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-2C15-9 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-27B9-D
Genre: Journal Article

Files

show Files
hide Files
:
BGC2569D.pdf (Publisher version), 513KB
Name:
BGC2569D.pdf
Description:
Discussion paper
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
:
BGC2569.pdf (Publisher version), 551KB
Name:
BGC2569.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-

Locators

show
hide
Locator:
http://dx.doi.org/10.5194/acp-17-13283-2017 (Publisher version)
Description:
OA

Creators

show
hide
 Creators:
Wang, Zhiting, Author
Warneke, Thorsten, Author
Deutscher, Nicholas, Author
Notholt, Justus, Author
Karstens, Ute1, Author              
Saunois, Marielle, Author
Schneider, Mattias, Author
Sussmann, Ralf, Author
Sembhi, Harjinder, Author
Griffith, Dave W. T., Author
Pollar, Dave F., Author
Kivi, Rigel, Author
Petri, Christof, Author
Velazco, Voltaire A., Author
Ramonet, Michel, Author
Chen, Huilin, Author
Affiliations:
1Regional Scale Modelling of Atmospheric Trace Gases, Dr. U. Karstens, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497788              

Content

show
hide
Free keywords: -
 Abstract: Inverse modeling is a useful tool to retrieve CH4 fluxes; however, evaluation of the applied chemical transport model is an important step before using the inverted emissions. For inversions using column data one concern is how well the model represents stratospheric and tropospheric CH4 respectively when assimilating total column measurements. In this study atmospheric CH4 from three inverse models is compared to FTS (Fourier Transform Spectrometry), satellite and in situ measurements. Using the FTS measurements the model biases are separated into stratospheric and tropospheric contributions. When averaged over all FTS sites the model bias amplitudes (absolute model to FTS differences) are 7.4±5.1 ppb, 6.7±4.8 ppb, and 8.1±5.5 ppb in the troposphere for the models TM3, TM5-4DVAR, LMDz-PYVAR, respectively, and 4.3±9.9 ppb, 4.7±9.9 ppb, and 6.2±11.2 ppb in the stratosphere. The tropospheric model biases show a latitudinal gradient for all models, however there are no clear latitudinal dependencies for stratospheric model biases visible except with the LMDz-PYVAR model. The latitudinal gradient is not present in a comparison with in situ measurements, which is attributed to the different longitudinal coverage of FTS and in situ measurements. Similarly, a latitudinal pattern exists in model biases in vertical CH4 gradients in the troposphere, which indicates vertical transports of tropospheric CH4 is not represented correctly in the models.

Details

show
hide
Language(s):
 Dates: 2017-10-032017-11-092017
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: Other: BGC2569
DOI: 10.5194/acp-17-13283-2017
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Atmospheric Chemistry and Physics
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Katlenburg-Lindau, Germany : European Geosciences Union
Pages: - Volume / Issue: 17 (21) Sequence Number: - Start / End Page: 13283 - 13295 Identifier: ISSN: 1680-7316
CoNE: /journals/resource/111030403014016