On error estimation in atmospheric CO2 inversions

Richard J. Engelen, A. Scott Denning, Kevin Gurney

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

This paper explores various sources of error in atmospheric CO2 synthesis inversions using global circulation models. The estimation of prior, observation, model transport, and representation errors is described, and the latter two error sources are explored in more detail. Not accounting for these errors will act as a hard constraint on the inversion and will produce incorrect solutions to the problem as is shown in some example inversions. The magnitude of these errors falls generally between about 10% and 100% in the retrieved fluxes but can be even larger. This makes it highly desirable to avoid hard constraints and apply any prior information we have about the surface fluxes as a weak constraint to the inversion problem.

Original languageEnglish (US)
JournalJournal of Geophysical Research: Atmospheres
Volume107
Issue number22
DOIs
StatePublished - 2002
Externally publishedYes

Fingerprint

Error analysis
inversions
Fluxes
surface flux
inversion
synthesis

Keywords

  • 0315 Atmospheric Composition and Structure: Biosphere/atmosphere interactions
  • 0322 Atmospheric Composition and Structure: Constituent sources and sinks
  • 0330 Atmospheric Composition and Structure: Geochemical cycles

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Atmospheric Science
  • Astronomy and Astrophysics
  • Oceanography

Cite this

On error estimation in atmospheric CO2 inversions. / Engelen, Richard J.; Denning, A. Scott; Gurney, Kevin.

In: Journal of Geophysical Research: Atmospheres, Vol. 107, No. 22, 2002.

Research output: Contribution to journalArticle

Engelen, Richard J. ; Denning, A. Scott ; Gurney, Kevin. / On error estimation in atmospheric CO2 inversions. In: Journal of Geophysical Research: Atmospheres. 2002 ; Vol. 107, No. 22.
@article{922edfe8bf444204998bac7ede63a1e4,
title = "On error estimation in atmospheric CO2 inversions",
abstract = "This paper explores various sources of error in atmospheric CO2 synthesis inversions using global circulation models. The estimation of prior, observation, model transport, and representation errors is described, and the latter two error sources are explored in more detail. Not accounting for these errors will act as a hard constraint on the inversion and will produce incorrect solutions to the problem as is shown in some example inversions. The magnitude of these errors falls generally between about 10{\%} and 100{\%} in the retrieved fluxes but can be even larger. This makes it highly desirable to avoid hard constraints and apply any prior information we have about the surface fluxes as a weak constraint to the inversion problem.",
keywords = "0315 Atmospheric Composition and Structure: Biosphere/atmosphere interactions, 0322 Atmospheric Composition and Structure: Constituent sources and sinks, 0330 Atmospheric Composition and Structure: Geochemical cycles",
author = "Engelen, {Richard J.} and Denning, {A. Scott} and Kevin Gurney",
year = "2002",
doi = "10.1029/2002JD002195",
language = "English (US)",
volume = "107",
journal = "Journal of Geophysical Research: Atmospheres",
issn = "2169-897X",
publisher = "Wiley-Blackwell",
number = "22",

}

TY - JOUR

T1 - On error estimation in atmospheric CO2 inversions

AU - Engelen, Richard J.

AU - Denning, A. Scott

AU - Gurney, Kevin

PY - 2002

Y1 - 2002

N2 - This paper explores various sources of error in atmospheric CO2 synthesis inversions using global circulation models. The estimation of prior, observation, model transport, and representation errors is described, and the latter two error sources are explored in more detail. Not accounting for these errors will act as a hard constraint on the inversion and will produce incorrect solutions to the problem as is shown in some example inversions. The magnitude of these errors falls generally between about 10% and 100% in the retrieved fluxes but can be even larger. This makes it highly desirable to avoid hard constraints and apply any prior information we have about the surface fluxes as a weak constraint to the inversion problem.

AB - This paper explores various sources of error in atmospheric CO2 synthesis inversions using global circulation models. The estimation of prior, observation, model transport, and representation errors is described, and the latter two error sources are explored in more detail. Not accounting for these errors will act as a hard constraint on the inversion and will produce incorrect solutions to the problem as is shown in some example inversions. The magnitude of these errors falls generally between about 10% and 100% in the retrieved fluxes but can be even larger. This makes it highly desirable to avoid hard constraints and apply any prior information we have about the surface fluxes as a weak constraint to the inversion problem.

KW - 0315 Atmospheric Composition and Structure: Biosphere/atmosphere interactions

KW - 0322 Atmospheric Composition and Structure: Constituent sources and sinks

KW - 0330 Atmospheric Composition and Structure: Geochemical cycles

UR - http://www.scopus.com/inward/record.url?scp=36448939079&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36448939079&partnerID=8YFLogxK

U2 - 10.1029/2002JD002195

DO - 10.1029/2002JD002195

M3 - Article

VL - 107

JO - Journal of Geophysical Research: Atmospheres

JF - Journal of Geophysical Research: Atmospheres

SN - 2169-897X

IS - 22

ER -