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Title

Greenhouse Gases, Aerosols and Reducing Future Climate Uncertainties

Publication Year

2012

Author(s)
  • Le Treut, Herve
Source
SURVEYS IN GEOPHYSICS Volume: 33 Issue: 3-4 Pages: 723-731 Published: 2012
ISSN
0169-3298
Abstract

The past record of global earth surface temperatures is unable to offer quantitative evidence about the amplitude of climate sensitivity, due to the competing effects of long-lived greenhouse gases and short-lived aerosols. This factor constitutes one of the reasons why uncertainties about climate sensitivity have remained almost unchanged for more than 30 years, and it is also limiting our current capacity to propose reliable climate projections for the coming century. This paper offers a short review of the studies that have dealt with this issue. A number of approaches aim at a process-oriented diagnostic of current models. These studies are in constant progress since the launch of remote-sensing instruments, such as those from the A-train satellite constellation. Past climate fluctuations may also offer some limited possibilities to discriminate the effects of greenhouse gases and aerosols. There is therefore a real hope that climate projections may eventually become more accurate, which would be extremely useful in monitoring global warming during the next decades.

Author Keyword(s)
  • Greenhouse gases
  • Aerosols
  • Climate sensitivity
  • Climate feebacks
KeyWord(s) Plus
  • GENERAL-CIRCULATION MODEL
  • SURFACE-TEMPERATURE
  • SENSITIVITY
  • ATMOSPHERE
  • FEEDBACK
  • SIMULATIONS
  • DEPENDENCE
  • OCEAN
  • CYCLE
ESI Discipline(s)
  • Geosciences
Web of Science Category(ies)
  • Geochemistry & Geophysics
Adress(es)

Univ Paris 06, Meteorol Dynam Lab, Inst Pierre Simon Laplace, Paris, France

Reprint Adress

Le Treut, H (reprint author), Univ Paris 06, Meteorol Dynam Lab, Inst Pierre Simon Laplace, Paris, France.

Country(ies)
  • France
CNRS - Adress(es)
  • Institut Pierre-Simon Laplace (IPSL), FR636
  • Laboratoire de météorologie dynamique (LMD), UMR8539
Accession Number
WOS:000305535600025
uid:/ZGQWGKV9
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