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Representation of tropical deep convection in atmospheric models – Part 1: Meteorology and comparison with satellite observations
Atmospheric Chemistry and Physics (ACP), Vol. 11. N° 3. Russo M.R.; Marécal V.; Hoyle C.R.; et al. - Copernicus GmbH, 2011Fast convective transport in the tropics can efficiently redistribute water vapour and pollutants up to the upper troposphere. In this study we compare tropical convection characteristics for the year 2005 in a range of atmospheric models, including numerical weather prediction (NWP) models, chemistry transport models (CTMs), and chemistry-climate models (CCMs). The model runs have been performed within the framework of the SCOUT-O3 (Stratospheric-Climate Links with Emphasis on the Upper Troposphere and Lower Stratosphere) project. The characteristics of tropical convection, such as seasonal c ...
[article]Representation of tropical deep convection in atmospheric models – Part 1: Meteorology and comparison with satellite observations
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Available online: http://dx.doi.org/10.5194/acp-11-2765-2011
M.R. Russo ; V. Marécal ; C.R. Hoyle ; J. Arteta ; C. Chemel ; M.P. Chipperfield ; O. Dessens ; W. Feng ; J.S. Hosking ; P.J. Telford ; O. Wild ; X. Yang ; J.A. Pyle
in Atmospheric Chemistry and Physics (ACP) > Vol. 11. N° 3 [03/01/2011] . - p.2765-2786Fast convective transport in the tropics can efficiently redistribute water vapour and pollutants up to the upper troposphere. In this study we compare tropical convection characteristics for the year 2005 in a range of atmospheric models, including numerical weather prediction (NWP) models, chemistry transport models (CTMs), and chemistry-climate models (CCMs). The model runs have been performed within the framework of the SCOUT-O3 (Stratospheric-Climate Links with Emphasis on the Upper Troposphere and Lower Stratosphere) project. The characteristics of tropical convection, such as seasonal cycle, land/sea contrast and vertical extent, are analysed using satellite observations as a benchmark for model simulations. The observational datasets used in this work comprise precipitation rates, outgoing longwave radiation, cloud-top pressure, and water vapour from a number of independent sources, including ERA-Interim analyses. Most models are generally able to reproduce the seasonal cycle and strength of precipitation for continental regions but show larger discrepancies with observations for the Maritime Continent region. The frequency distribution of high clouds from models and observations is calculated using highly temporally-resolved (up to 3-hourly) cloud top data. The percentage of clouds above 15 km varies significantly between the models. Vertical profiles of water vapour in the upper troposphere-lower stratosphere (UTLS) show large differences between the models which can only be partly attributed to temperature differences. If a convective plume reaches above the level of zero net radiative heating, which is estimated to be ~15 km in the tropics, the air detrained from it can be transported upwards by radiative heating into the lower stratosphere. In this context, we discuss the role of tropical convection as a precursor for the transport of short-lived species into the lower stratosphere.
Language(s): English
Format: Digital (Free)Tags: Atmospheric circulation ; Chemical model of climate ; Modelling ; Observations ; Numerical weather prediction ; Research ; Satellite
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WCRP, 132. SPARC Report on the Evaluation of Chemistry-Climate Models
Three-dimensional climate models with a fully interactive representation of stratospheric ozone chemistry otherwise known as stratosphere-resolving chemistry-climate models (CCMs) are key tools for the attribution and prediction of stratospheric ozone changes arising from the combined effects of changes in the amounts of greenhouse gases (GHG) and ozone-depleting substances (ODS). These models can also be used to infer potential effects of stratospheric changes on the climate of the troposphere. In order to know how much confidence can be placed in the results from the CCMs, both individually ...
Published by: WMO, ICSU ; 2010
Three-dimensional climate models with a fully interactive representation of stratospheric ozone chemistry otherwise known as stratosphere-resolving chemistry-climate models (CCMs) are key tools for the attribution and prediction of stratospheric ozone changes arising from the combined effects of changes in the amounts of greenhouse gases (GHG) and ozone-depleting substances (ODS). These models can also be used to infer potential effects of stratospheric changes on the climate of the troposphere. In order to know how much confidence can be placed in the results from the CCMs, both individually and collectively, it is necessary to assess their performance by comparison with observations and known physical constraints.
Notes: Chapters:
Chemistry Climate Models and Scenarios, Radiation, Stratospheric Dynamics, Transport, Stratospheric Chemistry, Upper Troposphere and Lower Stratosphere, Natural Variability of Stratospheric Ozone, Long-term projections of stratospheric ozone, Effects of the stratosphere on the troposphereCollection(s) and Series: WMO/TD- No. 1526; WCRP- No. 132
Language(s): English
Format: Digital (Free), Hard copyTags: Climate ; Chemical model of climate ; World Climate Research Programme (WCRP) ; SPARC Report No.5
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IPCC Expert Meeting on Assessing and Combining Multi Model Climate Projections : meeting report
IPCC, 2009
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Available online: https://www.ipcc.ch/publication/ipcc-expert-meeting-on-assessing-and-combining-m [...]
Published by: IPCC ; 2009
Language(s): English
Format: Digital (Free), Hard copy (ill.)Tags: Climate ; Climate change ; Chemical model of climate ; Scenario ; Intergovernmental Panel on Climate Change (IPCC)
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An Introduction to Simple Climate Models used in the IPCC Second Assessment Report : IPCC Technical Paper II
World Meteorological Organization (WMO) ; Houghton John Theodore; Meira Filho L.G.; et al. - IPCC, 1997
An Introduction to Simple Climate Models used in the IPCC Second Assessment Report: IPCC Technical Paper II
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Available online: https://www.ipcc.ch/publication/an-introduction-to-simple-climate-models-used-in [...]
World Meteorological Organization (WMO) ; John Theodore Houghton ; L.G. Meira Filho ; D.J. Griggs ; United Nations Environment Programme ; Intergovernmental Panel on Climate Change
Published by: IPCC ; 1997Language(s): English; Other Languages: French, Spanish
Format: Digital (Free), Hard copyISBN (or other code): 978-92-9169-101-2
Tags: Climate ; Chemical model of climate ; Climate change ; Intergovernmental Panel on Climate Change (IPCC)
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Introduction aux modèles climatiques simples employés dans le Deuxième Rapport d’évaluation du GIEC : Document technique II du GIEC
Organisation météorologique mondiale (OMM); Houghton John Theodore; Meira Filho L.G.; et al. - GIEC, 1997
Introduction aux modèles climatiques simples employés dans le Deuxième Rapport d’évaluation du GIEC: Document technique II du GIEC
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Available online: https://www.ipcc.ch/publication/an-introduction-to-simple-climate-models-used-in [...]
Organisation météorologique mondiale ; John Theodore Houghton ; L.G. Meira Filho ; D.J. Griggs ; Programme des Nations Unies pour l'environnement ; Groupe d'Experts Intergouvernemental sur l'Evolution du Climat (Genève, Suisse)
Published by: GIEC ; 1997Language(s): French; Other Languages: English, Spanish
Format: Digital (Free), Hard copyTags: Climate ; Chemical model of climate ; Climate change ; Intergovernmental Panel on Climate Change (IPCC)
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