Années 1990 ; Années 2000 ; Changement climatique ; Changement global ; Climat ; Evaluation des connaissances ; Gouvernance ; IPCC ; Impact ; Institution ; Recherche ; Situation d'incertitude
The research that has been conducted on the IPCC (United nations Intergovernmental Panel on Climate Change) as an institution has come mostly from science and technology studies scholars and a small number of critical social scientists. The IPCC’s
influence on the construction, mobilization and consumption of climate change knowledge is considerable. The review therefore ends by encouraging geographers of science to turn their research and scholarship to understanding the roles played by the IPCC
Action anthropique ; Aérosol ; Changement global ; Effet de serre ; IPCC ; Ozone ; Politique gouvernementale ; Température ; Variation climatique
IPCC's statement in its 1995 report that a human influence was discernible in global climate has been widely quoted but often misunderstood. The aim of this paper is to explain some of the subtleties and the strands of evidence that lay behind
this landmark statement. To demonstrate the close linkage between the government-approved summary and the underlying chapters of the IPCC report the detailed evolution of the detection statement from first draft through to the form finally approved by the IPCC
L'A. présente et discute les conclusions du 2ème rapport IPCC concernant le changement global (effet de serre) et l'action anthropique. 3 parties: l'été 1995 et l'économie britannique; l'impact sur l'agriculture en Afrique; les politiques de
Earth System Science, the IPCC and the problem of downward causation in human geographies of Global Climate Change
process of the Intergovernmental Panel on Climate Change (IPCC) in the climate change research community. In particular, they want to show how findings coming out of ESS and communicated through the IPCC create a discourse of hierarchical scale
The AA. argue that the global (Intergovernmental Panel on Climate Change) IPCC sea-level values should be replaced by a suite of regional values, to take into account known processes that cause regional changes in sea-surface topography
. Quantification of these processes, which include gravitational adjustments of the ocean surface and nearshore ocean-density changes, requires the use of numerical ocean and geophysical models. These 2 additional mechanisms are not included in IPCC assessments
This report briefly reviews the IPCC Fourth Assessment Report (AR4) sea-level summary and projections for future change. It then considers the development of high-resolution records of relative sea-level (RSL) change which have the potential
The AA. discuss changes of precipitation in China due to growing greenhouse gases using GCM model assuming the IPCC Scenario. An increasing greehouse effect will lead to precipitation increases mostly in north of 30°N for winter, and strongly
This progress report reviews how the understanding of environmental dynamics over extended time periods is now incorporated into science dealing with predictions of future climate change by the IPCC consortium, how possible analogues for a warmer
We present the main features of the international agreements on the climate change : the intergovernmental Panel on Climate Change (IPCC) created in 1988 and the United Nations Framework Convention on Climate Change (Rio, 1992). Recent developments
This paper presents an evaluation of climate simulations by the ocean and atmosphere general circulation models from the IPCC DDC for 2 regions : the Central European area and Poland. The comparisons have concerned air surface temperature
presented by the IPCC, and they determined that mean water consumption should increase by an average over 3% by 2050, but the climate-induced change in consumption varies considerably across census tracts.
L’auteur présente l’état de la question à partir d’une mise au point établie par le dr R. K. Pachari, Président du Groupe intergouvernemental d’experts sur le climat (Giec, Ipcc en anglais). Dans son acception commune, le réchauffement climatique
Dans le contexte du scénario A2 de l'IPCC, en comparaison de la décennie 1975-1984, la plupart des zones climatiques pourraient subir en Chine, d'ici aux années 2035-2044, une translation vers le nord d'au maximum 1,5 à 2° de latitude. L'été serait
Natural disasters, especially weather related disasters have increased dramatically over the past decades. The latest IPCC report of 2007 does not provide an all clear. At the opposite, signs point to severe weather. Only immediate and globally
-use combined scenarios generated from a general circulation model and a dynamic urban growth model. The climate scenarios were based on 2 IPCC SRES emission scenarios and the land-use scenarios were based on 4 economic growth scenarios. The results
A partir d'un modèle unidimensionnel photochimique radiatif, les AA. estiment l'impact des émissions de quelques gaz et de leurs groupes sur l'ozone dans la troposphère et la stratosphère. Dans les calculs on utilise les scénarios IPCC pour la
Si l'on tient compte de l'effet fertilisant du CO2, les simulations effectuées sur la production de riz, de blé et de maïs en Chine en présence des scénarios A2 et B2 de l'IPCC ne laissent pas entrevoir de modification significative pour des
Par référence aux années 1990, et du seul fait du changement climatique, le nombre de dépassements du seuil d'alerte pour l'ozone augmenterait en moyenne de 68 % d'ici aux années 2050, si l'on suit le scénario A2 de l'IPCC. Un tel renforcement de la
L'A. conteste la reconstitution graphique en crosse de hockey de l'évolution climatique entre le 10ème et 19ème siècle, proposée par l'IPCC : une température globalement stable et les années 1990 représentant la décennie la plus chaude. Avec cette