Interannual Coupling between Summertime Surface Temperature and Precipitation over Land: Processes and Implications for Climate Change - Université Pierre et Marie Curie Accéder directement au contenu
Article Dans Une Revue Journal of Climate Année : 2015

Interannual Coupling between Summertime Surface Temperature and Precipitation over Land: Processes and Implications for Climate Change

Alexis Berg
  • Fonction : Auteur
Benjamin R. Lintner
  • Fonction : Auteur
Kirsten Findell
  • Fonction : Auteur
Sonia I. Seneviratne
Bart van Den Hurk
  • Fonction : Auteur
David M. Lawrence
  • Fonction : Auteur
Sergey Malyshev
Arndt Meier
  • Fonction : Auteur
Pierre Gentine

Résumé

Widespread negative correlations between summertime-mean temperatures and precipitation over land regions are a well-known feature of terrestrial climate. This behavior has generally been interpreted in the context of soil moisture atmosphere coupling, with soil moisture deficits associated with reduced rainfall leading to enhanced surface sensible heating and higher surface temperature. The present study revisits the genesis of these negative temperature precipitation correlations using simulations from the Global Land Atmosphere Coupling Experiment phase 5 of the Coupled Model Intercomparison Project (GLACE-CMIP5) multimodel experiment. The analyses are based on simulations with five climate models, which were integrated with prescribed (noninteractive) and with interactive soil moisture over the period 1950-2100. While the results presented here generally confirm the interpretation that negative correlations between seasonal temperature and precipitation arise through the direct control of soil moisture on surface heat flux partitioning, the presence of widespread negative correlations when soil moisture atmosphere interactions are artificially removed in at least two out of five models suggests that atmospheric processes, in addition to land surface processes, contribute to the observed negative temperature precipitation correlation. On longer time scales, the negative correlation between precipitation and temperature is shown to have implications for the projection of climate change impacts on near-surface climate: in all models, in the regions of strongest temperature precipitation anticorrelation on interannual time scales, long-term regional warming is modulated to a large extent by the regional response of precipitation to climate change, with precipitation increases (decreases) being associated with minimum (maximum) warming. This correspondence appears to arise largely as the result of soil moisture atmosphere interactions.
Fichier principal
Vignette du fichier
[15200442 - Journal of Climate] Interannual Coupling between Summertime Surface Temperature and Precipitation over Land Processes and Implications for Climate Change.pdf (17.43 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-01195806 , version 1 (12-11-2021)

Licence

Paternité

Identifiants

Citer

Alexis Berg, Benjamin R. Lintner, Kirsten Findell, Sonia I. Seneviratne, Bart van Den Hurk, et al.. Interannual Coupling between Summertime Surface Temperature and Precipitation over Land: Processes and Implications for Climate Change. Journal of Climate, 2015, 28 (3), pp.1308-1328. ⟨10.1175/JCLI-D-14-00324.1⟩. ⟨hal-01195806⟩
203 Consultations
50 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More