Paper Search Console

Home Search Page Alphabetical List About Contact

Journal Title

Title of Journal: Clim Dyn

Search In Journal Title:

Abbravation: Climate Dynamics

Search In Journal Abbravation:



Search In Publisher:



Search In ISSN:
Search In Title Of Papers:

Global effect of irrigation and its impact on the onset of the Indian summer monsoon

Authors: Matthieu Guimberteau, Katia Laval, Alain Perrier, Jan Polcher,

Publish Date: 2011/12/06
Volume: 39, Issue:6, Pages: 1329-1348
PDF Link


In a context of increased demand for food and of climate change, the water consumptions associated with the agricultural practice of irrigation focuses attention. In order to analyze the global influence of irrigation on the water cycle, the land surface model ORCHIDEE is coupled to the GCM LMDZ to simulate the impact of irrigation on climate. A 30-year simulation which takes into account irrigation is compared with a simulation which does not. Differences are usually not significant on average over all land surfaces but hydrological variables are significantly affected by irrigation over some of the main irrigated river basins. Significant impacts over the Mississippi river basin are shown to be contrasted between eastern and western regions. An increase in summer precipitation is simulated over the arid western region in association with enhanced evapotranspiration whereas a decrease in precipitation occurs over the wet eastern part of the basin. Over the Indian peninsula where irrigation is high during winter and spring, a delay of 6 days is found for the mean monsoon onset date when irrigation is activated, leading to a significant decrease in precipitation during May to July. Moreover, the higher decrease occurs in June when the water requirements by crops are maximum, exacerbating water scarcity in this region. A significant cooling of the land surfaces occurs during the period of high irrigation leading to a decrease of the land-sea heat contrast in June, which delays the monsoon onset.Simulations were performed using computational facilities of the Institut du Développement et des Ressources en Informatique Scientifique (IDRIS, CNRS, France). The authors would like to thank the European Union project WATCH (WATer and global CHange, contract No. 036946) for the financial support. Great thanks to Camille Risi (LMD, CNRS, France) for her useful comments on the English writing.The canopy resistance (including both bulk stomatal and leaf aerodynamic resistances), \(r_{sto_{v}}\) (s/m) (Eq. 4), is derived by Lohammar et al. (1980) from Jarvis (1976). It depends on the net solar radiation (R net SW  (W/m2)) and the water vapor deficit of the air (δ c  (kg/m3)) which are limiting factors for transpiration, and it is inversely proportional to the LAI.Maximal water loss by crops, computed to estimate irrigation requirement, is derived from the effective transpiration parametrization under stress-free conditions, called potential transpiration, T v pot  (kg/m2/s). In these conditions, soil water is not limiting (\(U_{s_{v}}=1\) in Eq. 3), the stomatal opening is no longer dependant on net solar radiation and water deficit of the air is zero (respectively \(\frac{R_{net}^{SW}+R_{0}}{R_{net}^{SW}}=1\) and δ c  = 0 in Eq. 4). The stomatal resistance of the foliage is thus minimal (respectively \(r_{sto_{v}=}r_{sto_{v}}^{min}\)).



Search In Abstract Of Papers:
Other Papers In This Journal:

  1. The impact of perturbations to ocean-model parameters on climate and climate change in a coupled model
  2. Evaluation of large-scale meteorological patterns associated with temperature extremes in the NARCCAP regional climate model simulations
  3. How well do reanalyses represent the southern African precipitation?
  4. Real-time multi-model decadal climate predictions
  5. Oxygen stable isotope ratios from British oak tree-rings provide a strong and consistent record of past changes in summer rainfall
  6. Future impact of anthropogenic sulfate aerosol on North Atlantic climate
  7. A regional response in mean westerly circulation and rainfall to projected climate warming over Tasmania
  8. How does coldwave frequency in china respond to a warming climate?
  9. Characterizing the zonally asymmetric component of the SH circulation
  10. The impact of the MJO on clusters of wintertime circulation anomalies over the North American region
  11. A new atmospheric proxy for sea level variability in the southeastern North Sea: observations and future ensemble projections
  12. Dynamical and thermodynamical analysis of the South China Sea winter cold tongue
  13. Benefit of convection permitting climate model simulations in the representation of convective precipitation
  14. Projection of future climate change conditions using IPCC simulations
  15. Enhanced albedo feedback in North Africa from possible combined vegetation and soil-formation processes
  16. Tropical Pacific internal atmospheric dynamics and resolution in a coupled GCM
  17. A framework for investigating large-scale patterns as an alternative to precipitation for downscaling to local drought
  18. Sensitivity of the southern annular mode to greenhouse gas emission scenarios
  19. Biases and improvements in three dynamical downscaling climate simulations over China
  20. Global effect of irrigation and its impact on the onset of the Indian summer monsoon

Search Result:

Help video to use 'Paper Search Console'