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Title: Multi-decadal trends in global terrestrial evapotranspiration and its components

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep19124· OSTI ID:1238787
 [1];  [1];  [2];  [1];  [1];  [3];  [4];  [1];  [4];  [5];  [6];  [7]
  1. CSIRO Land and Water, Canberra (Australia)
  2. CSIRO Land and Water, Canberra (Australia); Univ. of New South Wales, Sydney, NSW (Australia)
  3. Chinese Academy of Sciences, Beijing (China)
  4. CSIRO Ocean and Atmosphere, Victoria (Australia)
  5. Univ. of New South Wales, Sydney, NSW (Australia)
  6. VU Univ. Amsterdam (The Netherlands); Ghent Univ., Ghent (Belgium)
  7. Princeton Univ., Princeton, NJ (United States)

In this study, evapotranspiration (ET) is the process by which liquid water becomes water vapor and energetically this accounts for much of incoming solar radiation. If this ET did not occur temperatures would be higher, so understanding ET trends is crucial to predict future temperatures. Recent studies have reported prolonged declines in ET in recent decades, although these declines may relate to climate variability. Here, we used a well-validated diagnostic model to estimate daily ET during 1981–2012, and its three components: transpiration from vegetation (Et), direct evaporation from the soil (Es) and vaporization of intercepted rainfall from vegetation (Ei). During this period, ET over land has increased significantly (p < 0.01), caused by increases in Et and Ei, which are partially counteracted by Es decreasing. These contrasting trends are primarily driven by increases in vegetation leaf area index, dominated by greening. The overall increase in Et over land is about twofold of the decrease in Es. These opposing trends are not simulated by most Coupled Model Intercomparison Project phase 5 (CMIP5) models, and highlight the importance of realistically representing vegetation changes in earth system models for predicting future changes in the energy and water cycle.

Research Organization:
Princeton Univ., NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
FG02-04ER63917
OSTI ID:
1238787
Journal Information:
Scientific Reports, Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 531 works
Citation information provided by
Web of Science

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Response to Comment on “Satellites reveal contrasting responses of regional climate to the widespread greening of Earth” journal June 2018
Separating Vegetation Greening and Climate Change Controls on Evapotranspiration trend over the Loess Plateau journal August 2017
Advances in the Remote Sensing of Terrestrial Evaporation journal May 2019
Analysis of Changes in Reference Evapotranspiration, Pan Evaporation, and Actual Evapotranspiration and Their Influencing Factors in the North China Plain During 1998–2005 journal August 2019
Sensitivity of Evapotranspiration Components in Remote Sensing-Based Models journal October 2018
Evapotranspiration simulations in ISIMIP2a-Evaluation of spatio-temporal characteristics with a comprehensive ensemble of independent datasets text January 2018
The Responses of the Ecosystems in the Tianshan North Slope under Multiple Representative Concentration Pathway Scenarios in the Middle of the 21st Century journal January 2020
Elevated CO 2 did not affect the hydrological balance of a mature native Eucalyptus woodland journal April 2018
Covariation of vegetation and climate constrains present and future T/ET variability journal October 2018
The WACMOS-ET project – Part 2: Evaluation of global terrestrial evaporation data sets journal January 2015
Multi-scale validation of GLEAM evapotranspiration products over China via ChinaFLUX ET measurements journal July 2017
Towards a Long-Term Reanalysis of Land Surface Variables over Western Africa: LDAS-Monde Applied over Burkina Faso from 2001 to 2018 journal March 2019
Evapotranspiration is resilient in the face of land cover and climate change in a humid temperate catchment journal February 2018
The future of Earth observation in hydrology journal January 2017
Long‐term evapotranspiration rates for rainfed corn versus perennial bioenergy crops in a mesic landscape journal November 2019
Evapotranspiration simulations in ISIMIP2a—Evaluation of spatio-temporal characteristics with a comprehensive ensemble of independent datasets journal June 2018
Earth Observations-Based Evapotranspiration in Northeastern Thailand journal January 2019
Water, Energy, and Carbon with Artificial Neural Networks (WECANN): a statistically based estimate of global surface turbulent fluxes and gross primary productivity using solar-induced fluorescence journal January 2017
The WACMOS-ET project – Part 2: Evaluation of global terrestrial evaporation data sets journal January 2016
Changes in Reference Evapotranspiration over Southwest China during 1960–2018: Attributions and Implications for Drought journal November 2019
Use of satellite leaf area index estimating evapotranspiration and gross assimilation for Australian ecosystems: Coupled estimates of ET and GPP journal April 2018
GLEAM v3: satellite-based land evaporation and root-zone soil moisture journal January 2017
Historical Drought Assessment Over the Contiguous United States Using the Generalized Complementary Principle of Evapotranspiration journal July 2019
Partitioning global land evapotranspiration using CMIP5 models constrained by observations journal June 2018
Attribution analysis of actual and potential evapotranspiration changes based on the complementary relationship theory in the Huai River basin of eastern China journal April 2019
Satellites reveal contrasting responses of regional climate to the widespread greening of Earth journal May 2017
Surface Evaporative Capacitance: How Soil Type and Rainfall Characteristics Affect Global-Scale Surface Evaporation text January 2019
Attribution of Flux Partitioning Variations between Land Surface Models over the Continental U.S. journal May 2018
Impacts of climate change on the evaporation and availability of water in small reservoirs in the Brazilian savannah journal January 2020
Evaluating the patterns of spatiotemporal trends of root zone soil moisture in major climate regions in East Asia: Trend of Root Zone Soil Moisture journal August 2017
Towards Estimating Land Evaporation at Field Scales Using GLEAM journal October 2018
ERA-5 and ERA-Interim driven ISBA land surface model simulations : Which one performs better? posted_content April 2018
Characterizing uncertainties in the ESA-CCI land cover map of the epoch 2010 and their impacts on MPI-ESM climate simulations journal November 2018
Evapotranspiration simulations in ISIMIP2a—Evaluation of spatio-temporal characteristics with a comprehensive ensemble of independent datasets text January 2018
Regional Scale analysis of hydro-meteorological variables in Kesinga sub-catchment of Mahanadi Basin, India journal July 2019
Real-time irrigation forecasting for ecological water in artificial wetlands in the Dianchi Basin journal October 2017
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Towards a Long-Term Reanalysis of Land Surface Variables over Western Africa: LDAS-Monde Applied over Burkina Faso from 2001 to 2018 journal February 2019
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Evapotranspiration simulations in ISIMIP2a—Evaluation of spatio-temporal characteristics with a comprehensive ensemble of independent datasets text January 2018
ERA-5 and ERA-Interim driven ISBA land surface model simulations: which one performs better? journal January 2018
Sequential assimilation of satellite-derived vegetation and soil moisture products using SURFEX_v8.0: LDAS-Monde assessment over the Euro-Mediterranean area journal January 2017
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