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Global Energy and Water Exchanges

Global Energy and Water Exchanges

 

The Global Energy and Water Cycle Exchanges (GEWEX) a core project of the World Climate Research Programme, is dedicated to understanding Earth’s water cycle and energy fluxes at and below the surface and in the atmosphere. We are a network of scientists gathering information on the global water and energy cycles through research, observations, and science activities, which will help to predict changes in the world’s climate.

The International GEWEX Project Office (IGPO) supports these activities by planning meetings, implementing research goals, and producing a quarterly newsletter to keep the GEWEX community informed.

GEWEX coordinates science activities to facilitate research into the global water cycle and interactions between the land and the atmosphere. One of the primary influences on humans and the environments they live in, the global water cycle encompasses the continuous journey of water as it moves between the Earth’s surface, the atmosphere, and beneath the Earth’s surface. Clouds, precipitation, water vapor, surface radiation, aerosols, and other phenomena each play a role in the cycle. Many GEWEX scientists conduct research on those and other elements to help fine-tune our understanding of them and their impact on the climate. GEWEX also points out important gaps in knowledge and implements ways to fix those gaps, whether through new studies, reviews of datasets, gatherings of experts, or other opportunities.

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Recent Submissions

  • Roca, Rémy; Haddad, Ziad S.; Akimoto, Fumie F.; Alexander, Lisa; Behrangi, Ali; Huffman, George; Kato, Seiji; Kidd, Chris; Kirstetter, Pierre-Emmanuel; Kubota, Takuji; Kummerow, Chris; L’Ecuyer, Tristan; Levizzani, Vincenzo; Maggioni, Viviana; Massari, Christian; Masunaga, Hirohiko; Schröder, Marc; Tapiador, Francisco J.; Turk, Francis J.; Utsumi, Nobuyuki (World Climate Research Programme, 2021)
    This report reviews the current state of precipitation products, and includes assessments of sub-daily global satellite precipitation products, discussions of various climate applications of precipitation products, and ...
  • Haddad, Ziad S.; Turk, Francis J.; Utsumi, Nobuyuki; Kirstetter, Pierre-Emmanuel (World Climate Research Programme, 2021)
    Level-3 “sub-daily global merged satellite precipitation products” are typically reported on a fixed rectangular latitude-longitude grid at high spatial and temporal resolution (respectively 0.1º and ~0.5 hour). This section ...
  • Kirstetter, Pierre-Emmanuel (World Climate Research Programme, 2021)
    The critical importance of accurate water flux estimates for science and applications explains the large body of verification analyses focusing on precipitation estimates. Very few are implemented at the relevant scales ...
  • Kidd, Chris; Maggioni, Viviana (World Climate Research Programme, 2021)
    A major activity of the International Precipitation Working Group (IPWG) is the verification, validation and intercomparison of precipitation products to enable product developers and users to continually monitor and assess ...
  • Roca, Rémy; Kato, Seiji; L’Ecuyer, Tristan (World Climate Research Programme, 2021)
    Energy and water budget closure has recently been extensively used to assess the consistency of precipitation products with various other terms of the water and energy budget. Most efforts are focused on water closure and ...
  • Tapiador, Francisco J. (World Climate Research Programme, 2021)
    This chapter describes the role of satellite precipitation datasets in the analysis of climate variability and trends. Two major applications are explored, namely the validation of the variability in the statistical moments ...
  • Tapiador, Francisco; Levizzani, Vincenzo (World Climate Research Programme, 2021)
    This chapter reviews the use of satellite-derived precipitation datasets to validate climate models, with an emphasis in quality control and normalization. Two checklists are provided: one with the facts regarding the major ...
  • Masunaga, Hirohiko; Akimoto, Fumie F.; Kubota, Takuji; Kummerow, Chris; Schröder, Marc (World Climate Research Programme, 2021)
    Observational datasets of global precipitation are widely used for a range of climate applications. The precipitation products, however, are not strictly a “true” representation of nature, but have their own uncertainties ...
  • Roca, Rémy; Masunaga, Hirohiko; Alexander, Lisa (World Climate Research Programme, 2021)
    The availability of numerous gridded precipitation products and the importance of the question of extreme precipitation have led to a number of new findings. Over land, this intercomparison generally emphasizes that global ...
  • Huffman, George; Kirstetter, Pierre-Emmanuel (World Climate Research Programme, 2021)
    Modern precipitation products provide fine resolution precipitation estimates by combining estimates from many individual high-quality satellite sensors and by using approximations to fill numerous gaps in the mosaics of ...
  • Maggioni, Viviana; Massari, Christian (World Climate Research Programme, 2021)
    Although in the recent past numerous attempts have been made to develop error models of satellite precipitation products, several issues limit their use in applications. First off, the majority of these approaches is based ...
  • Behrangi, Ali (World Climate Research Programme, 2021)
    Besides traditional sensors used to estimate precipitation amount and distribution, several other Earth-observing sensors can provide valuable insights about precipitation quantity. Here, we show how observation of mass ...
  • Kidd, Chris (World Climate Research Programme, 2021)
    Satellites within the current precipitation constellation are old, with many missions beyond their designed operational lifetime. It is therefore crucial that there is a concerted program of new satellites and sensors to ...
  • Unknown author (World Climate Research Programme, 2021)
    This list contains the acronyms used in The Joint IPWG/GEWEX Precipitation Analysis along with their definitions.
  • Polcher, Jan; Gulizia, Carla; Bahar, Faten Attig; Rabanal, Valentina; YESS Executive Committee; Guimond, Julia; Zeng, Yijian; Verhoef, Anne; Or, Dani; Cuntz, Matthias; Gudmundsson, Lukas; Weihermueller, Lutz; Kollet, Stefan; Vanderborght, Jan; Vereecken, Harry; Polcher, Jan; International GEWEX Project Office; Hartogensis, Oscar; Cuxart, Joan; Ek, Michael; Findell, Kirsten; Verhoef, Anne (International GEWEX Project Office, 2021-05)
  • Stephens, Graeme; van Oevelen, Peter; Gupta, Hoshin; Maddock, Thomas III; Zeng, Xubin; Redelsperger, Jean-Luc; Couvreux, Fleur; Bouniol, Dominique; Hourdin, Frederic; Galarneau, Thomas J. Jr.; Su, Zhongbo; Zeng, Yijian; Zhao, Hong; Lv, Shaoning; Wen, Jun; Scipal, Klaus; Roca, Rémy; L’Ecuyer, Tristan; Nazemi, Ali; Dominguez, Francina; Cuxart, Joan; Takayabu, Izuru; Rasmussen, Roy; Nakakita, Eiichi; Prein, Andreas; Kawase, Hiroaki; Watanabe, Shun-Ichi; Adachi, Sachiho A.; Takemi, Tetsuya; Yamaguchi, Kosei; Osakada, Yukari; Wu, Ying-Hsin (2021-02)