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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Updated analyses of temperature and precipitation extreme indices since the beginning of the twentieth century: The HadEX2 dataset
Journal of Geophysical Research Atmospheres, Volume 118, No. 5, Year 2013
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Description
In this study, we present the collation and analysis of the gridded land-based dataset of indices of temperature and precipitation extremes: HadEX2. Indices were calculated based on station data using a consistent approach recommended by the World Meteorological Organization (WMO) Expert Team on Climate Change Detection and Indices, resulting in the production of 17 temperature and 12 precipitation indices derived from daily maximum and minimum temperature and precipitation observations. High-quality in situ observations from over 7000 temperature and 11,000 precipitation meteorological stations across the globe were obtained to calculate the indices over the period of record available for each station. Monthly and annual indices were then interpolated onto a 3.75° × 2.5° longitude-latitude grid over the period 1901-2010. Linear trends in the gridded fields were computed and tested for statistical significance. Overall there was very good agreement with the previous HadEX dataset during the overlapping data period. Results showed widespread significant changes in temperature extremes consistent with warming, especially for those indices derived from daily minimum temperature over the whole 110 years of record but with stronger trends in more recent decades. Seasonal results showed significant warming in all seasons but more so in the colder months. Precipitation indices also showed widespread and significant trends, but the changes were much more spatially heterogeneous compared with temperature changes. However, results indicated more areas with significant increasing trends in extreme precipitation amounts, intensity, and frequency than areas with decreasing trends. © 2013. American Geophysical Union. All Rights Reserved.
Authors & Co-Authors
Donat, Markus G.
Australia, Sydney
Unsw Sydney
Alexander, L. V.
Australia, Sydney
Unsw Sydney
Australia, Sydney
Arc Centre of Excellence for Climate System Science
Yang, Hanbo
Australia, Sydney
Unsw Sydney
Durre, Imke
United States, Asheville
Noaa National Climatic Data Center
Vose, Russell S.
United States, Asheville
Noaa National Climatic Data Center
Dunn, J. H.Robert
United Kingdom, Exeter
Met Office
Willett, Kate M.
United Kingdom, Exeter
Met Office
Aguilar, Enric
Spain, Tarragona
Universitat Rovira I Virgili
India, Manola Brunet
Spain, Tarragona
Universitat Rovira I Virgili
United Kingdom, Norwich
University of East Anglia
Caesar, John
United Kingdom, Exeter
Met Office
Hewitson, Bruce C.
South Africa, Cape Town
University of Cape Town
Jack, Chris David
South Africa, Cape Town
University of Cape Town
Klein-Tank, Albert M.G.
Netherlands, De Bilt
Royal Netherlands Meteorological Institute
Krüger, Andries C.
South Africa, Pretoria
South African Weather Service
Marengo, José António
Brazil, Sao Jose Dos Campos
Instituto Nacional de Pesquisas Espaciais
Peterson, Thomas C.
United States, Asheville
Noaa National Climatic Data Center
Renom, Madeleine
Uruguay, Montevideo
Universidad de la Republica
Oria Rojas, Clara
Peru, Lima
Servicio Nacional de Meteorología e Hidrología Del Perú
Rusticucci, Matilde M.
Argentina, Buenos Aires
Universidad de Buenos Aires
Salinger, Jim
United States, Palo Alto
Stanford University
Elrayah, A. S.
Sudan, Khartoum
Sudan Meteorological Authority
Sekele, S. S.
South Africa, Pretoria
South African Weather Service
Srivastava, Arvind Kumar
India, Pune
India Meteorological Department, Pune
Trewin, Blair C.
Australia, Melbourne
Bureau of Meteorology Australia
Villarroel, Claudia
Unknown Affiliation
Vincent, Lucie A.
Canada, Gatineau
Environment and Climate Change Canada
Zhai, Panmao
China, Beijing
Chinese Academy of Meteorological Sciences
Zhang, Xuebin
Canada, Gatineau
Environment and Climate Change Canada
Kitching, S.
Australia, Sydney
Arc Centre of Excellence for Climate System Science
United Kingdom, Newcastle
Newcastle University
Statistics
Citations: 1,089
Authors: 29
Affiliations: 20
Identifiers
Doi:
10.1002/jgrd.50150
e-ISSN:
21698996
Research Areas
Environmental