@ElectronicSource{CoelhoFerrStepStei::ExToAn,
abstract = "This paper reviews and introduces new tools based on Extreme Value
Theory (EVT) for the analysis of extreme weather and climate
events in gridded datasets. The methods allow exploratory analysis
of spatial patterns of extremes, the investigation of
relationships between extremes and potentially influential factors
(e.g. ENSO), the analysis of temporal clustering of extremes, and
also the study of teleconnection patterns of extremes (spatial
extreme dependence). The methods are illustrated using Northern
Hemisphere monthly mean gridded temperatures for June-July-August
(JJA) summers from 1870 to 2005. All analyses are focused on hot
extreme temperature events defined by observed temperatures
exceeding a pre-defined threshold. Results show that hot extreme
temperatures have larger variability in extratropical continental
regions than in oceanic and tropical regions. Extreme temperature
variability over tropical and oceanic regions is found to be
driven mainly by local processes rather than by ENSO atmospheric
teleconnections. Over extratropical continental regions extreme
temperature variability is found to be affected by ENSO. Larger
variability of extreme temperatures is found during La Niņa
conditions over most of North America, some regions in eastern
Europe and Scandinavia. Larger variability of extreme temperatures
is found during El Niņo conditions over most of Asia, Russia, and
western Europe. The Atlantic and East Pacific oceans show higher
temporal clustering of extreme events than continental regions,
most likely due to the longer memory of oceans compared to
continents. Extreme temperatures over central Europe during August
are found to be related to extreme temperatures in the west North
Atlantic.",
address = "S{\~a}o Jos{\'e} dos Campos",
affiliation = "Instituto Nacional de Pesquisas Espaciais (INPE), Centro de
Previs{\~a}o de Tempo e Estudos Clim{\'a}ticos(CPTEC). and NCAS-
Climate, Department of Meteorology, University of Reading,
Reading, UK and Department of Meteorology, University of Reading,
Reading, UK and Nansen Environmental and Remote Sensing Center,
Bergen, Norway",
author = "Coelho, Caio Augusto dos Santos and Ferro, Christopher A. T. and
Stephenson, David B. and Steinskog, D. J.",
keywords = "extreme value theory, EVT, teleconnection patterns, temperatures
extratropical, tropical regions, ENSO, La Niņa.",
language = "en",
lastupdatedate = "2006-11-29",
publisher = "Instituto and Nacional and de and Pesquisas and Espaciais",
ibi = "sid.inpe.br/mtc-m17@80/2006/11.28.14.11",
url = "http://urlib.net/ibi/sid.inpe.br/mtc-m17@80/2006/11.28.14.11",
targetfile = "v1.pdf",
title = "Exploratory tools for the analysis of extreme weather and climate
events in gridded datasets",
typeofmedium = "On-line",
urlaccessdate = "04 maio 2024"
}