Journal ArticleDOI
A Multiscalar Drought Index Sensitive to Global Warming: The Standardized Precipitation Evapotranspiration Index
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In this article, a new climatic drought index, the standardized precipitation evapotranspiration index (SPEI), is proposed, which combines multiscalar character with the capacity to include the effects of temperature variability on drought assessment.Abstract:
The authors propose a new climatic drought index: the standardized precipitation evapotranspiration index (SPEI). The SPEI is based on precipitation and temperature data, and it has the advantage of combining multiscalar character with the capacity to include the effects of temperature variability on drought assessment. The procedure to calculate the index is detailed and involves a climatic water balance, the accumulation of deficit/surplus at different time scales, and adjustment to a log-logistic probability distribution. Mathematically, the SPEI is similar to the standardized precipitation index (SPI), but it includes the role of temperature. Because the SPEI is based on a water balance, it can be compared to the self-calibrated Palmer drought severity index (sc-PDSI). Time series of the three indices were compared for a set of observatories with different climate characteristics, located in different parts of the world. Under global warming conditions, only the sc-PDSI and SPEI identified an...read more
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Combination of multi-sensor remote sensing data for drought monitoring over Southwest China
Cui Hao,Jiahua Zhang,Fengmei Yao +2 more
TL;DR: In this paper, the authors proposed the optimized meteorological drought index (OMDI) and the optimized vegetation drought index(OVDI) from multi-source satellite data to monitor drought in three bio-climate regions of Southwest China.
Journal ArticleDOI
A Global Gridded Dataset of GRACE Drought Severity Index for 2002–14: Comparison with PDSI and SPEI and a Case Study of the Australia Millennium Drought
TL;DR: A new monthly global drought severity index (DSI) dataset developed from satellite-observed time-variable terrestrial water storage changes from the Gravity Recovery and Climate Experiment (GRACE) is presented in this article.
Journal ArticleDOI
Forests synchronize their growth in contrasting Eurasian regions in response to climate warming
Tatiana A. Shestakova,Emilia Gutiérrez,Alexander V. Kirdyanov,Alexander V. Kirdyanov,J. Julio Camarero,Mar Génova,Anastasia A. Knorre,Juan Carlos Linares,Víctor Resco de Dios,Raúl Sánchez-Salguero,Jordi Voltas +10 more
TL;DR: It is demonstrated how an intensified climatic influence on tree growth during the last 120 y has increased spatial synchrony in annual ring-width patterns within contrasting Eurasian biomes and on broad spatial scales, ultimately leading to unprecedented temporal coherence in ring- width records over wide geographical scales.
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The Exceptional 2018 European Water Seesaw Calls for Action on Adaptation
Andrea Toreti,Alan Belward,Ignacio Perez-Dominguez,Gustavo Naumann,Jürg Luterbacher,Ottmar Cronie,Lorenzo Seguini,Giacinto Manfron,Raúl López-Lozano,Bettina Baruth,Maurits van den Berg,Frank Dentener,Andrej Ceglar,Thomas Chatzopoulos,Matteo Zampieri +14 more
TL;DR: In 2018, Europe experienced concurrent anomalies of b... in the spring/summer growing season, and the most important factors responsible for agricultural productivity variations were temperature and precipitation.
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Estimating drought risk across Europe from reported drought impacts, drought indices, and vulnerability factors
TL;DR: In this paper, the capability of commonly applied drought indices and vulnerability factors to predict annual drought impact occurrence for different sectors and macro regions in Europe and combines information on past drought impacts, drought indices, and vulnerability factor into estimates of drought risk at the pan-European scale.
References
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Climate change 2007: the physical science basis
Susan Solomon,Dahe Qin,Martin R. Manning,Melinda Marquis,Kristen Averyt,Melinda M.B. Tignor,H. L. Miller,Z. Chen +7 more
TL;DR: The first volume of the IPCC's Fourth Assessment Report as mentioned in this paper was published in 2007 and covers several topics including the extensive range of observations now available for the atmosphere and surface, changes in sea level, assesses the paleoclimatic perspective, climate change causes both natural and anthropogenic, and climate models for projections of global climate.
Book
Crop evapotranspiration : guidelines for computing crop water requirements
TL;DR: In this paper, an updated procedure for calculating reference and crop evapotranspiration from meteorological data and crop coefficients is presented, based on the FAO Penman-Monteith method.
The relationship of drought frequency and duration to time scales
TL;DR: The definition of drought has continually been a stumbling block for drought monitoring and analysis as mentioned in this paper, mainly related to the time period over which deficits accumulate and to the connection of the deficit in precipitation to deficits in usable water sources and the impacts that ensue.