Journal ArticleDOI
Global warming and changes in drought
Kevin E. Trenberth,Aiguo Dai,Aiguo Dai,Gerard van der Schrier,Gerard van der Schrier,Philip Jones,Philip Jones,Jonathan Barichivich,Jonathan Barichivich,Keith R. Briffa,Justin Sheffield +10 more
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TLDR
In this article, a commonly used drought index and observational data are examined to identify the cause of these discrepancies, and the authors indicate that improvements in the quality and coverage of precipitation data and quantification of natural variability are necessary to provide a better understanding of how drought is changing.Abstract:
Recent studies have produced conflicting results about the impacts of climate change on drought. In this Perspective, a commonly used drought index and observational data are examined to identify the cause of these discrepancies. The authors indicate that improvements in the quality and coverage of precipitation data and quantification of natural variability are necessary to provide a better understanding of how drought is changing.read more
Citations
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Journal ArticleDOI
The climate hazards infrared precipitation with stations--a new environmental record for monitoring extremes.
Chris Funk,Pete Peterson,Martin Landsfeld,Diego Pedreros,James P. Verdin,Shraddhanand Shukla,Gregory Husak,James Rowland,Laura Harrison,Andrew Hoell,Joel Michaelsen +10 more
TL;DR: The Variable Infiltration Capacity model, a novel blending procedure incorporating the spatial correlation structure of CCD-estimates to assign interpolation weights, is presented and it is shown that CHIRPS can support effective hydrologic forecasts and trend analyses in southeastern Ethiopia.
Journal ArticleDOI
Influence of extreme weather disasters on global crop production
TL;DR: It is shown that droughts and extreme heat significantly reduced national cereal production by 9–10%, whereas the analysis could not identify an effect from floods and extreme cold in the national data, which may help to guide agricultural priorities in international disaster risk reduction and adaptation efforts.
Journal ArticleDOI
On underestimation of global vulnerability to tree mortality and forest die‐off from hotter drought in the Anthropocene
TL;DR: In this article, the authors identify ten contrasting perspectives that shape the vulnerability debate but have not been discussed collectively and present a set of global vulnerability drivers that are known with high confidence: (1) droughts eventually occur everywhere; (2) warming produces hotter Droughts; (3) atmospheric moisture demand increases nonlinearly with temperature during drought; (4) mortality can occur faster in hotter Drought, consistent with fundamental physiology; (5) shorter Drought can become lethal under warming, increasing the frequency of lethal Drought; and (6) mortality happens rapidly
Journal ArticleDOI
The dominant role of semi-arid ecosystems in the trend and variability of the land CO2 sink
Anders Ahlström,Anders Ahlström,Michael R. Raupach,Guy Schurgers,Benjamin Smith,Almut Arneth,Martin Jung,Markus Reichstein,Josep G. Canadell,Pierre Friedlingstein,Atul K. Jain,Etsushi Kato,Benjamin Poulter,Stephen Sitch,Benjamin D. Stocker,Benjamin D. Stocker,Nicolas Viovy,Ying-Ping Wang,Andy Wiltshire,Soenke Zaehle,Ning Zeng +20 more
TL;DR: Using an ensemble of ecosystem and land-surface models and an empirical observation-based product of global gross primary production, it is shown that the mean sink, trend, and interannual variability in CO2 uptake by terrestrial ecosystems are dominated by distinct biogeographic regions.
Journal ArticleDOI
Triggers of tree mortality under drought
Brendan Choat,Timothy J. Brodribb,Craig R. Brodersen,Remko A. Duursma,Rosana López,Rosana López,Belinda E. Medlyn +6 more
TL;DR: This work focuses on the current understanding of tree hydraulic performance under drought, the identification of physiological thresholds that precipitate mortality and the mechanisms of recovery after drought, and the potential application of hydraulic thresholds to process-based models that predict mortality.
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.
Journal ArticleDOI
A Multiscalar Drought Index Sensitive to Global Warming: The Standardized Precipitation Evapotranspiration Index
TL;DR: 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.
BookDOI
Managing the risks of extreme events and disasters to advance climate change adaptation. Special report of the Intergovernmental Panel on Climate Change.
TL;DR: In this paper, a special report on Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation (SREX) has been jointly coordinated by Working Groups I (WGI) and II (WGII) of the Intergovernmental Panel on Climate Change (IPCC).
Journal ArticleDOI
Increasing drought under global warming in observations and models
Aiguo Dai,Aiguo Dai +1 more
TL;DR: In this paper, the authors look at observations and model projections from 1923 to 2010, to test the ability of models to predict future drought conditions, which inspires confidence in their projections of drought.
Journal ArticleDOI
Drought under global warming: a review
TL;DR: Wiley et al. as mentioned in this paper reviewed recent literature on the last millennium, followed by an update on global aridity changes from 1950 to 2008, and presented future aridity is presented based on recent studies and their analysis of model simulations.
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