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| Open AccessDirect effects dominate responses to climate perturbations in grassland plant communities
Environmental change can have indirect effects on populations by altering the outcome of competitive interactions. Here, Chu et al. show that although direct effects dominate the responses of grassland species to climate perturbations, indirect effects could be greater among species with smaller niche differences.
- Chengjin Chu
- , Andrew R. Kleinhesselink
- & Peter B. Adler
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| Open AccessBiological and physical controls in the Southern Ocean on past millennial-scale atmospheric CO2 changes
Direct proxy evidence for the many explanations for past millennial-scale atmospheric CO2 changes remains scarce. Here, the authors show that changes in the efficiency of respired carbon storage in the deep Southern Ocean were linked to variations in atmospheric CO2over the last 65,000 years.
- Julia Gottschalk
- , Luke C. Skinner
- & Claire Waelbroeck
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| Open AccessLocal biomass burning is a dominant cause of the observed precipitation reduction in southern Africa
Black carbon aerosols in the atmosphere absorb solar radiation and affect the hydrological cycle. Here, the authors show that local aerosol emissions from biomass burning activities are a main cause of observed decline in southern African dry season precipitation over the last century.
- Øivind Hodnebrog
- , Gunnar Myhre
- & Bjørn H. Samset
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| Open AccessThe impact of climate change on photovoltaic power generation in Europe
Renewables are key for abating climate change, but also potentially vulnerable to it. Here, the authors show that the power supply from a well-developed European fleet of photovoltaic installations may undergo decreases during the 21st century, but with limited changes in amplitude and temporal stability.
- Sonia Jerez
- , Isabelle Tobin
- & Martin Wild
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| Open AccessEnhanced light absorption by mixed source black and brown carbon particles in UK winter
Uncertainties in the absorptive properties of black and brown carbon particles limit our understanding of their warming potential. Following an extensive field campaign, Liuet al. report that the magnitude of warming is dependent on particle coatings, which vary due to source and photochemical aging.
- Shang Liu
- , Allison C. Aiken
- & André S. H. Prévôt
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Persistent drying in the tropics linked to natural forcing
Accurate forecasting of tropical precipitation is dependent on our understanding of the hydrological cycle. Here, the authors present a speleothem-derived record of Mesoamerican precipitation variability since the 1930s, and show that multi-decadal declines in rainfall coincide with major volcanic eruptions.
- Amos Winter
- , Davide Zanchettin
- & Hai Cheng
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Article
| Open AccessClimate-induced variations in global wildfire danger from 1979 to 2013
Global wildfires can have severe societal implications and economic cost and have been strongly linked to climate. Here, the authors analyse daily global wildfire trends and show that, during the past 35 years, wildfire season length has increased by 18.7% over more than a quarter of the Earth’s surface.
- W. Matt Jolly
- , Mark A. Cochrane
- & David M. J. S. Bowman
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| Open AccessRegional climate impacts of a possible future grand solar minimum
Regional surface climate response to a future decline in solar activity remains uncertain. Here, via numerical simulations, the authors show that a return to Maunder Minimum-like lows by 2050 could lead to some areas of significantly reduced surface warming via modulation of the North Atlantic Oscillation.
- Sarah Ineson
- , Amanda C. Maycock
- & Richard A. Wood
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| Open AccessChange in ocean subsurface environment to suppress tropical cyclone intensification under global warming
Changing atmospheric and oceanic environments under the effects of a warming climate are likely to influence the intensity of tropical cyclones. Here, the authors analyse 22 state-of-the-art climate models and show that future subsurface ocean environments might further suppress cyclone intensification.
- Ping Huang
- , I. -I Lin
- & Rong-Hui Huang
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| Open AccessLong-term decline in grassland productivity driven by increasing dryness
How primary production is influenced by climatic forcing has not been tested in most ecosystems. Here, the authors study a four-decade record of grassland production and find a sustained decline in above-ground net primary production attributable to increased aridity from declining late-summer rainfall.
- E. N. J. Brookshire
- & T. Weaver
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Coupled reversion and stream-hyporheic exchange processes increase environmental persistence of trenbolone metabolites
Cattle growth hormone metabolites found in agricultural runoff are primarily removed from surface waters by photodegradation. Here, Ward et al. develop a model of stream transport, finding reversion in perpetually dark hyporheic zones increases environmental persistence of these endocrine disruptors.
- Adam S. Ward
- , David M. Cwiertny
- & Colleen C. Brehm
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Bidecadal North Atlantic ocean circulation variability controlled by timing of volcanic eruptions
While present in palaeoclimate records, the drivers behind 20-year climate variability are poorly understood. Here, using climate simulations and in situand palaeo data, the authors present a possible link between volcanic eruptions, Great Salinity Anomalies and the Atlantic overturning circulation.
- Didier Swingedouw
- , Pablo Ortega
- & Roland Séférian
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| Open AccessTropical cyclone rainfall area controlled by relative sea surface temperature
The rainfall rate of tropical cyclones is expected to increase under a warmer climate, yet likely changes in rainfall area remain unknown. Here, the authors combine satellite data and model simulations and show that rainfall area is dependent on relative sea surface temperatures.
- Yanluan Lin
- , Ming Zhao
- & Minghua Zhang
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| Open AccessReconciling spatial and temporal soil moisture effects on afternoon rainfall
The sign of soil moisture–precipitation feedback has been strongly debated. Here, the authors show that rain tends to fall where soils are drier than their surroundings, but on days with overall wet and heterogeneous conditions, explaining the apparent contradictions between recent studies.
- Benoit P. Guillod
- , Boris Orlowsky
- & Sonia I. Seneviratne
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| Open AccessTropical Atlantic temperature seasonality at the end of the last interglacial
The last interglacial has been suggested as a test bed for models developed for future climate prediction, yet many climatic parameters remain unknown. Here, the authors present a precisely dated fossil coral and show that temperature seasonality in the southern Caribbean Sea 118 ka was similar to today.
- Thomas Felis
- , Cyril Giry
- & Sander R. Scheffers
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Impacts of El Niño Southern Oscillation on the global yields of major crops
El Niño Southern Oscillation affects seasonal climate worldwide; however, it is uncertain how it impacts global crop yields. Here, the authors present a global assessment of the impacts of El Niño Southern Oscillation on crop productivity and show large differences among regions, crop types and cropping technologies.
- Toshichika Iizumi
- , Jing-Jia Luo
- & Toshio Yamagata
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Regional climate model simulations indicate limited climatic impacts by operational and planned European wind farms
Wind power installations have boomed across Europe in recent decades, yet the potentially negative impact of wind farms on climate remains largely untested. Vautard et al. parameterize operational and planned European wind farms in a regional climate model and show limited regional-scale climate impacts.
- Robert Vautard
- , Françoise Thais
- & Paolo Michele Ruti
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The European functional tree of bird life in the face of global change
Species response to environmental change can have an impact on community assemblages and ecosystem functioning. Here, the authors assess the combined impact of regional land use and climate change on bird functional diversity and find that global changes may lead to uniform species assemblages across Europe.
- Wilfried Thuiller
- , Samuel Pironon
- & Niklaus E. Zimmermann
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| Open AccessHuman deforestation outweighs future climate change impacts of sedimentation on coral reefs
Forest cover up-river influences the sediments reaching coral reefs, but how this relationship is affected by future climate change is not clear. In a study of the Malagasy coral reefs, Maina et al.find that regional land-use management is more important than mediating climate change for reducing reef sedimentation.
- Joseph Maina
- , Hans de Moel
- & Jan E. Vermaat