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RISInsights from a New High-Resolution Drought Atlas for the Caribbean Spanning 1950–2016
Publisher: American Meteorological Society
Abstract: AbstractClimate change is expected to increase the severity and frequency of drought in the Caribbean. Understanding drought variability and its trends is therefore critical for improving resiliency and adaptation capacity ...
The Magnitude of Decadal and Multidecadal Variability in North American Precipitation
Publisher: American Meteorological Society
Abstract: The authors use singular spectrum analysis to investigate the relative magnitude of decadal to multidecadal (D2M) variability in annual and seasonal precipitation anomalies across North America. In most places, decadal ...
Assessing the Risk of Persistent Drought Using Climate Model Simulations and Paleoclimate Data
Publisher: American Meteorological Society
Abstract: rojected changes in global rainfall patterns will likely alter water supplies and ecosystems in semiarid regions during the coming century. Instrumental and paleoclimate data indicate that natural hydroclimate fluctuations ...
Northern Hemisphere Modes of Variability and the Timing of Spring in Western North America
Publisher: American Meteorological Society
Abstract: patial and temporal patterns of variability in spring onset are identified across western North America using a spring index (SI) model based on weather station minimum and maximum temperatures (Tmin and Tmax, respectively). ...
Trends and Natural Variability of Spring Onset in the Coterminous United States as Evaluated by a New Gridded Dataset of Spring Indices
Publisher: American Meteorological Society
Abstract: limate change is expected to modify the timing of seasonal transitions this century, impacting wildlife migrations, ecosystem function, and agricultural activity. Tracking seasonal transitions in a consistent manner across ...
Temperature and Precipitation Variance in CMIP5 Simulations and Paleoclimate Records of the Last Millennium
Publisher: American Meteorological Society
Abstract: AbstractAccurate assessments of future climate impacts require realistic simulation of interannual?century-scale temperature and precipitation variability. Here, well-constrained paleoclimate data and the latest generation ...
Climate Variability, Volcanic Forcing, and Last Millennium Hydroclimate Extremes
Publisher: American Meteorological Society
Abstract: AbstractMultidecadal hydroclimate variability has been expressed as ?megadroughts? (dry periods more severe and prolonged than observed over the twentieth century) and corresponding ?megapluvial? wet periods in many regions ...
A Robust Null Hypothesis for the Potential Causes of Megadrought in Western North America
Publisher: American Meteorological Society
Abstract: AbstractThe western United States was affected by several megadroughts during the last 1200 years, most prominently during the Medieval Climate Anomaly (MCA; 800 to 1300 CE). A null hypothesis is developed to test the ...
The Continuum of Hydroclimate Variability in Western North America during the Last Millennium
Publisher: American Meteorological Society
Abstract: he distribution of climatic variance across the frequency spectrum has substantial importance for anticipating how climate will evolve in the future. Here power spectra and power laws (?) are estimated from instrumental, ...
Dynamical characteristics of drought in the Caribbean from observations and simulations
Publisher: American Meteorological Society
Abstract: Climate models consistently project a significant drying in the Caribbean during climate change, and between 2013–2016 the region experienced the worst multi-year drought in the historical period. Although dynamical ...