Impact of climate change on mercury concentrations and deposition in the eastern United States

2014 ◽  
Vol 487 ◽  
pp. 299-312 ◽  
Author(s):  
Athanasios G. Megaritis ◽  
Benjamin N. Murphy ◽  
Pavan N. Racherla ◽  
Peter J. Adams ◽  
Spyros N. Pandis
Keyword(s):  
Climate Change ◽  
United States ◽  
Eastern United States ◽  
Impact Of Climate Change

Impact of climate change on storage conditions for major agricultural commodities across the contiguous United States

2020 ◽  
Vol 162 (3) ◽  
pp. 1287-1305
Author(s):  
Kyle Lesinger ◽  
Di Tian ◽  
Courtney P. Leisner ◽  
Alvaro Sanz-Saez
Keyword(s):  
Climate Change ◽  
United States ◽  
Storage Conditions ◽  
Agricultural Commodities ◽  
Impact Of Climate Change

scholarly journals Threshold effects of air pollution and climate change on understory plant communities at forested sites in the eastern United States

2020 ◽  
Vol 262 ◽  
pp. 114351 ◽  
Author(s):  
T.C. McDonnell ◽  
G.J. Reinds ◽  
G.W.W. Wamelink ◽  
P.W. Goedhart ◽  
M. Posch ◽  
...  
Keyword(s):  
Climate Change ◽  
United States ◽  
Air Pollution ◽  
Plant Communities ◽  
Threshold Effects ◽  
Eastern United States ◽  
Understory Plant ◽  
Understory Plant Communities

scholarly journals Strong influence of 2000–2050 climate change on particulate matter in the United States: Results from a new statistical model

2016 ◽  
Author(s):  
Lu Shen ◽  
Loretta J. Mickley ◽  
Lee T. Murray
Keyword(s):  
Climate Change ◽  
United States ◽  
Particulate Matter ◽  
Air Quality ◽  
Statistical Model ◽  
The United States ◽  
Anthropogenic Sources ◽  
Meteorological Variables ◽  
Eastern United States ◽  
Low Cloud

Abstract. We use a statistical model to investigate the effect of 2000–2050 climate change on fine particulate matter (PM2.5) air quality across the contiguous United States. By applying observed relationships of PM2.5 and meteorology to the IPCC Coupled Model Intercomparision Project Phase 5 (CMIP5) archives, we bypass many of the uncertainties inherent in chemistry-climate models. Our approach uses both the relationships between PM2.5 and local meteorology as well as the synoptic circulation patterns, defined as the Singular Value Decomposition (SVD) pattern of the spatial correlations between PM2.5 and meteorological variables in the surrounding region. Using an ensemble of 17 GCMs under the RCP4.5 scenario, we project an increase of ~ 1 μg m−3 in annual mean PM2.5 in the eastern US and a decrease of 0.3–1.2 μg m−3 in the Intermountain West by the 2050s, assuming present-day anthropogenic sources of PM2.5. Mean summertime PM2.5 increases as much as 2–3 μg m−3 in the eastern United States due to faster oxidation rates and greater mass of organic carbon from biogenic emissions. Mean wintertime PM2.5 decreases by 0.3–3 μg m−3 over most regions in United States, likely due to the volatilization of ammonium nitrate. Our approach provides an efficient method to calculate the climate penalty or benefit on air quality across a range of models and scenarios. We find that current atmospheric chemistry models may underestimate or even fail to capture the strongly positive sensitivity of monthly mean PM2.5 to temperature in the eastern United States in summer, and may underestimate future changes in PM2.5 in a warmer climate. In GEOS-Chem, the underestimate in monthly mean PM2.5-temperature relationship in the East in summer is likely caused by overly strong negative sensitivity of monthly mean low cloud fraction to temperature in the assimilated meteorology (~ −0.04 K−1), compared to the weak sensitivity implied by satellite observations (±0.01 K−1). The strong negative dependence of low cloud cover on temperature, in turn, causes the modeled rates of sulfate aqueous oxidation to diminish too rapidly as temperatures rise, leading to the underestimate of sulfate-temperature slopes, especially in the South. Our work underscores the importance of evaluating the sensitivity of PM2.5 to its key controlling meteorological variables in climate-chemistry models on multiple timescales before they are applied to project future air quality.

scholarly journals Threats to Oaks in the Eastern United States: Perceptions and Expectations of Experts

2019 ◽  
Vol 118 (1) ◽  
pp. 14-27
Author(s):  
Anna O Conrad ◽  
Ellen V Crocker ◽  
Xiaoshu Li ◽  
William R Thomas ◽  
Thomas O Ochuodho ◽  
...  
Keyword(s):  
Climate Change ◽  
United States ◽  
Management Practices ◽  
Keystone Species ◽  
Research Priorities ◽  
Survey Method ◽  
Eastern United States ◽  
The Future ◽  
Temporal And Spatial ◽  
Perceptions And Expectations

Abstract Oaks (Quercus spp.) are keystone species in many ecosystems and are ecologically as well as economically valuable. The objective of this study was to gather and evaluate information from a diverse group of oak experts on current and future biotic and abiotic threats to oaks in the eastern United States. Using a Delphi survey method with three iterative surveys, we found that oak decline and climate change were identified as critical current and future threats, respectively, in this region. Focusing on climate change, experts were asked a series of questions to assess its potential future temporal and spatial impact on oaks. With respect to climate change, the majority of experts surveyed believe climate change will manifest gradually, although they were generally uncertain about the geographical distribution of climate change in the future, i.e., the areas where oaks are likely to be impacted by climate change in the future. New/emerging pests and pathogens were seen as the most critical future threat by the third survey round. Results from this study can be used to better inform management practices and research priorities for ensuring resilient oak resources for the future.

scholarly journals Community‐level responses to climate change in forests of the eastern United States

2020 ◽  
Vol 29 (8) ◽  
pp. 1299-1314 ◽  
Author(s):  
Jonathan A. Knott ◽  
Michael A. Jenkins ◽  
Christopher M. Oswalt ◽  
Songlin Fei
Keyword(s):  
Climate Change ◽  
United States ◽  
Community Level ◽  
Eastern United States

Introduction

2021 ◽  
pp. 1-4
Keyword(s):  
Climate Change ◽  
United States ◽  
Southern United States ◽  
Harris County ◽  
Surrounding Area ◽  
Industrial Accidents ◽  
Impact Of Climate Change ◽  
The World ◽  
The City

Harris County, Texas, the site of the Robert Wood Johnson Foundation’s (RWJF’s) fourth annual Sharing Knowledge conference in 2019, has been tested. Hurricane Harvey, the catastrophic storm that struck just over 18 months earlier, was one of the worst weather-related events ever faced by the city of Houston and its surrounding area, and the continuing impact of climate change suggests it will not be the last. The city’s 2.3 million residents have also dealt with industrial accidents, borne the brunt of devastating floods, and provided refuge to people fleeing other disaster areas in the southern United States and to immigrants from around the world....

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