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Future Fire Impacts on Smoke Concentrations, Visibility, and Health in the Contiguous United States
Published 2020“…We find that PM2.5 concentrations will decrease overall in the contiguous United States (CONUS) due to decreasing anthropogenic emissions (total PM2.5 decreases by 3% in Representative Concentration Pathway [RCP] 8.5 and 34% in RCP4.5 by 2100), but increasing fire-related PM2.5 (fire-related PM2.5 increases by 55% in RCP4.5 and 190% in RCP8.5 by 2100) offsets these benefits and causes increases in total PM2.5 in some regions. …”
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Developing a climatology for dry thunderstorms and associated environmental conditions in the contiguous United States
Published 2024“…Here, lightning flashes and precipitation amounts for the contiguous United States from 2012-2022 are analyzed, comparing topography, relative humidity, seasonality, hour of the day, and other variables to identify patterns in dry thunderstorms. …”
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Contrail coverage over the United States before and during the COVID-19 pandemic
Published 2022“…We present contrail coverage estimates for the years 2018, 2019 and 2020 for the contiguous United States, derived by developing and applying a deep learning algorithm to over 100 000 satellite images. …”
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The Lexicocalorimeter: Gauging public health through caloric input and output on social media
Published 2017“…We show that for Twitter, our naive measures of “caloric input”, “caloric output”, and the ratio of these measures are all strong correlates with health and well-being measures for the contiguous United States. Our caloric balance measure in many cases outperforms both its constituent quantities; is tunable to specific health and well-being measures such as diabetes rates; has the capability of providing a real-time signal reflecting a population’s health; and has the potential to be used alongside traditional survey data in the development of public policy and collective self-awareness. …”
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SMAP Soil Moisture Change as an Indicator of Drought Conditions
Published 2018“…The change in soil moisture estimated from the Soil Moisture Active Passive (SMAP) satellite observations was compared with the United States Drought Monitor (USDM) and the Standardized Precipitation Index (SPI) over the contiguous United States (CONUS). The results indicated that the soil moisture change over 13-week and 26-week intervals is able to capture the changes in drought intensity levels in the USDM, and the change over a four-week interval correlated well with the one-month SPI values. …”
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Climate's watermark in the geometry of stream networks
Published 2018“…Here we analyze nearly one million digitally mapped river junctions throughout the contiguous United States and show that branching angles vary systematically with climatic aridity. …”
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Effects of Greenhouse Gas Mitigation on Drought Impacts in the United States
Published 2016“…The method begins by constructing reduced-form models of the effect of drought on agriculture and reservoir recreation in the contiguous United States. These relationships are then applied to drought projections based on two climate stabilization scenarios and two twenty-first-century time periods. …”
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Observational Evidence that Great Plains Irrigation Has Enhanced Summer Precipitation Intensity and Totals in the Midwestern United States
Published 2016“…As a first step toward attribution of these precipitation changes, a detailed analysis of observed daily summer precipitation frequency and intensity is conducted for the contiguous United States over multiple spatial scales and time periods from 1895 to 2011. …”
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Quantifying and monetizing potential climate change policy impacts on terrestrial ecosystem carbon storage and wildfires in the United States
Published 2016“…This paper develops and applies methods to quantify and monetize projected impacts on terrestrial ecosystem carbon storage and areas burned by wildfires in the contiguous United States under scenarios with and without global greenhouse gas mitigation. …”
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Estimation of Landscape Soil Water Losses from Satellite Observations of Soil Moisture
Published 2018“…This study presents an observation-driven technique to delineate the dominant boundaries and temporal shifts between different hydrologic regimes over the contiguous United States (CONUS). The energy- and water-limited evapotranspiration regimes as well as percolation to the subsurface are hydrologic processes that dominate the loss of stored water in the soil following precipitation events. …”
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Monitoring and Understanding Trends in Extreme Storms: State of Knowledge
Published 2013“…There are no significant multidecadal trends in the areal percentage of the contiguous United States impacted by extreme seasonal snowfall amounts since 1900. …”
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Quantifying and reducing the uncertainties in global contrail radiative forcing
Published 2022“…The contrail energy forcing per unit flown was highest for flights over Western Europe, which was 39% and 66% higher than that for flights over the contiguous United States and South and East Asia, respectively. …”
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Thesis