Filters: Tags: AIR TEMPERATURE (X) > partyWithName: Jay R Alder (X)

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Data release for Applying the Community Ice Sheet Model to evaluate PMIP3 LGM climatologies over the North American ice sheets The data release consists of a single NetCDF file with results from a suite of ice sheet model simulations. We ran with Community Ice Sheet Model (CISM2) with input from models used in the Palaeoclimate Modelling Intercomparison 3 (PMIP3). The NetCDF file contains output from model year 50,000 for a limited number of variables to keep the file size reasonably small. This subset of variables are the ones we focus our analysis and paper on. Categories: Data Release - Revised; Tags: North America, USGS Science Data Catalog (SDC), air temperature, climatology, glaciation, All tags... mathematical simulation, precipitation (atmospheric), Fewer tags CMIP6-LOCA2 threshold and extreme event metric projections from 1950-2100 for the Contiguous United States Projections of extreme event metrics and threshold exceedances are produced by analyzing the Climate Model Intercomparison Program Phase 6 Localized Constructed Analogs (CMIP6-LOCA2) data set. The primary daily temperature and precipitation data are summarized to 36 annual metrics and 4 monthly metrics. This data set includes output from 27 GCMs for the period 1950-2100 under ssp245, ssp370, and ssp585 scenarios for the Contiguous United States with partial coverage in Mexico and Canada. To support climate research within and outside the Department of Interior these data are distributed in a variety of formats: individual model grids for all years, gridded climatologies (1961-1990, 1971-2000, 1981-2010, 1991-2020,... Tags: CMIP6, Climatology, Contiguous United States, Extremes, LOCA2, All tags... Threshold Exceedance, USGS Science Data Catalog (SDC), air temperature, precipitation (atmospheric), Fewer tags Data release for Ice and ocean constraints on early human migrations into North America along the Pacific coast Founding populations of the first Americans likely occupied parts of Beringia during the Last Glacial Maximum (LGM) (1). The timing, pathways, and modes of their southward transit remain unknown, but blockage of the interior route by North American ice sheets between ~26-14 cal kyr BP (ka) favors a coastal route during this period. Using models and paleoceanographic data from the North Pacific, we identify climatically favorable intervals when humans could have plausibly traversed the Cordilleran coastal corridor during the terminal Pleistocene. Model simulations suggest that northward coastal currents strengthened during the LGM and at times of enhanced freshwater input, making southward transit by boat more difficult.... Tags: Climatology, USGS Science Data Catalog (SDC), air temperature, ocean circulation, ocean currents, All tags... sea surface temperature, Fewer tags