11 Works

ABoVE: Burn Severity of Soil Organic Matter, Northwest Territories, Canada, 2014-2015

N.H.F. French, J.A. Graham, L.L. Bourgeau-Chavez, S. Grelick & E. Whitman
This dataset provides maps at 30-m resolution of landscape surface burn severity (surface litter and soil organic layers) from the 2014-2015 fires in the Northwest Territories and Northern Alberta, Canada. The maps were derived from Landsat 8 Operational Land Imager/Thermal Infrared Sensor (OLI/TIRS) imagery and two separate multiple linear regression models trained with field data; one for the Plains and a second for the Shield ecoregion. Field observations were used to estimate area burned in...

ABoVE: Year-Round Soil CO2 Efflux in Alaskan Ecosystems, Version 2

C. Minions, S. Natali, J.D. Watts, S. Ludwig & D. Risk
This dataset provides soil-surface carbon dioxide (CO2) efflux derived from measurements of soil respiration with forced diffusion (FD) chambers. Soil Respiration Stations (SRS) were installed at 11 boreal and tundra sites along a broad S-N transect starting from near Fairbanks in interior Alaska and extending to Atqasuk in northern Alaska. Each SRS measures soil respiration and ambient atmospheric CO2 concentrations with a forced diffusion (FD) chamber to derive soil CO2 flux. The SRS also measures...

Topsoil Erosion, SOC, Topography, and Economic Losses, Midwestern US, 2003-2018

E. Thaler, I. Larsen & Q. Yu
This data set provides county- and state-level estimates of topsoil loss, estimates of the areal extent of agricultural land planted with soybean and corn, and economic losses associated with decreased crop productivity, resulting from topsoil loss in the Corn Belt region of the Midwestern U.S. Mean topsoil loss estimates are derived from satellite analysis of topsoil loss and the association of the loss with topographic curvature at 28 sites throughout the Corn Belt region.

CMS: Great Basin Pinyon-Juniper Biomass, 2001-2016

S.K. Filippelli, M.J. Falkowski, A.T. Hudak & P.A. Fekety
These maps contain remote sensing-based estimates of live aboveground biomass of pinyon-juniper trees within the Great Basin of the USA. Estimates of biomass were based on a linear relationship with canopy cover developed from field data in Nevada and Idaho. Canopy cover was estimated from remote sensing by using annual composites of Landsat imagery, which were temporally segmented with the LandTrendr algorithm, along with biologically-relevant climate variables, and topographic indices in a Random Forest regression...

Snowmelt Timing Maps Derived from MODIS for North America, Version 2, 2001-2018

D. O'Leary III, D.K. Hall, M. Medler, R. Matthews & A. Flower
This data set provides snowmelt timing maps (STMs), cloud interference maps, and a map with the count of calculated snowmelt timing values for North America. The STMs are based on the Moderate Resolution Imaging Spectroradiometer (MODIS) standard 8-day composite snow-cover product MOD10A2 collection 6 for the period 2001-01-01 to 2018-12-31. The STMs were created by conducting a time-series analysis of the MOD10A2 snow maps to identify the DOY of snowmelt on a per-pixel basis. Snowmelt...

ABoVE: Distribution Maps of Wildland Fire Fuel Components across Alaskan Tundra, 2015

J. He, T.V. Loboda, L. Jenkins & D. Chen
This dataset provides maps of the distribution of three major wildland fire fuel types at 30 m spatial resolution covering the Alaskan arctic tundra, circa 2015. The three fuel components include woody (evergreen and deciduous shrubs), herbaceous (sedges and grasses), and nonvascular species (mosses and lichens). Multi-seasonal and multispectral mosaics were first developed at 30 m resolution using Landsat 8 surface reflectance data collected from 2013 to 2017. The spectral information from Landsat mosaics was...

ABoVE: Environmental Conditions During Fall Moose Hunting Seasons, Alaska, 2000-2016

D.R.N. Brown, T. Hasbrouck, T.J. Brinkman, G. Stout, K. Kielland & E. Trochim
This dataset provides daily and annual air temperature, river water level, and leaf drop dates coincident with the moose (Alces alces) hunting season (September) for the area surrounding the rural communities of Nulato, Koyukuk, Kaltag, Galena, Ruby, Huslia, and Hughes in interior Alaska, USA, over the period 2000-2016. The main objective of the study was to assess how the environmental conditions impacted the success of hunters who rely on moose as a subsistence resource.

Field data and fractional cover maps of vegetation across tundra fire gradients, AK

G. Frost, L.B. Saperstein, P.R. Nelson, D.P. Paradis & J.D. Rochester
Field data were collected 18-31 July 2017 in Arctic tundra across gradients of wildfire history in the Izaviknek Hills, central Yukon-Kuskokwim Delta, Alaska. The field data include: 1. Vegetation species-composition and cover collected using a point-intercept sampling approach 2. Vegetation heights (maximum height of shrubs and herbs) 3. Leaf Area Index (LAI) measurements 4. Permafrost thaw-depth measurements 5. Soil moisture measurements 6. Soils and geomorphology descriptions 7. Spatial locations of field plots 8. Landscape photographs

Thermokarst Lake Littoral Zone Diffusive Methane Fluxes, Fairbanks, AK

C. Elder, P. Hanke, K.W. Anthony, D.R. Thompson, C.E. Miller & A.K. Thorpe
This dataset is comprised of 200 diffusive methane fluxes collected from the littoral zones of two thermokarst lakes in the Goldstream Valley north of Fairbanks, AK. The data was collected to verify spatial patterns in methane flux (exponential decay with distance from water) detected by NASA's Next Generation Airborne Visible/Infrared Imaging Spectrometer (AVIRIS-NG). The data was collected during the July 2018 using a mobile closed chamber technique where chamber air was recirculated through an LGR...

Particulate iodine concentrations and associated ion fractions for ATom-1 and ATom-2

J.L. Jimenez, P. Campuzano-Jost, D.A. Day, B.A. Nault & J.C. Schroder
This dataset consists of aircraft HR-AMS measurements of particulate iodine taken on the NASA ATom 1 and 2 missions

Disturbance History and Forest Biomass from Landsat for Six US Sites, 1985-2014

W.B. Cohen, Z. Yang, S.P. Healey & H.E. Andersen
This dataset provides derived disturbance history and predicted annual forest biomass maps at 30-m resolution for six selected Landsat scenes across the Conterminous United States (CONUS) for the period 1985-2014. The focus sites are in the following states: Colorado, Maine, Minnesota, Oregon, Pennsylvania, and South Carolina. These scenes were selected to represent a wide range of forest ecosystems, which ensured that a diversity of forest type groups and forest change processes (e.g., harvest, fire, insects,...

Registration Year

  • 2020
    11

Resource Types

  • Collection
    11