73 Works

ABoVE: Hyperspectral Imagery from AVIRIS-NG, Alaskan and Canadian Arctic, 2017-2018

C.E. Miller, R.O. Green, D.R. Thompson, A.K. Thorpe, M. Eastwood, I.B. Mccubbin, W. Olson-duvall, M. Bernas, C.M. Sarture, S. Nolte, L.M. Rios, M.A. Hernandez, B.D. Bue & S.R. Lundeen
This dataset provides Level 1 radiance and Level 2 surface reflectance measured by the Airborne Visible/Infrared Imaging Spectrometer-Next Generation (AVIRIS-NG) instrument during flights over the Arctic-Boreal Vulnerability Experiment (ABoVE) domain between June and August 2017 and again in July and August 2018. AVIRIS-NG measures reflected radiance at 5-nanometer (nm) intervals in the visible to shortwave infrared spectral range between 380 and 2510 nm. Measurements are radiometrically and geometrically calibrated and provided at approximately 5-meter spatial...

ABoVE: Directory of Field Sites Associated with 2017 ABoVE Airborne Campaign

E.E. HOY, P. GRIFFITH, C.E. MILLER & ABOVE SCIENCE TEAM
This dataset provides a listing of the ~6,700 field sites used in planning the ABoVE Airborne Campaign (AAC) for 2017. The sites included point, polygon, and line locations that were used in determining the 2017 AAC flight paths. We intend this compilation to assist investigators in understanding the flight line choices and as a method for investigators to identify ground locations used in the airborne campaign. Data users may also search for the underlying data...

AfriSAR: Canopy Cover and Vertical Profile Metrics Derived from LVIS, Gabon, 2016

H. TANG, J. ARMSTON, S. HANCOCK, M. HOFTON, J.B. BLAIR, T. FATOYINBO & R.O. DUBAYAH
This dataset includes footprint-level canopy structure products derived from data collected using NASA's Land, Vegetation, and Ice Sensor (LVIS) during flights over five forested sites in Gabon during February and March 2016. Three types of canopy structure information are included for each flight: 1) vertical profiles of canopy cover fraction in 1-meter bins, 2) vertical profiles of plant area index (PAI) in 1-meter bins, and 3) footprint summary data of total recorded energy, leaf area...

Airborne Data Visualizer

ORNL DAAC
The goal of the Airborne Data Visualizer (ADV) is to allow users to explore in-situ atmospheric gas measurements from multiple airborne missions through a single tool. The ADV consists of a web application, based in R Shiny, with menus for selecting individual flight dates and variables to view on a map or on a series of plots. Users can compare the geographic scope of measurements from multiple missions and determine which dataset meets their needs....

Walker Branch Watershed: 15-minute and Daily Stream Discharge and Annual Runoff

Patrick J. Mulholland & Natalie A. Griffiths

ABoVE: Year-round Soil CO2 Efflux in Alaskan Ecosystems

C. MINIONS, S. NATALI, S. LUDWIG & J. WATTS
This dataset provides soil surface CO2 efflux derived from measurements of soil respiration using forced diffusion (FD) chambers. Measurement systems were established at seven selected sites within diverse ecosystems along a S-N transect from near Fairbanks in interior Alaska to Toolik Lake in northern Alaska. The soil respiration forced diffusion (FD) chambers are fully automated, low-powered systems that measured soil surface CO2 efflux and ambient atmospheric CO2 concentrations using an eosGP CO2 gas analyzer and...

Atom: Global Modeled and CAFS Measured Cloudy and Clear Sky Photolysis Rates, 2016

S.R. HALL, K. ULLMANN, M.J. PRATHER, C.M. FLYNN, L.T. MURRAY, A.M. FIORE, G. CORREA, S.A. STRODE, S.D. STEENROD, J.-F. LAMARQUE, J. GUTH, B. JOSSE, J. FLEMMING, V. HUIJNEN, N.L. ABRAHAM & A.T. ARCHIBALD
This dataset provides (1) the results from nine global chemistry-climate or chemistry-transport models that estimated gridded values of atmospheric photolytic rates (J values) for ozone (O3), designated J-O1D, and nitrogen dioxide (NO2), designated J-NO2, under cloudy and clear sky scenarios. Each model produced global 4-D fields (latitude by longitude by pressure for 24 hours) for one day in mid-August 2016 (nominally) of results from two simulations: first using their standard treatment of clouds (all sky...

ABoVE: CO2 and CH4 Fluxes and Meteorology at Flux Tower Sites, Alaska, 2015-2017

W. OECHEL & A. KALHORI
This dataset provides CO2 and CH4 fluxes and meteorological parameters from five eddy covariance (EC) tower sites located at Barrow (three sites), Atqasuk (ATQ) and Ivotuk (IVO), Alaska. These locations form a 300-km north-south transect across Alaska's North Slope. Flux measurements include CO2, CH4, and H2O fluxes plus sensible and latent heat fluxes. Meteorological data include air temperature, wind speed, rain, soil temperature, PAR, radiation, soil water content, RH, ground heat fluxes, and air pressure....

ATom: Aircraft Flight Track and Navigational Data

S.C. WOFSY & ATom Science Team
This dataset provides flight track and aircraft navigation data from the NASA Atmospheric Tomography Mission (ATom). Flight track information is available for the four ATom campaigns: ATom-1, ATom-2, ATom-3, and ATom-4. Each ATom campaign consists of multiple individual flights and flight navigational information is recorded in 10-second intervals. Data available for each flight includes research flight number, date, and start and stop time of each 10-second interval. In addition, latitude, longitude, altitude, pressure and temperature...

ABoVE: NDVI Trends across Alaska and Canada from Landsat, 1984-2012

J. JU & J.G. MASEK
This dataset provides the summer NDVI trend and trend significance for the period 1984-2012 over Alaska and Canada. The NDVI were calculated per-pixel from all available peak-summer 30-m Landsat 5 and 7 surface reflectance data for the period. NDVI time series were assembled for each 30-m land location (i.e., non-water, non-snow), from observations that were unaffected by clouds as indicated by data-quality masks and following additional processing to remove anomalous NDVI values. A simple linear...

A Concise Experiment Plan for the Arctic-Boreal Vulnerability Experiment

ABOVE SCIENCE DEFINITION TEAM
This document presents the Concise Experiment Plan for NASA's Arctic-Boreal Vulnerability Experiment (ABoVE) to serve as a guide to the Program as it identifies the research to be conducted under this study. Research for ABoVE will link field-based, process-level studies with geospatial data products derived from airborne and satellite remote sensing, providing a foundation for improving the analysis and modeling capabilities needed to understand and predict ecosystem responses and societal implications. The ABoVE Concise Experiment...

ATom: Black Carbon Mass Mixing Ratios from ATom-1 Flights

J.M. KATICH, J.P. SCHWARZ, K. FROYD, B. WEINZIERL, M. DOLLNER, T.P. BUI, C.S. CHANG & J.M. DEAN-DAY
This dataset provides black carbon (BC) mass mixing ratios (in units of ng BC / kg air) measured during NASA's Atmospheric Tomography (ATom)-1 flight campaign during July and August 2016. The BC ratios were measured by the Single Particle Soot Photometer (SP2) and Particle Analysis by Laser Mass Spectrometry (PALMS) instruments. Included here are also associated latitude, longitude, altitude, and the timestamp of each measurement. We also include data from the cloud aerosol spectrometer (CAS)...

AfriSAR: Mondah Forest Tree Species, Biophysical, and Biomass Data, Gabon, 2016

T. FATOYINBO, S.S. SAATCHI, J. ARMSTON, J. POULSEN, S. MARSELIS, N. PINTO, L.J.T. WHITE & K. JEFFERY
This dataset provides plot-level estimates of basal area, aboveground biomass, number of trees, maximum tree height, and basal-area-weighted wood specific gravity that were derived from observations of nearly 6,700 individual trees including tree family, species, DBH, the height of each tree, and their x, y location within 25 x 25 m subplots. These field data were collected from 15 1-hectare plots located across the Mondah Forest of Gabon as part of the AfriSAR Campaign in...

NACP MsTMIP: Global 0.5-degree Model Outputs in Standard Format, Version 1.0

D.N. HUNTZINGER, C.R. SCHWALM, Y. WEI, R.B. COOK, A.M. MICHALAK, K. SCHAEFER, A.R. JACOBSON, M.A. ARAIN, P. CIAIS, J.B. FISHER, D.J. HAYES, M. HUANG, S. HUANG, A. ITO, A.K. JAIN, H. LEI, C. LU, F. MAIGNAN, J. MAO, N.C. PARAZOO, C. PENG, S. PENG, B. POULTER, D.M. RICCIUTO, H. TIAN … & B. TAO
This data set provides global gridded estimates of carbon, energy, and hydrologic fluxes between the land and atmosphere from 15 Terrestrial Biosphere Models (TBMs) in a standard format. Model estimates are at monthly and yearly time steps for the period 1900 to 2010, with a spatial resolution of 0.5 degree x 0.5 degree globally, excluding Antarctica.

Green Vegetation Fraction High-Resolution Maps for Selected US Tidal Marshes, 2015

L. BALLANTI & K.B. BYRD
This dataset provides 30m resolution maps of the fraction of green vegetation within tidal marshes for six estuarine regions of the conterminous United States: Cape Cod, MA; Chesapeake Bay, MD; Everglades, FL; Mississippi Delta, LA; San Francisco Bay, CA; and Puget Sound, WA. Maps were derived from a 1m classification of 2013 to 2015 National Agriculture Imagery Program (NAIP) images as tidal marsh green vegetation, non-vegetation, and open water. Using this high-resolution map, the percent...

MODIS and VIIRS Land Product Subsets RESTful Web Service

ORNL DAAC
The MODIS/VIIRS Web Service provides data access capabilities for several MODIS Collection 6 and VIIRS (Version 001) land products. The web service provides data access functions for users to execute on their local computing resources. The web service is built upon the ORNL DAAC's MODIS/VIIRS Global Subsetting and Visualization Tool that provides customized subsets and visualization of land products for any land location on earth. With the web service users can retrieve land product subsets...

ABoVE: Dall Sheep Track Sinking Depths, Snow Depth, Hardness, and Density, 2017

K.J. SIVY, A.W. NOLIN, C.L. COSGROVE & L.R. PRUGH
This dataset contains Dall sheep (Ovis dalli dalli) hoof sinking depths in snow tracks, and snow depth, hardness, and density measurements in snow pits adjacent to the tracks. Snow measurements were collected between March 19-22, 2017 at sites on Jaeger Mesa in the Wrangell Mountains (WRST), Alaska. Estimated sheep age classes and track site coordinates are also provided.

Global Hydrologic Soil Groups (HYSOGs250m) for Curve Number-Based Runoff Modeling

C.W. ROSS, L. PRIHODKO, J. ANCHANG, S. KUMAR, W. JI & N.P. HANAN
This dataset - HYSOGs250m - represents a globally consistent, gridded dataset of hydrologic soil groups (HSGs) with a geographical resolution of 1/480 decimal degrees, corresponding to a projected resolution of approximately 250-m. These data were developed to support USDA-based curve-number runoff modeling at regional and continental scales. Classification of HSGs was derived from soil texture classes and depth to bedrock provided by the Food and Agriculture Organization soilGrids250m system.

High-Resolution Shrub Biomass and Uncertainty Maps, Toolik Lake Area, Alaska, 2013

H.E. GREAVES, L. VIERLING, J. EITEL, N. BOELMAN, T. MAGNEY, C. PRAGER & K. GRIFFIN
This dataset contains estimates for aboveground shrub biomass and uncertainty at high spatial resolution (0.80-m) across three research areas near Toolik Lake, Alaska. The estimates for August of 2013 were generated and mapped using Random Forest modeling with input variables of optimized LiDAR-derived canopy volume and height, mean NDVI from 4-band RGB color and near-IR orthophotographs, and harvested biomass data. Uncertainty in the final shrub biomass maps was quantified by producing separate maps showing the...

ABoVE: Rain-on-Snow Frequency and Distribution during Cold Seasons, Alaska, 2003-2016

C.G. PAN, P.B. KIRCHNER, J.S. KIMBALL, Y. KIM & J. DU
This dataset provides maps of rain-on-snow (ROS) events across Alaska for the individual months of November to March 2002-2011 and November to March 2012-2016, and annual water year summary maps for 2003-2011 and 2013-2016. ROS events were defined as changes in passive microwave (PM) detection in surface snow wetness and isothermal states induced by atmospheric processes often associated with winter rainfall. The data are summations of the number of days with ROS events per pixel...

AfriSAR: Rainforest Canopy Height Derived from PolInSAR and Lidar Data, Gabon

M. DENBINA, M. SIMARD, B.V. RIEL, B.P. HAWKINS & N. PINTO
This dataset provides estimates of forest canopy height and canopy height uncertainty for study areas in the Pongara National Park and the Lope National Park, Gabon. Two canopy height products are included: 1) Canopy height was derived from multi-baseline Polarimetric Interferometric Synthetic Aperture Radar (PolInSAR) data using an inversion of the random volume over ground (RVoG) model and Kapok, an open source Python library. 2) Canopy height was derived from a fusion of PolInSAR and...

Walker Branch Watershed: Hourly, Daily, and Annual Precipitation

Patrick J. Mulholland & Natalie A. Griffiths

Aboveground Biomass High-Resolution Maps for Selected US Tidal Marshes, 2015

K.B. BYRD, L. BALLANTI, N. THOMAS, D. NGUYEN, J.R. HOLMQUIST, M. SIMARD & L. WINDHAM-MYERS
This dataset provides maps of aboveground tidal marsh biomass (g/m2) at 30m resolution for six estuarine regions of the conterminous United States: Cape Cod, MA; Chesapeake Bay, MD, Everglades, FL; Mississippi Delta, LA; San Francisco Bay, CA; and Puget Sound, WA. Estuarine and palustrine emergent tidal marsh areas were based on a 2010 NOAA Coastal Change Analysis Program (C-CAP) map. Aboveground biomass maps were generated from a random forest model driven by Landsat vegetation indices...

ABoVE: Wildfire Carbon Emissions and Burned Plot Characteristics, NWT, CA, 2014-2016

X.J. WALKER, B.M. ROGERS, J.L. BALTZER, S.R. CUMMINGS, N.J. DAY, S.J. GOETZ, J.F. JOHNSTONE, M.R. TURETSKY & M.C. MACK
This dataset provides estimates of wildfire carbon emissions and uncertainties at 30-m resolution, and measurements collected at burned and unburned field plots from the 2014 wildfire sites near Yellowknife, Northwest Territories (NWT), Canada. Field data were collected at 211 burned plots in 2015 and include site characteristics, tree cover and species, basal area, delta normalized burn ratio (dNBR), plot characteristics, soil carbon, and carbon combusted. Data were collected at 36 unburned plots with characteristics similar...

ATom: Simulated Data Stream for Modeling ATom-like Measurements

M.J. PRATHER, C.M. FLYNN, A. FIORE, G. CORREA, S.A. STRODE, S.D. STEENROD, L.T. MURRAY & J.-F. LAMARQUE
This dataset provides a set of 14,880 tropospheric air parcels along a north-south transect down the dateline taken from a high resolution model and the reactivities for those parcels as calculated from six global 3-D atmospheric chemistry models. The transect data completely specify all major chemical constituents needed for the reactivities and are a test-bed for the ATom aircraft mission measurements collected between 2016 and 2018. The models were initialized with the chemical species as...

Registration Year

  • 2018
    73

Resource Types

  • Collection
    69
  • Dataset
    4