1,600 Works

Coastal Wetland Elevation and Carbon Flux Inventory with Uncertainty, USA, 2006-2011

J.R. Holmquist, L. Windham-Myers, B. Bernal, K.B. Byrd, S. Crooks, M.E. Gonneea, N. Herold, S.H. Knox, K. Kroeger, J. Mccombs, P.J. Megonigal, L. Meng, J.T. Morris, A.E. Sutton-grier, T. Troxler & D. Weller
This dataset provides maps of coastal wetland carbon and methane fluxes and coastal wetland surface elevation from 2006 to 2011 at 30 m resolution for coastal wetlands of the conterminous United States. Total coastal wetland carbon flux per year per pixel was calculated by combining maps of wetland type and change with soil, biomass, and methane flux data from a literature review. Uncertainty in carbon flux was estimated from 10,000 iterations of a Monte Carlo...

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...

SAFARI 2000 Annual Soil Respiration Data (Raich and Schlesinger 1992)

J.W. RAICH & W.H. SCHLESINGER
The data set consists of a southern African subset of the "Global Annual Soil Respiration Data (Raich and Schlesinger 1992)" data set. The data file is in ASCII text format and contains four observations. This data set is a compilation of soil respiration rates (g C m -2 yr -1) from terrestrial and wetland ecosystems reported in the literature prior to 1992. These rates were measured in a variety of ecosystems to examine rates of...

PROVE MQUALS Reflectance at Jornada Experimental Range, New Mexico, 1997

A.R. HUETE
This study utilized low flying, aircraft-based radiometers for optical characterization of top-of-the-canopy reflectance at Jornada Experimental Range in New Mexico during the Prototype Validation Experiment (PROVE) in May 1997. MQUALS refers to a light aircraft radiometric package for MODLAND Quick Airborne Looks (MQUALS). The objective was to examine the usefulness of low-flying aircraft for Moderate Resolution Imaging Spectroradiometer (MODIS) validation of land products. This project was the responsibility of the MODIS Land (MODLAND) validation group....

Atmospheric CFC-11, CFC-12, CFC-113, CC14 and SF6 Histories.

J.L. Bullister

LBA Regional Monthly Climatology for the 20th Century (New et al.)

M. NEW, M. HULME & P.D. JONES
This data set characterizes mean monthly surface climate over the study area of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) in South America (i.e., longitude 85 deg to 30 deg W, latitude 25 deg S to 10 deg N) during nearly all of the 20th Century. The data set is gridded at 0.5-degree latitude/longitude resolution and includes seven variables: precipitation, mean temperature, diurnal temperature range, wet-day frequency, vapour pressure, cloud cover, and ground-frost frequency....

BOREAS/Agriculture Canada Central Saskatchewan Vector Soils Data

N/A
This data set consists of GIS layers that describe the soils of the BOREAS SSA. These original data layers were submitted as vector data in ARC/INFO EXPORT format. These data also include the soil name and soil layer files, which provide additional information about the soils. There are three sets of attributes that include information on the primary, secondary, and tertiary soil type within each polygon. Thus, there is a total of nine main attributes...

LBA Regional Land Cover from AVHRR, 1-Degree, 1987 (Defries and Townshend)

R.S. DEFRIES & J.R.G. TOWNSHEND
This data set consists of a subset for the study area of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) in South America (i.e., longitude 85 deg to 30 deg W, latitude 25 deg S to 10 deg N) of the University of Maryland (UMD) 1-degree Global Land Cover product in ASCII GRID and binary image formats.The UMD 1-degree Global Land Cover product was produced by researchers at the Laboratory for Global Remote Sensing Studies...

AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, MOISST, 2012-2015

E. CHAPIN, S. FLORES, L. HARCKE, B.P. HAWKINS, S. HENSLEY, T.R. MICHEL, R.J. MUELLERSCHOEN, J.G. SHIMADA, W.W. TUNG & C. VEERAMACHANENI
This data set provides level 1 (L1) polarimetric radar backscattering coefficient (sigma-0), multilook complex, polarimetrically calibrated, and georeferenced data products from the Airborne Microwave Observatory of Subcanopy and Subsurface (AirMOSS) radar instrument collected over the MOISST site in Oklahoma. The AirMOSS radar is a P-band (UHF) fully polarimetric synthetic aperture radar (SAR) currently operating in the 420-440 MHz band designed to measure root-zone soil moisture (RZSM) and is flown on a NASA Gulfstream-III aircraft. Flight...

AirMOSS: L4 Modeled Net Ecosystem Exchange (NEE), Continental USA, 2012-2014

A.A. ALI, K. ZHANG, A. Antonarakis & P.R. MOORCROFT
This data set provides Level 4 estimates of Net Ecosystem Exchange (NEE) of CO2 across the conterminous USA at a spatial resolution of 50 km. Modeled estimates are provided at hourly and monthly temporal resolutions, from January 2012 through October 2014. The AirMOSS L4 Regional NEE data were produced by the Ecosystem Demography Biosphere Model (ED2) augmented by the AirMOSS-derived L2/3 root zone soil moisture data as an additional input. The AirMOSS soil moisture data...

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...

Global Ocean Repeat Hydrography Study: pH, Total Alkalinity, and Total CO2 Measurements in the Arctic Ocean During the R/V Healy Cruise ARC01 (9 August - 12 October, 2015): Technical Report

F.J. Millero, R.J. Woosley, A.R. Margolin & F. Huang

NWS Daily Climatology Data: 1977 (SNF)

F.G. HALL, K.F. HUEMMRICH, D.E. STREBEL, S.J. GOETZ, J.E. NICKESON & K.D. WOODS
Weather data were collected by the National Weather Service in International Falls, Minnesota. International Falls is about 80 miles from the SNF, but the weather data is representative of the area. Total solar insolation measurements were made at Fall Lake Dam in Winton, Minn. by Prof. Donald Baker of the Department of Soil Science at the University of Minnesota, St. Paul. Insolation values were measured using a Yellow Springs solar cell calibrated against an Eppley...

ABoVE: Cumulative Annual Burned Area, Circumpolar High Northern Latitudes, 2001-2015

T.V. LOBODA, J.V. HALL, A.H. HALL & V.S. SHEVADE
This dataset provides annual cumulative end-of-season burned area in circumpolar high northern latitudes (HNL) above 60 degrees for the years 2001-2015. The data were generated using the Arctic Boreal Burned Area (ABBA) product (a MODIS-based algorithm). The product is delivered in two spatial domains: circumpolar and a North American subset for areas above 60 degree north.

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...

GLOBAL OCEAN DATA ANALYSIS PROJECT (GLODAP): RESULTS AND DATA

Oak Ridge National Laboratory Environmental Sciences Division

BOREAS TE-02 Foliage Respiration Data

M.G. RYAN & M. LAVIGNE
The BOREAS TE-02 team collected several data sets in support of its efforts to characterize and interpret information on the respiration of the foliage, roots, and wood of boreal vegetation. This data set contains measurements of foliar respiration conducted in the NSA during the growing season of 1994.

ABoVE: Burn Severity, Fire Progression, and Field Data, NWT, Canada, 2015-2016

L.L. BOURGEAU-CHAVEZ, S. ENDRES, L. JENKINS, M. BATTAGLIA, E. SEROCKI & M. BILLMIRE
This data set provides a fire progression map for year 2015 and measures of burn severity and vegetation community biophysical data collected from areas that were burned by wildfires in 2014 and 2015 in the Northwest Territories, Canada. Field data collected in 2016 include an estimate of burn severity, woody seedling/sprouting data, soil moisture, peat depth, thaw depth, and vegetation cover for selected sites.

NPP Grassland: Central Plains Experimental Range (SGS), USA, 1939-1990, R1

D. URESK, P.L. SIMS & J.L. DODD
This data set records the productivity of a semiarid shortgrass prairie steppe located in the Central Plains Experimental Reserve (CPER)/Pawnee National Grassland in north-central Colorado. There are nine data files (.txt). Four files contain measurements of monthly dynamics of harvested above-ground plant biomass, one file each for untreated, irrigated, fertilized, and irrigated + fertilized plots for the period 1970 to 1975. The fifth file contains annual above-ground NPP estimates for the untreated plot for the...

Pre-ABoVE: Remotely Sensed Active Layer Thickness, Prudhoe Bay, Alaska, 1992-2000

L. LIU, K. SCHAEFER, T. SCHAEFER, A. CHEN, A. GUSMEROLI, A. PARSEKIAN, S. PANDA, H.A. ZEBKER & T. ZHANG
Active layer thickness (ALT) is a critical parameter for monitoring the status of permafrost that is typically measured at specific locations using probing, in situ temperature sensors, or other ground-based observations. The thickness of the active layer is the average annual thaw depth, in permafrost areas, due to solar heating of the surface. This data set includes the mean Remotely Sensed Active Layer Thickness (ReSALT) over years 1992 to 2000 for an area near Prudhoe...

RLC AVHRR-Derived Land Cover, Former Soviet Union, Far East, 1-km, 1990

T.A. STONE & P. SCHLESINGER

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