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Methane Ebullition Hotspot Locations in Frozen Lakes near Fairbanks, Alaska

Submitted by ORNL DAAC Staff on 2021-06-06
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Location of 15 lakes surveyed for methane ebullition hotspots (green points) north of Fairbanks, AK, on October 8, 2014. Inset shows detail of Eagle Lake with locations of 43 hotspots (red points) detected by openings in lake ice.

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Locations and number of methane ebullition hotspots in frozen lakes in the southern portion of the Goldstream Valley and surroundings near Fairbanks, Alaska.

Methane Emissions from Dairy Sources in California

Submitted by ORNL DAAC Staff on 2021-06-06
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Total annual methane emissions in 2019 from dairy farms in California. These values represent the sum of emissions from enteric fermentation and manure management practices. Units are Gg per square kilometer per year. Source: total_CH4_CA_2019.tif

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Estimates of methane (CH4) emissions from dairy farms in California for 2019.

Annual Aboveground Biomass for Boreal Forests of ABoVE Core Domain, 1984-2014

Submitted by ORNL DAAC Staff on 2021-06-06
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Spatial distribution of predicted aboveground biomass (AGB) density averaged over 1984-2014 for the ABoVE Core Study Domain. Ecoregions represent the EPA Level 2 Ecoregion boundaries. Source: Wang et al. (2021)

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Estimated annual AGB density for live woody species in the ABoVE Core Study Domain from 1984-2014.

Version 5 of the Global Soil Respiration Database

Submitted by ORNL DAAC Staff on 2021-06-06
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Locations of SRDB V5 observations combining pre-existing observations from V4 and new observations from Russian and Chinese literature, and literature from other languages (primarily English). Circle size represents sample size at each location. 

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This new version of the Global Soil Respiration Database (SRDB) is a near-universal compendium of published soil respiration (Rs) data.
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Predicted AGB Estimates for Six Selected US Tidal Marshes

Submitted by ORNL DAAC Staff on 2021-05-21
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An area of the Mississippi River Delta (Terrebonne and St. Mary Parishes, LA, USA) showing the largest present-day amount of tidal vegetation biomass in the conterminous US. (Source Louisiana_biomass_2015.tif).

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Aboveground tidal marsh biomass estimates for six estuarine regions of the conterminous United States.

Annual high-resolution estimates of Land Use and Cover from the Mawas research area, Indonesia

Submitted by ORNL DAAC Staff on 2021-05-21
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Land cover maps at 30 m resolution across Mawas, Central Kalimantan, Indonesia in 1994 (left) and 2004 (right).

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Annual land use/cover (LUC) maps at 30 m resolution across Mawas, Central Kalimantan, Indonesia.

New data for MODIS and FLUXNET-derived Global Daily Terrestrial Gross Primary Production

Submitted by ORNL DAAC Staff on 2021-05-21
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Gross primary production from FluxSat v2.0 expressed as carbon (g m-2 d-1) for July 1st, 2019.

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Version 2 of the dataset on satellite- and FLUXNET tower-derived data on daily gross primary production of global vegetation has been released.

UAVSAR P-band polarimetric data from flight lines over Alaska and western Canada, 2017

Submitted by ORNL DAAC Staff on 2021-05-21
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UAVSAR P-band SAR radar swaths over study sites across Alaska, USA, and western Canada for the 2017 ABoVE campaign.

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Level 1 polarimetric radar backscattering coefficient, multi-look complex, polarimetrically calibrated, and georeferenced data products for study sites.