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STV Workshop seeks community input

2017-2027 Decadal Survey Report Cover

Cover image of the 2017-2027 Decadal Survey, “Thriving on Our Changing Planet: A Decadal Strategy for Earth Observations from Space.”

The NASA Surface Topography and Vegetation (STV) Incubation Study will hold its first community workshop on July 9, 2020.

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Remote Sensing and Invasive Species

Graph of research publications over time.

Searching for the term remote sensing and words related to invasive species (invasive, nonnative, exotic, or nonindigenous) in Google Scholar reveals an increasing number of publications each year using these terms.

A new Earthdata article describes how researchers are using remote sensing to map invasive species.

Comparative Soil Organic Carbon for Mexico and USA

Map of soil organic carbon across the USA and Mexico.

Soil organic carbon (SOC) for 0-30 cm topsoil layer in kg SOC/m2 at 250-m resolution across Mexico and the conterminous USA (CONUS) for the period 1991-2010.

Two sets of estimated soil organic carbon and uncertainties are available at a 250 m resolution.

LiDAR Derived Aboveground Biomass for Northwestern USA Forests

Map of sampling locations.

The locations of the 176 lidar collection areas (light green polygons) acquired between 2002 and 2016.

Aboveground biomass was derived from forest inventory data and lidar imagery.

Surveying the Ecological Effects of Fire on Alaska's Yukon-Kuskokwim Delta

Map of Cover according to Plant Functional Types

Vegetation point-intercept (VPI) any-hit cover metric data were combined with Landsat imagery to develop fractional maps of any-hit cover for four aggregated plant functional types (PFTs); shrubs bryophytes, lichen, and herbs for the upland tundra area of the Y-K Delta, Alaska. VPI data were collected from plots in areas burned in 1971, 1985, 2005, and 2015.

Ecological field data and maps of vegetation cover spanning gradients of fire history in upland tundra are available from the Arctic-Boreal Vulnerability Experiment (ABoVE).

ATom Compiles Flask Data from 2009 to 2018

Map and graph of airborne flask sample locations.

Horizontal (left) and vertical (right) distribution of airborne flask sample locations identified as being of stratospheric origin. Thin dashed black lines on the map illustrate the flight tracks of all 9 campaigns of the 3 airborne projects. Symbols indicate the campaigns during which the stratospheric samples were collected, and colors show the potential temperature at which the sample was taken.

A new dataset from the Atmospheric Tomography Mission compiles measurements of mean age of air.

Topsoil & Agricultural Economic Losses

Map of study area for dataset.

Study area in the Midwestern US with study site locations and extent of analysis. The study area was limited to the spatial extent of LiDAR topographic data (gray hillshade). Squares represent the 28 sites, a total of 210 km2, that were selected for having plowed, bare soil.

A soil organic carbon index and remote sensing data were used to estimate erosion in Midwestern USA.

WAVeTrends: Trends in Woody and Herbaceous Vegetation

Map of vegetation change in West Africa.

Concurrent woody and herbaceous vegetation changes between the 1982-1991 and 2004-2013 decades of the Sudano-Sahel region of Africa. (A) Map of vegetation change categories. (B) Chart showing the conceptual position and the relative abundance of each category in a 2-D space.

Vegetation change data spanning the West African Sudano-Sahel region is now available.

Boreal Forest Biomass and Soil Metrics at Burned Sites

Map of burned areas across portions of North America.

Field sites, ecoregions, and total area burned (millions of hectares; Mha) in each of the ecoregions in the study domain over time. Grey dotted line in the inset represents the simple linear regression, with red shading for the 95% confidence intervals, of burned area for all ecoregions combined. Analyses were completed using the field site groupings, located within the six ecoregions defined by the EPA Level II Ecoregions of North America.

Burned forest plot data is available from the Arctic-Boreal Vulnerability Experiment (ABoVE).

Recent NASA Article Highlights Daymet

Input weather stations are mapped onto a DEM across North America.

Each black dot on this digital elevation map (DEM) represents a surface weather station in continental North America providing Daymet data in 2010. Additional stations providing Daymet data are located in Puerto Rico and Hawaii.

Daymet derived annual average of daily minimum temperature, 1980 (left) and 2019 (right), for a subset of North America. Images are scaled from -20 to +20 degrees C.

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