Search Results for ‘singh’

Siri Jodha Singh Khalsa: An Earthzine Personal Profile

Siri Jodha Singh Khalsa
The business of standards within the developing GEOSS community requires the commitment, expertise, and networking capabilities of a host of individuals. Foremost among these is Siri Jodha Singh Khalsa of the National Snow and Ice Data Center (NSIDC), in Boulder, Colorado. Since receiving his B.A. in Physics from the University of California, Irvine, and his Ph.D. in Atmospheric Sciences from the University of Washington, Seattle, Khalsa has been a major contributor to a variety of data programs. His activity in leading the IEEE effort in standards and interoperability for GEOSS is a natural extension of his work in these programs, albeit on a global scale.

Wise Decisions: Remote Flood Monitoring in Wise County, Virginia

Wise in 3D. The inputs for the NASA DEVELOP National Program Wise Disasters Project analyzing flooding hazards in Wise, Virginia. Image Credit: Wise Disasters Team
Wise County is located in the Appalachian Mountains of southwest Virginia. Mountainous terrain increases the amount of runoff into local drainage basins during strong storms, which can increase the frequency of flash floods.

GIS Free-For-All

With only 3 million acres left in the U.S., longleaf pine habitats require careful management. Image Credit: Dave McAdoo
Using free and open source GIS programs and data platforms can eliminate costs associated with data processing, making Earth Observation data more profitable for all. Clyde A. Brooke purchased 140 acres of land in Hancock, Mississippi, in 1952 to begin a timber operation, and what began as a humble operation has grown to more than […]

Stress Tests for the Sea: Can Fisheries Withstand Ocean Acidification?

West Coast marine ecosystems host a large number of species, exemplified in this image from a NOAA survey dive close to Catalina Island, just off the southern California coast. Ecosystem models simulate interactions among species and between species and their environment. Image Credit:  Adam Obaza/NOAA
Ocean acidification is a new challenge to fisheries managers. Tools available today offer multiple avenues for considering the phenomenon

Probing Human Vulnerability to Ocean Acidification Uncovers Mitigation and Adaptation Opportunities

Figure 2: Overall vulnerability of U.S. regions to ocean acidification. Social vulnerability is shown on land, in red tones, and severity of ocean acidification (purple) and its local amplifiers (algal overgrowth, in yellow stars  and “E( x/y)”; low-pH river discharge, yellow triangles and “R (x/y)”; upwelling, “U”) is shown over the water. E(x/y) notes the number of highly eutrophic estuaries (x) relative to the total number of estuaries evaluated in each region (y), while R(x/y) notes the number of rivers with low carbonate ion levels and high annual discharge volume (x) relative to the total number of rivers in a region (y). Darker colors indicate higher vulnerability or hazard. Purple scale indicates the year at which average ocean chemistry will reach a lethal level for larval shellfish. Reprinted from Ekstrom et al. [23] with permission of Nature Climate Change.
Sarah Cooley, Ocean Conservancy Julia Ekstrom, U. California Davis Lisa Suatoni, Natural Resources Defense Council Ocean acidification has recently elbowed its way onto the list of wicked problems that coastal communities need to plan for. Coastal communities depend on a variety of oceanic goods and services, often led by marine harvests [1]. However, ocean acidification […]