Continuity of Earth Observation Data for Australia: Research and Development Dependencies to 2020

EarthzineArticles, Earth Observation, Original, Sections

A screenshot of the CEODA-R&D Cover. Image Source: CSIRO

Illustration of the planet earth with satellites orbiting.Australia is one of the largest users worldwide, by volume and variety, of Earth Observations from Space (EOS). These observations underpin weather forecasting, a large variety of operational services for land, oceans and atmosphere, as well as the research and development (R&D) activities that generate new applications and benefits for the nation.

Improving Small-Scale Wind Forecasting through NASA EOS

EarthzineDEVELOP Virtual Poster Session, Original

A map showing Mean Sea Level Pressure (black solid lines) and 925 hPa winds derived from 6-hourly MERRA reanalysis data on Oct. 26, 2010.

A map showing Mean Sea Level Pressure (black solid lines) and 925 hPa winds derived from 6-hourly MERRA reanalysis data on Oct. 26, 2010.Intense extratropical cyclones are often associated with non-convective high winds, which have devastating economic and societal impacts. This study used experimental GOES satellite data derived from NASA satellite products and NASA Modern-Era Retrospective Analysis for Research and Applications (MERRA) reanalysis data to assess the link between subsiding upper-level air and high-surface winds in three intense mid-latitude cyclones that produced significant wind events. The results are expected to help increase forecasters’ understanding of the structure of intense extratropical cyclones that produce high-impact, non-convective winds and lead to improved forecasts of these events.

Veteran Landsat 5 Mission Suspended

LaygoEarth Observation, Original, Quick Looks

Landsat 5 Satellite. Credit: USGS

Landsat 5 Satellite. Credit: USGSLandsat 5’s 28th birthday this year was marked by a suspension in operations while the USGS Flight Operations Team “continues to investigate options for the resumption of imaging.” Landsat 5’s operations were originally halted in November 2011 due to a rapidly degrading electronic component.

Landsat: An Earth-Observing Trailblazer

EarthzineArticles, Earth Observation, Original, Sections

Map showing the location of Peddavagu basin, a tributary of Krishna River basin

Picture of Bonneville Salt Flats, with salt being blue and bare earth being redLandsat missions have been funded for nearly 40 years. The images returned by the series of satellites have been useful in mapping urban growth, monitoring carbon in forests and deforestation, monitoring crop acreage, and surveying disaster aftermath. Landsat data has even found previously uncharted land and led to the discovery of new species.

Using the Landsat Archive for the Monitoring of Mediterranean Coastal Wetlands: Examples from the GlobWetland-II Project

EarthzineArticles, Earth Observation, Ecosystems Theme, Original, Sections, Themed Articles, Water Availability Theme

A photo showing the author turning over a cover crop of winter rye on Jan. 2, 2012. In three of the past six years, ground freeze-up, which historically occurred by November, has been delayed into January.

Figure showing multi-temporal Wetland Identification and Delineation products (1975, 1990, and 2002) for exemplary sites between Izmir and Bodrum (upper part: region around Tahtali Dam; lower part: Bodrum airport area).Coastal wetlands in the Mediterranean have undergone considerable land use and land cover changes in recent decades, by way of urban growth and increasing tourism infrastructure. The GlobWetland-II project makes use of the 35 years of Landsat archives for a basic identification and delineation of wetlands during 1975, 1990, and 2005. The authors present results of wetland identification and delineation mapping from 1975 to 2002, for the test sites of the Menderes Delta and GÌ_llÌ_k Bay.

Monitoring Crop Tillage Practices and Carbon Sequestration with NASA EOS for Enhanced Agricultural Management Decision Support

EarthzineDEVELOP Virtual Poster Session, Original

Image showing Relative difference Normalized Burn Ratios (RdNBR) showing four levels of burn severity in the Possum Kingdom Lake (left) and Bastrop Complex (right) fires.

image showing Methodology of our project: Digital numbers of Hyperion imagery are converted to reflectance values, which are then ingested into the Cellulose Absorption Index (CAI) Model. After map algebra is performed on intermediary Hyperion raster data sets, the model yields crop residue fraction. This project builds off of past data processing methodologies in an effort to validate previous techniques for monitoring tillage practices. We will produce visuals for conservation method adoption using remote sensing data in Virginia. The results will be confirmed using CropScape coupled with percentage data derived from the Conservation Technology Information Center (CTIC) as opposed to the line-transect ground-truth method used by NASA Langley’s summer 2011 Midwest Agriculture & Climate team.