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Tag: "satellites" at biology news

Woods Hole Research Center plans controlled burn in Amazon rainforest

...well-measured forest canopy. 'Hot pixel' data from satellites have long been used to detect the presence of fire...story fires are invisible to the coarse-resolution satellites that are used to monitor active fires around the world. The fire and subsequent fire scar could both...

Sensor web simulation investigates technique to improve prediction of pollution across the globe

...veryday activities. NASA is trying to tie together satellites and stations on the ground to develop a "sensor we...ted experiments involving two NASA Earth observing satellites that fly in formation high above Earth. These consist of Aqua and the recently launched Aura, along ...

NASA satellite data provides rapid analysis of Amazon deforestation

...pectroradiometer (MODIS) aboard the Terra and Aqua satellites to data collected from the high-resolution Landsat satellite. They found that MODIS images can rapidly and reliably detect changes in Amazon land cover. Unlike MODIS data, analyses of high spatial resolution data demand extensive storage and proces...

Logging doubles threat to the Amazon, rivaling clear-cutting, study suggests

...into each pixel of the image produced by a trio of satellites and determine the percentage of forested and deforested land within each pixel. (In contrast, the conventional interpretation of a satellite image would consider each pixel as entirely forested or deforested.) "This method gives us an incredible map...

NRL scientists detect 'milky sea' phenomena

...cal Satellite Program (DMSP). These polar-orbiting satellites feature the Operational Linescan System (OLS) instrument, which was designed primarily to monitor global cloudiness under both solar and lunar illumination. To achieve nighttime detection, the OLS uses a sensor capable of registering extremely low l...

Health of coral reefs detected from orbit

...obal scale," Dekker adds. "High-spatial resolution satellites can only do it on a few reefs due to cost and coverage constraints. We need a system that has appropriate coverage and revisit frequency, with a sufficient amount of spectral bands and sensitivity. There is no more suitable system than MERIS." The ...

Sahara's edge studied from ground, air and space to improve water management

...ailed analysis. And ESA's Envisat, ERS-2 and Proba satellites acquired images of these sites around the same tim...erEx results going to work for Aquifer, and future satellites Following formal export authorization of acquired radar and hyperspectral data from the Tunisian M...

High-tech tags on marine animals yield valuable data for biologists and oceanographers

...ts. Data recorded during a dive are transmitted to satellites when the animal comes to the surface to breathe. Costa's group has been providing water temperature and salinity data gathered by California sea lions to physical oceanographer Yi Chao at the Jet Propulsion Laboratory in Pasadena. Chao and his coll...

First wolverine radio-collared in Pacific Northwest

...t conflicting with other land uses. With help from satellites 600 miles overhead, Aubry hopes to follow wolverines in the north Cascades for at least 2 more years. ...

Marrow-derived stem cells deliver new cytokine to kill brain tumor cells, offer protection

...s separate from the main tumor and migrate to form satellites that escape treatment and often lead to recurrence. Researchers at the Maxine Dunitz Neurosurgical Institute documented several years ago that some neural stem cells ?"immature" cells that can differentiate into central nervous system cells ?have th...

Atmospheric ozone recovering in mid-latitudes, report shows

...l complementary data for the study, Yang said. The satellites and the balloonsmeasured ozone levels by atmospher...ecially important for the lower atmosphere because satellites can have difficulty in sensing the lowest regions," Yang said. Salawitch, a senior research scienti...

How satellite tracking revealed the migratory mysteries of endangered Atlantic loggerhead turtles

...information (e.g. depth and duration of dives), to satellites orbiting above, which then relay the data by e-mail to the computer of the scientist who attached the tag. For more information about tracking sea turtles, visit http://www.seaturtle.org/tracking ...

K-Staters design and build a low-cost remote sensing tool for environmental studies

...esearch has required costly, piloted airplanes and satellites for earth's images and data, he said. "Small remote-control planes can be put to work in a variety of environmental settings," Ham said. "We want them to be comparatively cheap to build and operate. They'll provide a data-collection tool that offers...

Global malaria map key weapon in fight against malaria, scientists say

...constructed using information from sources such as satellites and population censuses. Statistical approaches will enable comparisons to be made between areas where good information on malaria exists with areas where there is no information to fill in the "gaps" to create a global map of malaria risk worldwide....

NASA satellite data helps assess the health of Florida's coral reef

...pectroradiometer (MODIS) aboard the Terra and Aqua satellites gave accurate, up-to-date information on sea surfa...reefs with the aid of sophisticated data from NASA satellites will help identify the causes of bleaching and ways to prevent it so that the impact of climate and ...

CSIRO imagery shows Outer Great Barrier Reef at risk from river plumes

...sed straight after the event as there are now more satellites imaging the Earth and CSIRO has invested in fast information delivery systems. The images answer many of the questions posed in the article 'Cattle, Crops and Coral: Flood Plumes and the Great Barrier Reef' from the 2006 NASA EOS Annual Report. ...

Satellites shed light on global warming

...posium this week are hearing how Earth observation satellites allow scientists to better understand the paramete...e eager to better understand these phenomena - and satellites provide both the indispensable validation of the theoretical hypotheses and the stimulus for new ide...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...aunch and increase reliability for low-Earth-orbit satellites (2pSA1). MYTH-BUSTING IN MUSICAL INSTRUMENTS Do violin and guitar instruments truly improve their sound quality and playability over time" Examining this "played in" theory, Andrew Piacsek of Central Washington University ( piacsek@cwu.edu ) ...

Arctic ice retreating more quickly than computer models project

...l simulations of past climate with observations by satellites and other instruments. They found that, on average, the models simulated a loss in September ice cover of 2.5 percent per decade from 1953 to 2006. The fastest rate of September retreat in any individual model was 5.4 percent per decade. (September m...

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