Sentences with phrase «in reflectivity»

To analyze the impact of a change in the reflectivity of city roofs, scientists with Lawrence Berkeley National Laboratory (LBNL) and the state of California estimated the global number of roofs and asphalt surfaces in cities.

Dartmouth Adjunct Assistant Professor Chris Polashenski and his colleagues found that degrading satellite sensors, not soot or dust, are responsible for the apparent decline in reflectivity of Arctic snow.

Intrinsic differences in reflectivity between the metal segments allow individual particles to be identified by conventional optical microscopy.

The new image reveals that Nix is about 25 miles (40 km) wide, and intermediate in reflectivity between Pluto and Charon, researchers said.

The fact that reflectivity decreased in areas with dark water was not surprising, but there also was a decrease in reflectivity with remaining sea ice.

They also have to deal with variations in reflectivity in different parts of the mirror's surface.

This is especially the case when it comes to outdoor activities, increasing the need for apparel that provides benefits like UV protection, climate control and built - in reflectivity for better visibility at night, says Rebecca Gadd, owner of Gold Paw Series.

Salter believes that a 4 % increase in the reflectivity of 1/3 of such clouds could counteract global warming.

This «simple physics» model becomes a bit more complex when we factor - in the «positive feedbacks» — changes in reflectivity as snow and ice melt; as vegetation shifts; etc..

But a new Dartmouth - led study shows that degrading satellite sensors, not soot or dust, are responsible for the apparent decline in reflectivity of inland ice across northern Greenland.

These pictures have revealed distinct, hidden structures in rings that otherwise have the same density and composition, with stark differences in reflectivity.

By looking at satellite images before and after a storm, the scientists discerned changes in the reflectivity of the forest, which they assumed was due to damage to the canopy and thus tree loss.

«Three - decade decline in reflectivity of Arctic sea ice.»

«It is a very good paper which provides valuable new insights about the physical processes controlling the change in reflectivity of the Greenland ice sheet and specifically its darkening over time,» said Eric Rignot, a senior research scientist at NASA's Jet Propulsion Laboratory who studies ice sheets but was not involved with the new study.

«Greenland's ice is getting darker, increasing risk of melting: Feedback loops from melting itself are driving changes in reflectivity.»

The study's findings don't apply to the ice sheet's lower elevations, where surface melting, soot and dust result in more pronounced declines in reflectivity and where warmer temperatures may promote algae growth that further erodes reflectivity.

In trying to explain the apparent decline in reflectivity, lead author Chris Polashenski, an adjunct assistant professor at Dartmouth's Thayer School of Engineering and a research geophysicist at the U.S. Army Corps of Engineers Cold Regions Research and Engineering Laboratory, and his colleagues analyzed dozens of snow - pit samples from the 2012 - 2014 snowfalls across northern Greenland and compared them with samples from earlier years.

Other signs of progressive retinal atrophy involve changes in reflectivity and appearance of a structure behind the retina called the Tapetum that can be observed on a veterinary eye exam.

Veterinary ophthalmologists who examine dogs with PRA will see a decrease in the size and number of the retinal blood vessels and a change in the reflectivity of the tapetum (the shinny membrane behind the retina).

DH Both in reflectivity and form it seems responsive to the habitat.

It is unknown, to me at least, how much of each would be the result, but there are many other impacts of cloud cover fluctuations than just a change in reflectivity.