Sentences with phrase «change in vegetation»

«What happens on the surface of the earth (in terms of changes in vegetation) is a big factor in climate change,» she said.

Of course the people who study this stuff try to account for changes in vegetation, for instance; that's called land - use forcing.

These images allow scientists to measure changes in vegetation over time.

Future climate change and increasing atmospheric CO2 are expected to cause major changes in vegetation structure and function over large fractions of the global land surface.

We're seeing the effects now, from the ice caps melting to changes in vegetation growth rates.

The maps show changes in vegetation, elevation, amount of rainfall and include scales to show distance.

Changes in vegetation = > changes in albedo / CO2 levels.

However, unless there is a regular and progressive change in the vegetation pattern around the station, this would not produce an ongoing change of any bias.

High temperatures and pressures caused physical and chemical changes in the vegetation, transforming it into coal.

But guessing which changes in vegetation are natural and which are man - made is tricky to put it kindly.

A new paper published in Frontiers in Earth Science by archeologist Dr. David Wright, from Seoul National University, challenges the conclusions of most studies done to date that point to changes in the Earth's orbit or natural changes in vegetation as the major driving forces.

Broad - scale changes in vegetation in general, and tree loss in particular, have pronounced effects on climate processes through biogeophysical mechanisms such as albedo, evapotranspiration (ET), and carbon dioxide exchange with the atmosphere [11].

«Nobody really knows what the increases in CO2 are going to entail in terms of future changes in vegetation types,» co-author Mark Brenner of the University of Florida says.

I was pleased upon reading Linda Geddes's piece on changes in vegetation around animal graves (10 April, p 18) to...

A new paper published in Frontiers in Earth Science by archeologist Dr. David Wright, from Seoul National University, challenges the conclusions of most studies done to date that point to changes in the Earth's orbit or natural changes in vegetation as the major driving forces.

FOR IMMEDIATE RELEASE An extensive new study by climate impact researchers warns that humans will struggle to cope with drastic and rapid changes to the planet unless greenhouse gas emissions rates are cut now London, 8 October − Allowing the Earth's temperature to rise by more than 2ºC will see dramatic changes in vegetation across the planet and expose a billion more people to severe water scarcity, according to new research.

Taking into account CO2 - induced changes in vegetation, global mean runoff under a 2 * CO2 climate has been simulated to increase by approximately 5 % as a result of reduced evapotranspiration due to CO2enrichment alone («physiological forcing»)(Betts et al., 2007; Leipprand and Gerten, 2006).

Mean change in vegetation carbon at +4 °C global land warming from a 1971 — 1999 baseline.

The FORMA alerts system then detects pronounced changes in vegetation cover over time, as measured by the Normalized Difference Vegetation Index (NDVI), a measure of vegetation greenness.

Over the past two decades, researchers have seen changes in the vegetation around the tundra.

Longer timescales bring changes in vegetation that also affect heat absorption, and the possibility that land and oceans begin to release CO2 rather than absorb it.

Studies including Wang's earlier work in Africa have shown that even small changes in soil moisture in drylands could be significant enough to cause large changes in vegetation productivity.

Teasing out changes in vegetation greenness over the Amazon is one of the most challenging problems for satellite remote sensors because there's no tougher place on Earth to observe the surface.

Although models agree that carbon - cycle changes represent a positive feedback, the range of their responses remains very large, depending, among other things, on poorly understood changes in vegetation or soil uptake of carbon as the climate warms.

«The results underscore the importance of accounting for changes in vegetation communities to accurately characterize future stream flow for the Sierra Nevada.»

Researchers eventually realized that subtle changes in vegetation had reduced the habitat for red ants; the Large Blue butterfly spends part of its life cycle in ant nests.

The scientists were thus able to reconstruct changes in the vegetation cover of the Atlantic seaboard and in the temperatures of the Atlantic Ocean.

Plant associations in Belize are usually designated by the term «ridge» which has nothing to do with elevation, but rather with changes in vegetation.

and you get to see some cool changes in vegetation along the way.

On longer (multi-millennial) timescales we expect changes in vegetation and ice - sheets to occur and alter the response and that sensitivity is often described as the Earth System Sensitivity (ESS).

The greatest changes in vegetation are occurring in the High Arctic of Canada and West Greenland and Northern Alaska, where increases in greening of up to 15 % have been observed from 1982 to 2008.

Köhler, P., Joos, F., Gerber, S. & Knutti, R. Simulated changes in vegetation distribution, land carbon storage, and atmospheric CO2 in response to a collapse of the North Atlantic thermohaline circulation.

Change in Vegetation Density (LAI) C. 6.4.

A significant component of this key ecosystem characteristic is dependent on relatively slow processes such as rates of recuitment, mortality, and changes in vegetation composition.

The images help to reveal notable changes in vegetation cover over time using an indicator that measures vegetation intensity called the Normalized Difference Vegetation Index (NDVI).

Although biogenic NMVOC emissions increase with increasing temperature, all three studies concur that climate - driven changes in vegetation types unfavourable to isoprene emissions (notably the recession of tropical forests) would partly compensate for the effect of warming in terms of ozone generation.

The carbon biogeochemical cycle in CLM4 calculates changes in vegetation and wildfire occurrences, both of which depend on hydrological conditions (Thonicke et al. 2001; Kloster et al. 2010).

Climate change in Romania, will affect all sectors of the economy will lead to changes in vegetation periods and displacement the line between woods and meadows.

Biogeochemical forcing involves changes in vegetation biomass and soils.

For example, while significant changes in the vegetation or built environment surrounding a weather station may not be included in historical metadata, they may cause significant changes in the exposure of the instruments.

By overlaying satellite images with data collected from beekeepers, NASA hopes to predict changes in vegetation and prevent colony collapse.

Naively, for example, I can imagine slow changes in vegetation leading to variation in the availability of dust & other aerosols.

As the University of Alaska at Fairbanks puts it — in more detached and technical language — more Alaskan wildfires could lead to «Loss of forest and surface organic materials — > permafrost thaw — > change in vegetation / hydrology dynamics and carbon cycling.»