Sentences with phrase «in vegetation greenness»

While recent findings based on satellite records indicate a positive trend in vegetation greenness over global drylands, the reasons remain elusive.

Greening of arctic Alaska, 1981 - 2001 http://www.agu.org/pubs/crossref/2003/2003GL018268.shtml «Here we analyzed a time series of 21 - yr satellite data for three bioclimate subzones in northern Alaska and confirmed a long - term trend of increase in vegetation greenness for the Alaskan tundra that has been detected globally for the northern latitudes.»

«With our work, we have shown that there is a dry season greening but that under extended drought we get a decline in vegetation greenness.»

The positive trend in vegetation greenness has been observed through satellite images, but the reasons for it had been unclear.

Not exact matches

Change in Amazon greenness from 2000 to 2012, measured as Normalized Difference Vegetation Index (NDVI).

Data from the Visible - Infrared Imager / Radiometer Suite (VIIRS) instrument on board the NASA / NOAA Suomi NPP satellite is able to detect these subtle differences in greenness, and is sending extraordinary images back to Earth giving us a clearer picture of vegetation around the world.

In addition to global evapotranspiration trends, they examined vegetation greenness and general climate data including temperature, precipitation and cloudiness.

For example, in years that had more than average burning during the dry season, measurements of soil moisture, evaporation and vegetation greenness — all of which help to trigger rain — decreased in the following wet season.

Previous research used satellite - based measurements of vegetation greenness to investigate changes in the Amazon rainforest, notably the effects of severe short - term droughts in 2005 and 2010.

To clarify the impact of long - term drought on the Congo rainforest, Zhou and colleagues set out to see whether they could detect a trend in a satellite measure of vegetation greenness called the Enhanced Vegetatvegetation greenness called the Enhanced VegetationVegetation Index.

Widespread decline in greenness of Amazonian vegetation due to the 2010 drought.

Our results indicated that vegetation greenness in the Great Basin increased significantly during the study period... [C] limate warming played a strong role in extending GSL [growing season length] that in turn resulted in the upward trend in mean vegetation greenness during 1982 — 2011.

The data is called the Normalized Difference Vegetation Index, and there are several teams analyzing this and they are all agreeing that they are picking up a steady increase in the greenness of the planet.

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 vegetation cover over time, as measured by the Normalized Difference Vegetation Index (NDVI), a measure of vegetation Vegetation Index (NDVI), a measure of vegetation vegetation greenness.