Sentences with phrase «satellite observations the study»

Not exact matches

Scott Goetz, a senior scientist at the Woods Hole Research Center who has studied the Amazon, said that fleshing out what are «essentially back - of - the - envelope calculations» of the 2010 drought's impact will require additional field measurements and a closer examination of satellite observations of the Amazon's tree canopy.

«Direct and regular observation of plasma by satellites started after the late 1960s — almost a decade after the first human - made satellite, Sputnik 1, was launched in 1957,» explains Masahito Nosé, an author of the study.

Related sites Abstract of paper, with link to full text Chandra X-ray Observatory FUSE satellite, used in similar studies of lower - temperature gas Observations of Markarian 421 blazar Shull's home page

In a press conference Monday at the American Geophysical Union meeting in San Francisco, three researchers discussed how detailed satellite observations have facilitated ecological studies of change over time.

A new Columbia Engineering study, led by Pierre Gentine, associate professor of earth and environmental engineering, analyzes global satellite observations and shows that vegetation alters climate and weather patterns by as much as 30 percent.

Using global climate models and NASA satellite observations of Earth's energy budget from the last 15 years, the study finds that a warming Earth is able to restore its temperature equilibrium through complex and seemingly paradoxical changes in the atmosphere and the way radiative heat is transported.

By combining satellite images of the ice sheet and wind stress data from observations and computer modeling, Greene and his collaborators were able to study the chain of events that brings the warm water to Totten.

The study authors based their analysis on a combination of satellite observations of rainfall and vegetation and an atmospheric circulation model to track the movement of air masses.

The study is a «painstaking analysis» of the fragmented satellite record and shows some consistency between models and observations of clouds, says meteorologist Bjorn Stevens of the Max Planck Institute for Meteorology in Hamburg, Germany.

Using models and satellites The study authors» «cutting - edge methodology will allow observations to be used consistently to examine large - scale deforestation impacts on rainfall, and to refine and evaluate current models to support conservation planning in the tropics,» Aragao wrote.

Dr. Chapman has been the Principal Investigator of many NASA and NSF grants and has been P.I. of research concerning the Late Heavy Bombardment of the Moon (and inner solar system), astronomical observations of very young asteroid families, analysis of NEAR Shoemaker images of Eros, studies of secondary cratering on Mars, and investigations of the cratering records of the Galilean satellites.

«This study confirmed that ocean circulation physics and K. brevis biology are equally important and that both immediate and short term prediction may be achieved using a combination of circulation models supported by in situ observations of physical, biological and chemical variables and satellite imagery,» concluded the researchers.

«A new study based on satellite observations finds that temperatures could rise nearly 5 °C by the end of the century.»

He has pioneered the use of SP - CAM to study aerosol - cloud interaction and used it together with satellite observations to constrain aerosol indirect effects.

A 2007 NASA sponsored satellite - based study sheds light on the puzzling observations by other scientists that the amount of sunlight reaching Earth's surface had been steadily declining in recent decades, began to reverse around 1990.

The number of in situ and satellite observations of cryospheric parameters has increased considerably since AR4 and the use of the new data in trend analyses, and also in process studies, has enabled increased confidence in the quantification of most of the changes... They reveal a general decline in all components of the cryosphere...

They do cite a study by Lindzen and Choi, which has shown, based on ERBE satellite observations, that the net impact of a doubling of CO2 including all feedbacks is likely to be significantly lower than the model - based estimates by Myhre for sensitivity without feedbacks.

The values cited by Lindzen + Choi plus Spencer are based on ERBE and CERES satellite observations, where «Spencer» is based on comments to the L+C 2009 paper and L+C 2011 is a correction to the earlier L+C 2009 study.

The authors present the study as a test of Europe's earth observation satellite Sentinel - 1 and its ability to deliver radar measurements to accuracies of millimetres.

In 2004 he and Ken Minschwaner published a study on water vapor increase with rising temperature over the tropics, based on actual satellite observations.

The study shows that satellite observations of atmospheric carbon dioxide levels are a useful tool toward understanding how semiarid ecosystems will respond to climate change in the future.

When the R / V Gould reaches Station Obama later this month, the team of scientists aboard will spend six hours collecting a suite of biological, physical, and chemical measurements.They'll map sea ice cover from the ship and satellite observations, whale biologists will make shipboard visual and drone - based instrumental observations, and two penguin scientists will spend five days studying a nearby Adélie penguin colony.

A study using Earth Remote Sensing satellite radar interferometry (EERS - 1 and -2) observations from 1992 through 2011 finds «a continuous and rapid retreat of the grounding lines of Pine Island, Thwaites, Haynes, Smith, and Kohler» Glaciers, and the authors conclude that «this sector of West Antarctica is undergoing a marine ice sheet instability that will significantly contribute to sea level rise in decades to centuries to come» (Rignot et al. 2014).

Since the end of the study, which took observations up to the year 2012, Arctic ice has reached a record low, shrinking to its sixth - lowest level since satellite tracking started in 1979.

Christy said his approach, which relies on observations from satellites and balloons, is more systematic and global than the estimates provided in the surface - temperature studies.

http://www.csiro.au/Portals/Media/Deserts-greening-from-rising-CO2.aspx In findings based on satellite observations, CSIRO, in collaboration with the Australian National University (ANU), found that this CO2 fertilisation correlated with an 11 per cent increase in foliage cover from 1982 - 2010 across parts of the arid areas studied in Australia, North America, the Middle East and Africa, according to CSIRO research scientist, Dr Randall Donohue.»

It was likely that local conditions at scales finer than those detected by satellite observations increased or decreased the effect of the thermal stress within and among reefs at the sub-pixel scale (e.g., coral community structure, small - scale hydrodynamics, past bleaching; the analysis of which were beyond the scope of this study).

Lee, A. Loew and G. Magnusdottir, 2011: Globally gridded satellite (GridSat) observations for climate studies.

- At NERSC we use these satellite observations for research and development studies of the upper ocean and sea ice covered regions, with special focus in the Nordic Seas and Arctic Ocean.

Estimates from proxy data1 (for example, based on sediment records) are shown in red (1800 - 1890, pink band shows uncertainty), tide gauge data in blue for 1880 - 2009,2 and satellite observations are shown in green from 1993 to 2012.3 The future scenarios range from 0.66 feet to 6.6 feet in 2100.4 These scenarios are not based on climate model simulations, but rather reflect the range of possible scenarios based on other kinds of scientific studies.

Jacob co-authored a separate study based on satellite data and surface observations last month in the academic journal Geophysical Research Letters.

The GISS (Goddard Institute for Space Studies), NCDC (National Climate Data Center), and CRU (Climate Research Unit) data are all compiled from surface records, while the RSS (Remote Sensing Systems) and UAH (University of Alabama - Huntsville) data are compiled from satellite observations of the lower atmosphere.

In an earlier study (Labe et al., 2018a), we show that the CESM - LENS sea ice thickness compares well with satellite observations and output from an ice - ocean model.

Develop and validate retrieval algorithms for ocean and sea ice parameters from various satellite Earth observation data, which in are used in studies of upper layer mesoscale ocean processes, air - sea - ice interaction, climate change studies and in operational oceanography.

The new study [Samanta, and by implication Saleska since the observations agree] contributes to our understanding of interpretations of data retrieved from satellites, but it does not prove or disprove anything about what is really happening on the ground.

They expected to find a decline in ice thickness when they embarked on a study of radar observations of 402 lakes near Barrow in Alaska from the European earth resources satellites ERS - 1 and ERS - 2.

To any extent that the records of «satellite data» have been used to create assessments of land surface temperatures by way of adjustment to calibrate those observations against the information harvested from the meteorological thermometers which are the subjects of the SurfaceStations.org study, the error has crept into the assessments of the satellite data.

Model studies including more aerosol species or constrained by satellite observations tend to yield a relatively weaker RF.

Inverse estimates of aerosol forcing do not have to rely much on GCMs, are for AF, and are in line with the SOD's satellite - observation derived central AF estimate of -0.73 W / m ^ 2 (discounting estimates from studies in the SOD's list that are, for reasons such as those I mentioned in my 2/2/13 5:59 am comment, obviously useless).

Recent eyewitness reports of open water from melting ice at the North Pole have prompted climatologists and other scientists to make a closer study of satellite imagery and other observations of northern sea ice, past and present.

Excluding unsuitable studies like those, the mean of the inverse estimates is actually in line with the -0.73 W / m ^ 2 satellite observation based best estimate.

This study based on CERES satellite observations shows strongly negative overall cloud feedback with warming over the tropics.

A recent study used NASA satellite observations to test the skill of climate models in simulating this cloud - type transition, and found that high sensitivity models simulate it more accurately, while low sensitivity models tend to overemphasize its climate cooling effect.

The study, which appeared in a recent issue of Geophysical Research Letters, used 16 years of monthly mean observations from satellites, ground stations, and computer models to look at the relationship between dust particles in the air, called mineral aerosols, and cloud properties.

Previous studies of satellite and submarine observations have seemed to establish a warming trend in the northern polar region and raise the possibility of a melting icecap.

Papa, F., C. Prigent, F. Durand, and W.B. Rossow, 2006: Wetland dynamics using a suite of satellite observations: A case study of application and evaluation for the Indian Subcontinent.

And the only purely observational study featured in AR4, Forster & Gregory (2006), which used satellite observations of radiation entering and leaving the atmosphere, also gave a best estimate of 1.6 °C, with a 95 % upper bound of 4.1 °C.

This study reconstructs a century - long SAMOC index, from 1870 to present, using sea surface temperature (SST) from 1993 to present, the period for which Expendable Bathythermographs (XBT) and satellite altimetry observations of SAMOC are available.

After the publication of AR4, a study by Spencer et al., using physical observations from CERES satellites over the tropics, showed that the net feedback from clouds is strongly negative, rather than positive, as assumed by the climate models.

Studies based on satellite observations do not provide unequivocal evidence concerning the mass balance of the East Antarctic ice sheet; some appear to indicate marginal thickening (Davis et al., 2005), while others indicate little change (Zwally et al., 2005; Velicogna and Wahr, 2006; Wingham et al., 2006).