Sentences with phrase «isotope data for»

«Ecologists currently focus too much attention on measuring the variation of isotope data for consumers and their prey and not enough attention on quantifying the interactions of consumers and their prey using isotope data,» Hopkins explained.

Not exact matches

Chandrayaan - 2 will collect data on the moon's thin envelope of plasma, as well as isotopes such as helium - 3, a potential fuel for future fusion energy reactors.

By looking at the chemistry of rocks deposited during that time period, specifically coupled carbon and sulfur isotope data, a research team led by University of California, Riverside biogeochemists reports that oxygen - free and hydrogen sulfide - rich waters extended across roughly five percent of the global ocean during this major climatic perturbation — far more than the modern ocean's 0.1 percent but much less than previous estimates for this event.

For the first time, the researchers have proved that both the worldwide measurement network NDACC with its ground stations and modern weather satellites provide reliable global data for the isotope composition of tropospheric water vapFor the first time, the researchers have proved that both the worldwide measurement network NDACC with its ground stations and modern weather satellites provide reliable global data for the isotope composition of tropospheric water vapfor the isotope composition of tropospheric water vapor.

The ratio between quantities of different isotopes provides the data for an equation that calculates the age.

The paleoclimate data, which included mainly changes in the oxygen isotopes of the calcium carbonate deposits, were then compared to similar records from other caves, ice cores, and sediment records as well as model predictions for water availability in the Middle East and west central Asia today and into the future.

Analysis of the stable isotope control data was funded in part by a grant from the Fishmongers» Company, one of London's medieval Livery Companies, which retains responsibility for quality control at London's Billingsgate fish market.

Demersal fisheries ecology, trophic ecology and fish bioenergetics, stable isotope ecology, evaluation of closed areas for rebuilding groundfish, various tagging techniques to monitor fish movements (acoustic arrays, data storage tags, conventional tagging)

As for the geochemical data, it is based on Mg / Ca in foraminifera, alkenone unsaturation in sediments and some sparse data from other techniques such as Ca isotopes, clumped isotopes and TEX86.

The method should also be tested against the hurricane - related oxygen isotope data collected in 2004 and 2005, if that is possible for recent tree growth.

Rob: In fact if you had read my original post carefully, I didn't make any specific claim about WHICH isotope data was the basis for this conclusion; I was referring to a class I took a decade ago, and browsing AR4 a few years ago.

Sunspot observations (going back to the 17th century), as well as data from isotopes generated by cosmic radiation, provide evidence for longer - term changes in solar activity.

Different records of solar activity (Wolf and group sunspot number, data on cosmogenic isotopes, historic data) were analyzed by means of modern statistical methods, including one especially developed for this purpose.

Tree ring and carbon isotope analysis of a sample of trees on the study sites would give measurable data for evaluating this question, which would be a good field study to follow this modeling exercise.

In 1999, the year after the high temperatures of the 1998 El Nino, I became convinced that geologic data of recurring climatic cycles (ice core isotopes, glacial advances and retreats, and sun spot minima) showed conclusively that we were headed for several decades of global cooling and presented a paper to that effect (Fig. 5).

Early TRL projects focused on establishing long tree - ring records from temperature - sensitive boreal forest locations in North American for studies of global change, using dendrochronologically dated wood, to investigate the value of stable isotope ratios in cellulose as paleo - thermometers and developing the necessary computer software for processing the data.

We thank C. Belanger for methodological advice and S. Clemens for providing the isotope data.

For this reason ice core data is not often converted to temperature, but left as isotope ratios.

A new database brings together water isotope data from many sources, providing an integrated resource for studying changes in Earth's hydroclimate over the past 2,000 years.

For a few years they held their ground, for it turned out that Emiliani's data on oxygen isotopes taken up in plankton shells did not directly measure ocean temperatures after aFor a few years they held their ground, for it turned out that Emiliani's data on oxygen isotopes taken up in plankton shells did not directly measure ocean temperatures after afor it turned out that Emiliani's data on oxygen isotopes taken up in plankton shells did not directly measure ocean temperatures after all.

We use isotope data from Zachos et al. [4], which are improved over data used in our earlier study [5], and we improve our prescription for separating the effects of deep ocean temperature and ice volume in the oxygen isotope record as well as our prescription for relating deep ocean temperature to surface air temperature.

The 22 - year period was chosen because the cosmogenic isotope data used for the reconstruction (see below) are available as 22 - year averaged data (Steinhilber et al. 2008).

Tree Ring Data for Climate Reconstruction and Indication of Shifting Climate Regimes by Valerie Barber, Institute of Marine Science: «The three different parameters of the annual tree rings (width, density, and ð13C isotope concentration) measured in this study produce distinctly different climatic information.

All of this ought to be a bit easier to understand (for those unfamiliar with isotopes) once I put a graph up, showing the data.

Isotope Data Suggests Fossil Fuels Not to Blame for Increase Methane bubbles up from swamps and rivers, belches from volcanoes, rises from wildfires, and seeps from the guts of cows and termites (where is it made by microbes).

For example, laser microsampling now provides detailed stable - isotope and trace - element data for fluid inclusions, authigenic mineral layers, and microfossiFor example, laser microsampling now provides detailed stable - isotope and trace - element data for fluid inclusions, authigenic mineral layers, and microfossifor fluid inclusions, authigenic mineral layers, and microfossils.

Jim D.August 16, 2010 at 6:18 pm Read my presentation http://www.kidswincom.net/climate.pdf for a different interpretation of the isotope depletion data.