Sentences with phrase «says atmospheric chemist»

«This is the only long - term data set with regular measurements of ozone - destroying compounds in the stratosphere,» says atmospheric chemist Darin Toohey of the University of California, Irvine.

Those data, along with the new work, will help scientists devise more accurate climate models, says atmospheric chemist Mattias Hallquist of the University of Gothenburg in Sweden.

«Results like this are tantalizing,» says atmospheric chemist Daniel Jacob of Harvard University.

Although chlorine levels are falling, thanks to agreements that banned chlorofluorocarbons, levels of bromine — which is 45 times more effective at zapping ozone — are still rising, says atmospheric chemist Dale Hurst of the National Oceanic and Atmospheric Administration in Boulder, Colorado.

«We definitely don't think that we're ready to say this is something worth doing,» said atmospheric chemist Lynn Russell of the University of California, San Diego, a lead author on one of the report's volumes.

Not exact matches

Jim Kasting, an atmospheric chemist at The Pennsylvania State University unaffiliated with the study says its results are «on the right track,» even though «the idea that methane might be a biosignature in an anoxic atmosphere is not exactly new.»

Natural sources of this substance are small, says Ryan Hossaini, an atmospheric chemist at Lancaster University in the United Kingdom.

«This is a cutting - edge study in the field of cloud - aerosol - precipitation interactions that includes an interdisciplinary group of atmospheric chemists and meteorologists,» he said.

Part of the challenge with many these volatile - emitting products is that they're specifically designed to evaporate as part of their job, says study coauthor Jessica Gilman, an atmospheric chemist at the National Oceanic and Atmospheric Administration in Boulder.

«You might expect air quality would decline if ammonia emissions go up, but this shows it won't happen, provided the emissions from combustion go down,» said Fabien Paulot, an atmospheric chemist with Princeton University and the National Oceanic and Atmospheric Administration who was not involved in the study.

«It's a big surprise,» says Susan Solomon, an atmospheric chemist at the Massachusetts Institute of Technology in Cambridge.

This paper «is timely and an important step forward in understanding changes in the global methane budget,» says Isobel Simpson, an atmospheric chemist at the University of California, Irvine, who was not involved in the study.

«OH tends to get ignored a bit in discussions even in the science community,» says Michael Newland, an atmospheric chemist who recently completed a postdoc at the University of East Anglia in Norwich, U.K.

However, atmospheric chemist James Kasting of Pennsylvania State University in University Park says most models still point to a toasty primitive Earth engulfed by thick greenhouse gases.

«This winter has been stunning,» says Markus Rex, an atmospheric chemist at the Alfred Wegener Institute in Potsdam, Germany.

It is a statement worthy of Gertrude Stein, but University of Washington atmospheric chemist Dan Jaffe says it with conviction: None of the contamination we pump into the air just disappears.

The production of the gas is nearly doubling every year, says Michael Prather, atmospheric chemist at University of California, Irvine, who had predicted earlier this year that emissions would likely exceed the industry's claim that only 2 percent of the gas is released into the atmosphere.

Meredith Hastings, an atmospheric chemist at Brown University and co-principal investigator on a $ 1.1 million National Science Foundation grant aimed at curbing sexual harassment in the geosciences, says she is «excited that [Boston] University is stepping forward and taking some type of action — that they were able to come to the conclusion that he has harassed her.»

The finding could have broad impacts on our understanding of how the stratosphere works, says James Anderson, an atmospheric chemist at Harvard University.

But some space scientists have long made use of arXiv, and a subset of the earth scientists who published in the journals of the European Geosciences Union (EGU) have already become accustomed to such openness, as EGU has posted studies online prior to review for more than 15 years, says Ulrich Pöschl, an atmospheric chemist at the Max Planck Institute for Chemistry in Mainz, Germany, who helped found the journals.

Analyzing such systems, whether they are on the surface of a catalyst, a microbial community, or atmospheric aerosols, and understanding their impact requires tools that can accurately identify and quantify hundreds of molecules,» said Dr. Julia Laskin, a PNNL chemist, who has been advancing the frontiers of the Nanospray Desorption Electrospray Ionization Mass Spectrometry, nicknamed nano - DESI, for the last 3 years.

«The hope is that we can buy time by reducing short - lived climate forcers,» said Patricia Quinn, an atmospheric chemist researching these pollutants at the National Oceanographic and Atmospheric Administration (NOAA).

Insert, 10:08 p.m. Paul Shepson, the study's lead author and an atmospheric chemist at Purdue, said Derry's concern that the team was measuring coalbed methane coming from somewhere other than the gas wells was unfounded.

«What's really been exciting to me about this last 10 - year period is that it has made people think about decadal variability much more carefully than they probably have before,» said Susan Solomon, an atmospheric chemist and former lead author of the United Nations» climate change report, during a recent visit to MIT.

Fabien Paulot, an atmospheric chemist with Princeton University and the National Oceanic and Atmospheric Administration who was not involved in the study, said, «You might expect air quality would decline if ammonia emissions go up, but this shows it won't happen, provided the emissions from combustion go down.»

The good news is that without the Montreal Protocol things would have been a great deal worse, said Martyn Chipperfield, an atmospheric chemist at the University of Leeds.

«Growing quantities of DCM are leaking into the stratosphere, where it is exceptionally effective in destroying the ozone,» said David Rowley, an atmospheric chemist at the University College London, who was not involved in the research.

«We are very confident that livestock emissions were being underestimated,» said lead study author Kevin Wecht, an atmospheric chemist at Harvard University in Massachusetts.

In the past six years, funding for part of the network — the collection of air samples in flasks — has not kept pace with cost increases, said Ed Dlugokencky, an atmospheric chemist with NOAA's Earth Sciences Research Laboratory in Boulder, Colo..

«We were underestimating warming via black carbon by a factor of two,» says Patricia Quinn, an atmospheric chemist who contributed to the study.

Her mentor, atmospheric chemist Renyi Zhang, «foresaw this was going to be very interesting, that it would boom,» says Fan.

«There will be CO2 left in the atmosphere, continuing to influence the climate, more than 1000 years after humans stop emitting it,» says Susan Solomon, an atmospheric chemist with the US National Oceanic and Atmospheric Administration (NOAA) in Boulder, Colorado.

No way,» says Paul Wennberg, an atmospheric chemist at the California Institute of Technology.