137Cs Gamma-ray detection at Summit, Greenland
نویسندگان
چکیده
منابع مشابه
Ozone uptake to the polar snowpack at Summit, Greenland
The uptake of atmospheric ozone to the polar, year-round snowpack on glacial ice was studied at Summit, Greenland during three experiments in 2003, 2004, and 2005. Ozone was measured at up to three depths in the snowpack, on the surface, and above the surface at three heights on a tower along with supporting meteorological parameters. Ozone in interstitial air decreased with depth, albeit ozone...
متن کاملAir-snow exchange of HNO3 and NOy at Summit, Greenland
Ice core records of NO3deposition to polar glaciers could provide unrivaled information on past photochemical status and N cycling dynamics of the troposphere, if the ice core records could be inverted to yield concentrations of reactive N oxides in the atmosphere at past times. Limited previous investigations at Summit, Greenland, have suggested that this inversion may be difficult, since the ...
متن کاملSurface-atmosphere decoupling limits accumulation at Summit, Greenland
Despite rapid melting in the coastal regions of the Greenland Ice Sheet, a significant area (~40%) of the ice sheet rarely experiences surface melting. In these regions, the controls on annual accumulation are poorly constrained owing to surface conditions (for example, surface clouds, blowing snow, and surface inversions), which render moisture flux estimates from myriad approaches (that is, e...
متن کاملReconstructing the last interglacial at Summit, Greenland: Insights from GISP2.
The Eemian (last interglacial, 130-115 ka) was likely the warmest of all interglacials of the last 800 ka, with summer Arctic temperatures 3-5 °C above present. Here, we present improved Eemian climate records from central Greenland, reconstructed from the base of the Greenland Ice Sheet Project 2 (GISP2) ice core. Our record comes from clean, stratigraphically disturbed, and isotopically warm ...
متن کاملNonstationarity of turbulent heat fluxes at Summit, Greenland
Turbulence data collected over a total of 25 days during two summers are used to describe processes responsible for the nonstationarity of turbulent sensible heat fluxes at Summit, Greenland. A stationarity test shows that about 40% of the data are classified as nonstationary. Three main factors are explored to account for the large fraction of nonstationary runs: (1) intermittency of turbulenc...
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ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 1994
ISSN: 0022-1430,1727-5652
DOI: 10.1017/s002214300000383x