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Full-Text Articles in Physical Sciences and Mathematics
Snow Spectral Albedo At Summit, Greenland: Measurements And Numerical Simulations Based On Physical And Chemical Properties Of The Snowpack, Carlo Carmagnola, Florent Domine, Marie Dumont, Patrick Wright, B Strellis, M Bergin, Jack E. Dibb, G Picard, Q Libois, L Arnaud, S Morin
Snow Spectral Albedo At Summit, Greenland: Measurements And Numerical Simulations Based On Physical And Chemical Properties Of The Snowpack, Carlo Carmagnola, Florent Domine, Marie Dumont, Patrick Wright, B Strellis, M Bergin, Jack E. Dibb, G Picard, Q Libois, L Arnaud, S Morin
Earth Sciences
The broadband albedo of surface snow is determined both by the near-surface profile of the physical and chemical properties of the snowpack and by the spectral and angular characteristics of the incident solar radiation. Simultaneous measurements of the physical and chemical properties of snow were carried out at Summit Camp, Greenland (72°36´ N, 38°25´ W, 3210 m a.s.l.) in May and June 2011, along with spectral albedo measurements. One of the main objectives of the field campaign was to test our ability to predict snow spectral albedo by comparing the measured albedo to the albedo calculated with a radiative transfer …
The Preservation Of Atmospheric Nitrate In Snow At Summit, Greenland, Dorothy L. Fibiger, Meredith G. Hastings, Jack E. Dibb, L Gregory Huey
The Preservation Of Atmospheric Nitrate In Snow At Summit, Greenland, Dorothy L. Fibiger, Meredith G. Hastings, Jack E. Dibb, L Gregory Huey
Earth Sciences
There is great interest in using nitrate NO3 isotopic composition in ice cores to track the history of precursor nitrogen oxides (NOx = NO + NO2) in the atmosphere. Nitrate NO3 however can be lost from the snow by surface processes, such as photolysis back to NOx upon exposure to sunlight, making it difficult to interpret records of NO3 as a tracer of atmospheric NOx loading. In a campaign consisting of two field seasons (May–June) at Summit, Greenland, high temporal frequency surface snow samples were collected and analyzed for the oxygen isotopic composition of NO3. The strong, linear relationship observed …
On The Export Of Reactive Nitrogen From Asia: NoX Partitioning And Effects On Ozone, T H. Bertram, Paul J. Wooldridge, Jack E. Dibb, Robert C. Cohen, A E. Perring
On The Export Of Reactive Nitrogen From Asia: NoX Partitioning And Effects On Ozone, T H. Bertram, Paul J. Wooldridge, Jack E. Dibb, Robert C. Cohen, A E. Perring
Earth Sciences
The partitioning of reactive nitrogen (NOy was measured over the remote North Pacific during spring 2006. Aircraft observations of NO, NO2, total peroxy nitrates (ΣPNs), total alkyl and multi-functional nitrates (ΣANs) and nitric acid (HNO3, made between 25° and 55° N, confirm a controlling role for peroxyacyl nitrates in NOx production in aged Asian outflow. ΣPNs account for more than 60% of NOy above 5 km, while thermal dissociation limits their contribution to less than 10% in the lower troposphere. Using simultaneous observations of NOx, ΣPNs, ΣANs, HNO3 and average …