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Author |
Parish T.R., Pettre P. & Wendler G. |
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Title |
A numerical study of the diurnal variation of the Adelie Land katabatic wind regime. |
Type |
Journal Article |
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Year |
1993 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
98 |
Issue  |
d7 |
Pages |
12933-12947 |
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211 |
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0148-0227 |
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yes |
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930 |
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Author |
Patris N., Delmas R.J. & Jouzel J. |
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Title |
Isotopic signatures of sulfur in shallow Antarctic ice cores. |
Type |
Journal Article |
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Year |
2000 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
105 |
Issue |
d6 |
Pages |
7071-7078 |
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902 |
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0148-0227 |
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yes |
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Serial |
2280 |
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Title |
Interaction of Katabatic Flow With Local Thermal Effects in a Coastal Region of Adelie Land, East Antarctica
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Type |
Journal Article |
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Year |
1993 |
Publication |
J. Geophys. Res. |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
98 |
Issue |
D6 |
Pages |
10429 -10440 |
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Abstract |
Katabatic flows largely dominate the climate of the Adelie Land coastal region. A detailed climatological data analysis of Dumont d'Urville has been conducted. Results of this study support the idea that katabatic flow can be locally enhanced by the diurnal cycle of solar insolation and the temperature contrast between the continent and the ocean. The interaction between katabatic wind and local thermal effects is expressed in terms of scale analysis. Except for surface stress, all terms in the momentum equation for a katabatic flow in a coastal region of Antarctica can reach the same order of magnitude. The local circulation then is the result of a relatively tenuous force balance which can be disrupted even by a weak perturbation of any term. To estimate the effect of the temperature contrast between the ocean and the continent on the katabatic flow, two numerical experiments have been conducted. The simulations consider an ocean free of sea ice representative of the summer months, and another winter case with the ocean covered by thick sea ice. These simulations show that with the ocean free of sea ice, the katabatic flows extend only a limited distance over the open ocean during the day due to the local thermal effects. With the ocean covered by sea ice, the katabatic winds are not constrained and extend a considerable distance offshore.
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211 |
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AGU |
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0148-0227 |
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yes |
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Serial |
40 |
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Author |
Smirnov A, Holben B N, Slutsker I, Giles D M, McClain C R, Eck T F, Sakerin S M, Macke A, Croot P, Zibordi G, Quinn P K, Sciare J, Kinne S, Harvey M, Smyth T J, Piketh S, Zielinski T, Proshutinsky A, Goes J I, Nelson N B, Larouche P, Radionov V F, Goloub P, Krishna Moorthy K, Matarrese R, Robertson E J, Jourdin F, |
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Title |
Maritime Aerosol Network as a component of Aerosol Robotic Network
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Type |
Journal Article |
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Year |
2009 |
Publication |
J. Geophys. Res. |
Abbreviated Journal |
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Volume |
114 |
Issue |
D6 |
Pages |
D06204 - |
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Keywords |
aerosol optical depth, maritime aerosol, network, 0305 Atmospheric Composition and Structure: Aerosols and particles, 0360 Atmospheric Composition and Structure: Radiation: transmission and scattering, 1640 Global Change: Remote sensing, 4548 Oceanography: Physical: Ocean fog, 4801 Oceanography: Biological and Chemical: Aerosols, |
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Programme |
415 |
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AGU |
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0148-0227 |
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yes |
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Serial |
2198 |
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Author |
Steen-Larsen H C, Masson-Delmotte V, Sjolte J, Johnsen S J, Vinther B M, Bron F-M, Clausen H B, Dahl-Jensen D, Falourd S, Fettweis X, Galle H, Jouzel J, Kageyama M, Lerche H, Minster B, Picard G, Punge H J, Risi C, Salas D, Schwander J, Steffen K, Sveinbjrnsdttir A E, Svensson A, White J, |
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Title |
Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland
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Type |
Journal Article |
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Year |
2011 |
Publication |
J. Geophys. Res. |
Abbreviated Journal |
J. Geol. |
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Volume |
116 |
Issue |
D6 |
Pages |
D06108 - |
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Keywords |
NEEM, ice cores, Greenland, 3305 Atmospheric Processes: Climate change and variability, 0724 Cryosphere: Ice cores, 3307 Atmospheric Processes: Boundary layer processes, 1863 Hydrology: Snow and ice, 3344 Atmospheric Processes: Paleoclimatology, |
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Abstract |
Samples of precipitation and atmospheric water vapor were collected together with shallow firn/ice cores as part of the new deep drilling project in northwest Greenland: the NEEM project. These samples were analyzed for their isotope composition to understand the processes affecting the climatic signal archived in the water stable isotope records from the NEEM deep ice core. The dominant moisture source for the snow deposited at the NEEM-site may be originating as far south as 35N from the western part of the Atlantic Ocean. The surface atmospheric water vapor appears in isotopic equilibrium with the snow surface indicating a large water exchange between the atmosphere and snowpack. The interannual variability of NEEM shallow firn/ice cores stable isotope data covering the last ~40 years shows an unexpectedly weak NAO signal. Regional to global atmospheric models simulate a dominant summer precipitation in the NEEM area, suggesting that the intermittency of modern winter precipitation is responsible for the lack of a strong NAO imprint. The interannual variability of NEEM isotope data however shows a strong correlation with interannual variations of Baffin Bay sea ice cover, a relationship consistent with air mass trajectories. NEEM deep ice core isotopic records may therefore provide detailed information on past Baffin Bay sea ice extent. NEEM stable water isotope content increasing trend points to a local warming trend of ~3.0C over the last 40 years.
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Programme |
458 |
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AGU |
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0148-0227 |
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yes |
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Call Number |
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Serial |
2496 |
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Author |
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Title |
A reassessment of the budget of formic and acetic acids in the boundary layer at Dumont d'Urville (coastal Antarctica): The role of penguin emissions on the budget of several oxygenated volatile organic compounds
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Type |
Journal Article |
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Year |
2012 |
Publication |
Journal of Geophysical Research: Atmospheres |
Abbreviated Journal |
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Volume |
117 |
Issue |
D6 |
Pages |
D06308- |
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Keywords |
carboxylic acids, formic and acetic acids, ornithogenic soil emission, oxygenated volatile compounds, 0315 Biosphere/atmosphere interactions, 0330 Geochemical cycles, 0365 Troposphere: composition and chemistry, |
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Abstract |
Initiated in 1997, the year-round study of formic and acetic acids was maintained until 2011 at the coastal Antarctic site of Dumont d'Urville. The records show that formic and acetic acids are rather abundant in summer with typical mixing ratios of 200 pptv and 700 pptv, respectively. With the aim to constrain their budget, investigations of their potential marine precursors like short-chain alkenes and acetaldehyde were initiated in 2011. Acetic acid levels in December 2010 were four times higher than those observed over summers back to 1997. These unusually high levels were accompanied by unusually high levels of ammonia, and by an enrichment of oxalate in aerosols. These observations suggest that the guano decomposition in the large penguin colonies present at the site was particularly strong under weather conditions encountered in spring 2010 (important snow storms followed by sunny days with mild temperatures). Although being dependent on environmental conditions, this process greatly impacts the local atmospheric budget of acetic acid, acetaldehyde, and acetone during the entire summer season. Present at levels as high as 500 pptv, acetaldehyde may represent the major precursor of acetic acid, alkene-ozone reactions remaining insignificant sources. Far less influenced by penguin emissions, the budget of formic acid remains not fully understood even if alkene-ozone reactions contribute significantly.
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414;903 |
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Thesis |
Bachelor's thesis |
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ISSN |
2156-2202 |
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yes |
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Serial |
3995 |
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Journal |
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2012 |
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Journal of Geophysical Research: Atmospheres |
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117 |
Issue |
D6 |
Pages |
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Keywords |
stratosphere to troposphere exchange tropospheric ozone |
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109 |
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2156-2202 |
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yes |
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Call Number |
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Serial |
8219 |
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Author |
Kerminen V.M., Hillamo R., Makela T., Jaffrezo J.L., . & Maenhaut W. |
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Title |
The physicochemical structure of the Greenland summer aerosol and its relation to atmospheric processes. |
Type |
Journal Article |
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Year |
1998 |
Publication |
Journal of geophysical research-atmospheres |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
103 |
Issue |
d5 |
Pages |
5661-5670 |
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322 |
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0148-0227 |
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yes |
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Serial |
598 |
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Author |
Genthon Christophe, Town Michael S, Six Delphine, Favier Vincent, Argentini Stefania, Pellegrini Andrea, |
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Title |
Meteorological atmospheric boundary layer measurements and ECMWF analyses during summer at Dome C, Antarctica
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Type |
Journal Article |
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Year |
2010 |
Publication |
J. Geophys. Res. |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
115 |
Issue |
D5 |
Pages |
D05104 - |
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Keywords |
Antarctica, boundary layer, ECMWF, 3307 Atmospheric Processes: Boundary layer processes, 0798 Cryosphere: Modeling, 0394 Atmospheric Composition and Structure: Instruments and techniques, |
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1013 |
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AGU |
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0148-0227 |
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yes |
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Serial |
480 |
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Author |
Morin S, Savarino J, Frey M M, Domine F, Jacobi H-W, Kaleschke L, Martins J M F, |
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Title |
Comprehensive isotopic composition of atmospheric nitrate in the Atlantic Ocean boundary layer from 65S to 79N
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Type |
Journal Article |
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Year |
2009 |
Publication |
J. Geophys. Res. |
Abbreviated Journal |
J. Geophys. Res. |
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Volume |
114 |
Issue |
D5 |
Pages |
D05303 - |
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Keywords |
stable isotopes, atmospheric nitrate, isotope anomaly, 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry, 0454 Biogeosciences: Isotopic composition and chemistry, 0469 Biogeosciences: Nitrogen cycling, 0305 Atmospheric Composition and Structure: Aerosols and particles, 9325 Geographic Location: Atlantic Ocean, |
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Programme |
1011 |
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AGU |
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0148-0227 |
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yes |
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Call Number |
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1882 |
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