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Douglas Thomas A, Domine Florent, Barret Manuel, Anastasio Cort, Beine Harry J, Bottenheim Jan, Grannas Amanda, Houdier Stephan, Netcheva Stoyka, Rowland Glenn, Staebler Ralf, Steffen Alexandra, |
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Title |
Frost flowers growing in the Arctic ocean-atmosphere-sea ice-snow interface: 1. Chemical composition |
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Journal Article |
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Year |
2012 |
Publication |
J. Geophys. Res. |
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Volume |
117 |
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Pages |
D00R09 ST - |
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Keywords  |
frost flowers polar atmospheric chemistry sea ice 0738 Cryosphere: Ice (1863) 0750 Cryosphere: Sea ice (4540) 0793 Cryosphere: Biogeochemistry (0412, 0414, 1615, 4805, 4912) 1022 Geochemistry: Composition of the hydrosphere 1050 Geochemistry: Marine geochemistry (4835, 4845, 4850), |
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Abstract |
Frost flowers, intricate featherlike crystals that grow on refreezing sea ice leads, have been implicated in lower atmospheric chemical reactions. Few studies have presented chemical composition information for frost flowers over time and many of the chemical species commonly associated with Polar tropospheric reactions have never been reported for frost flowers. We undertook this study on the sea ice north of Barrow, Alaska to quantify the major ion, stable oxygen and hydrogen isotope, alkalinity, light absorbance by soluble species, organochlorine, and aldehyde composition of seawater, brine, and frost flowers. For many of these chemical species we present the first measurements from brine or frost flowers. Results show that major ion and alkalinity concentrations, stable isotope values, and major chromophore (NO3- and H2O2) concentrations are controlled by fractionation from seawater and brine. The presence of these chemical species in present and future sea ice scenarios is somewhat predictable. However, aldehydes, organochlorine compounds, light absorbing species, and mercury (part 2 of this research and Sherman et al. (2012)) are deposited to frost flowers through less predictable processes that probably involve the atmosphere as a source. The present and future concentrations of these constituents in frost flowers may not be easily incorporated into future sea ice or lower atmospheric chemistry scenarios. Thinning of Arctic sea ice will likely present more open sea ice leads where young ice, brine, and frost flowers form. How these changing ice conditions will affect the interactions between ice, brine, frost flowers and the lower atmosphere is unknown. |
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1017 |
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0148-0227 |
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yes |
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1740 |
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Title |
Towards Operational Fiducial Reference Measurement (FRM) Data for the Calibration and Validation of the Sentinel-3 Surface Topography Mission over Inland Waters, Sea Ice, and Land Ice |
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Journal |
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Year |
2023 |
Publication |
Remote Sensing |
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Volume |
15 |
Issue |
19 |
Pages |
4826 |
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FRM inland water surface height land ice height S3 land STM SAR altimeter sea ice thickness uncertainties |
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The Copernicus Sentinel-3 Surface Topography Mission (STM) Land Altimetry provides valuable surface elevation information over inland waters, sea ice, and land ice, thanks to its synthetic aperture radar (SAR) altimeter and its orbit that covers high-latitude polar regions. To ensure that these measurements are reliable and to maximise the return on investment, adequate validation of the geophysical retrieval methods, processing algorithms, and corrections must be performed using independent observations. The EU-ESA project St3TART (started July 2021) aims to generalise the concept of Fiducial Reference Measurements (FRMs) for the Copernicus Sentinel-3 STM. This work has gathered existing data, made new observations during field campaigns, and ensured that these observations meet the criteria of FRM standards so that they can be used to validate Sentinel-3 STM Land Altimetry products operationally. A roadmap for the operational provision of the FRM, including the definition, consolidation, and identification of the most relevant and cost-effective methods and protocols to be maintained, supported, or implemented, has been developed. The roadmap includes guidelines for SI traceability, definitions of FRM measurement procedures, processing methods, and uncertainty budget estimations. |
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411 |
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2072-4292 |
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2072-4292 |
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8698 |
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Journal Article |
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Year |
2012 |
Publication |
MARINE BIOLOGY |
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Volume |
159 |
Issue |
8 |
Pages |
1843-1852 |
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Keywords |
Freshwater & Marine Ecology, Marine & Freshwater Sciences, Microbiology, Oceanography, Zoology, |
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Abstract |
Knowledge of habitat use by top marine predators in response to environmental conditions is crucial in the current context of global changes occurring in the Southern Ocean. We examined the at-sea locations of male Ad,lie penguins (Pygoscelis adeliae) breeding at Dumont d'Urville during their first, long incubation trip. Compared with the chick-rearing period, penguins performed longer trips, going to oceanic waters as far as 320 km from the colony. We observed 3 strategies: (1) five individuals covered large distances to the north, targeting open-ocean areas and following the currents of two persistent eddies; (2) five individuals foraged to the north-west, close to the Antarctic shelf slope at the limit of the pack ice; and (3) three individuals covered much shorter distances (northwards or eastwards). The foraging range also seemed to be limited by the body condition of the penguins before their departure to sea. |
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1091 |
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Bachelor's thesis |
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0025-3162 |
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yes |
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4285 |
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Title |
Patterns, processes and vulnerability of Southern Ocean benthos: a decadal leap in knowledge and understanding
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Journal Article |
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Year |
2013 |
Publication |
MARINE BIOLOGY |
Abbreviated Journal |
Mar. Biol. |
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Volume |
160 |
Issue |
9 |
Pages |
2295-2317 |
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Keywords |
Freshwater & Marine Ecology, Marine & Freshwater Sciences, Microbiology, Oceanography, Zoology, |
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1044;1124 |
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Bachelor's thesis |
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0025-3162 |
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yes |
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4308 |
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Title |
Lipid components as a measure of nutritional condition in fish larvae (Pleuragramma antarcticum) in East Antarctica
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Journal Article |
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Year |
2013 |
Publication |
MARINE BIOLOGY |
Abbreviated Journal |
Mar Biol |
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Volume |
160 |
Issue |
4 |
Pages |
877-887 |
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Keywords |
Freshwater & Marine Ecology, Marine & Freshwater Sciences, Microbiology, Oceanography, Zoology, |
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Programme |
1142 |
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Bachelor's thesis |
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0025-3162 |
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yes |
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4396 |
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Author |
Chaigne Adrien, Authier Matthieu, Richard Pierre, Cherel Yves, Guinet Christophe, |
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Title |
Shift in foraging grounds and diet broadening during ontogeny in southern elephant seals from Kerguelen Islands
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Journal Article |
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Year |
2013 |
Publication |
MARINE BIOLOGY |
Abbreviated Journal |
Mar. Biol. |
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Volume |
160 |
Issue |
4 |
Pages |
977-986 |
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Keywords |
Freshwater & Marine Ecology, Marine & Freshwater Sciences, Microbiology, Oceanography, Zoology, |
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109 |
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Bachelor's thesis |
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0025-3162 |
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yes |
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4402 |
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Title |
How age and sex drive the foraging behaviour in the king penguin
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Journal Article |
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Year |
2013 |
Publication |
MARINE BIOLOGY |
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Volume |
160 |
Issue |
5 |
Pages |
1147-1156 |
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Keywords |
Freshwater & Marine Ecology, Marine & Freshwater Sciences, Microbiology, Oceanography, Zoology, |
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137 |
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Bachelor's thesis |
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0025-3162 |
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yes |
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4464 |
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Title |
Millimeter-Wave Radar Sensor for Snow Height Measurements |
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2017 |
Publication |
IEEE Transactions on Geoscience and Remote Sensing |
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Volume |
55 |
Issue |
2 |
Pages |
854-861 |
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Keywords |
Frequency-modulated continuous-wave (FMCW) radar high accuracy Laser radar Measurement by laser beam millimeter wave Millimeter wave radar Radar measurements range detection Snow snow height snow thickness Temperature measurement |
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1015 |
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1558-0644 |
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8161 |
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Author |
ZalianCyrus, ChadidMerieme, |
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Title |
Antarctica photometric survey using PDM13
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Conference - International - Article with Reading Comitee |
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Year |
2013 |
Publication |
Proceedings of the International Astronomical Union |
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9 |
Issue |
Symposium S301 |
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511-512 |
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Keywords |
Frequency analysis, phase dispersion minimization, graphical interface, Antarctica photometric survey, |
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Abstract |
PDM13 is a new graphic interface program dedicated to frequency domain analysis based on the Phase Dispersion Minimization technique (PDM, Stellingwerf 2012). In this paper, we will present the different algorithms running in PDM13, including the Auto-Segmentation, the Gauss-Newton and the PDM algorithms. More details on this triptych are available in our recent paper (Zalian et al., submitted). Their aim is to offer a simple and powerful way to extract frequency. Amongst the numerous improvements offered by the program, we will particularly focus on the reduction of aliases and the ability to look directly for multiple-period phenomena and the Blazhko effect. After that, we will show the first results from PDM13 using the Antarctica photometric survey. |
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1096 |
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4908 |
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Title |
Interacting effects of unobserved heterogeneity and individual stochasticity in the life history of the southern fulmar |
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Year |
2017 |
Publication |
Journal of Animal Ecology |
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Volume |
87 |
Issue |
1 |
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212-222 |
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Keywords |
frailty individual quality latent life expectancy lifetime reproductive success |
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109 |
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1365-2656 |
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1365-2656 |
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7165 |
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