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Author |
Edel, L., J.-f. Rysman, C. Claud, C. Palerme, And C. Genthon |
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Title |
Potential of Passive Microwave around 183 GHz for Snowfall Detection in the Arctic |
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Journal |
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Year |
2019 |
Publication |
Remote sensing |
Abbreviated Journal |
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Volume |
11 |
Issue |
19 |
Pages |
2200 |
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Keywords |
snowfall; Arctic; passive microwaves; CloudSat; machine learning |
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1013 |
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Bachelor's thesis |
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2072-4292 |
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yes |
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7718 |
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Author |
Alexander Kokhanovsky, Simon Gascoin, Laurent Arnaud, Ghislain Picard |
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Title |
Retrieval of Snow Albedo and Total Ozone Column from Single-View MSI/S-2 Spectral Reflectance Measurements over Antarctica |
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Journal |
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Year |
2021 |
Publication |
Remote Sensing |
Abbreviated Journal |
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Volume |
13 |
Issue |
21 |
Pages |
4404 |
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Keywords |
albedo inverse problems light scattering radiative transfer snow snow grain size |
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1110 |
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2072-4292 |
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yes |
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8305 |
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Title |
Ground-Based Oblique-View Photogrammetry and Sentinel-1 Spaceborne RADAR Reflectivity Snow Melt Processes Assessment on an Arctic Glacier |
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Journal |
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Year |
2023 |
Publication |
Remote Sensing |
Abbreviated Journal |
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Volume |
15 |
Issue |
7 |
Pages |
1858 |
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Keywords |
arctic cold region hydrology melting processes Sentinel-1 snowpack properties |
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1108 |
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2072-4292 |
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yes |
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8537 |
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Alexander A. Kokhanovsky, Maximillian Brell, Karl Segl, Giovanni Bianchini, Christian Lanconelli, Angelo Lupi, Boyan Petkov, Ghislain Picard, Laurent Arnaud, Robert S. Stone, Sabine Chabrillat |
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Title |
First Retrievals of Surface and Atmospheric Properties Using EnMAP Measurements over Antarctica |
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Journal |
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Year |
2023 |
Publication |
Remote Sensing |
Abbreviated Journal |
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Volume |
15 |
Issue |
12 |
Pages |
3042 |
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Keywords |
ice grain size light scattering radiative transfer snow albedo snow remote sensing |
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Abstract |
The paper presents the first retrievals of clean snow properties using spaceborne hyperspectral observations via the Environmental Mapping and Analysis Program (EnMAP). The location close to the Concordia station at the Dome C Plateau (Antarctica) was selected. At this location, the atmospheric effects (except molecular light scattering and absorption) are weak, and the simplified atmospheric correction scheme could be applied. The ice grain size, snow specific surface area, and snow spectral and broadband albedos were retrieved using single-view EnMAP measurements. In addition, we propose a technique to retrieve trace gas concentrations (e.g., water vapor and ozone) from EnMAP observations over the snow surfaces. A close correspondence of satellite and ground-measured parameters was found. |
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1110 |
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2072-4292 |
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yes |
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8548 |
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![find book details (via ISBN) isbn](img/isbn.gif)
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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 |
Abbreviated Journal |
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Volume |
15 |
Issue |
19 |
Pages |
4826 |
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Keywords |
FRM inland water surface height land ice height S3 land STM SAR altimeter sea ice thickness uncertainties |
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Abstract |
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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yes |
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Serial |
8698 |
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Author |
Teten'kin A., Smith H.L., Henry A. |
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Title |
Archaeological evidence for the construction of artificial structures at the Kovrizhka site, Siberia, during the Pleistocene-Holocene transition. |
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Journal Article |
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Year |
2016 |
Publication |
Paleoamerica |
Abbreviated Journal |
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1140 |
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2055-5563 |
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yes |
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Call Number |
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Serial |
6515 |
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Author |
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Title |
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Journal |
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Year |
2022 |
Publication |
PaleoAmerica |
Abbreviated Journal |
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Volume |
8 |
Issue |
1 |
Pages |
29-52 |
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Keywords |
Brazil geofacts Late Glacial Maximum Pedra Furada Peopling of the Americas |
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1217 |
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2055-5563 |
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yes |
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8585 |
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Author |
Barbraud Christophe, Delord Karine, Weimerskirch Henri, |
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Title |
Extreme ecological response of a seabird community to unprecedented sea ice cover.
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Journal Article |
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Year |
2015 |
Publication |
Royal Society open science |
Abbreviated Journal |
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Volume |
2 |
Issue |
5 |
Pages |
140456-140456 |
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109 |
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The Royal Society |
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2054-5703 |
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yes |
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6187 |
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Author |
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Title |
Regional differentiation and extensive hybridization between mitochondrial clades of the Southern Ocean giant sea spider Colossendeis megalonyx.
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Journal Article |
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Year |
2015 |
Publication |
Royal Society open science |
Abbreviated Journal |
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Volume |
2 |
Issue |
7 |
Pages |
140424-140424 |
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Abstract |
Assessing the enormous diversity of Southern Ocean benthic species and their evolutionary histories is a central task in the era of global climate change. Based on mitochondrial markers, it was recently suggested that the circumpolar giant sea spider Colossendeis megalonyx comprises a complex of at least six cryptic species with mostly small and non-overlapping distribution ranges. Here, we expand the sampling to include over 500 mitochondrial COI sequences of specimens from around the Antarctic. Using multiple species delimitation approaches, the number of distinct mitochondrial OTUs increased from six to 15-20 with our larger dataset. In contrast to earlier studies, many of these clades show almost circumpolar distributions. Additionally, analysis of the nuclear internal transcribed spacer region for a subset of these specimens showed incongruence between nuclear and mitochondrial results. These mito-nuclear discordances suggest that several of the divergent mitochondrial lineages can hybridize and should not be interpreted as cryptic species. Our results suggest survival of C. megalonyx during Pleistocene glaciations in multiple refugia, some of them probably located on the Antarctic shelf, and emphasize the importance of multi-gene datasets to detect the presence of cryptic species, rather than their inference based on mitochondrial data alone.
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1124 |
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The Royal Society |
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2054-5703 |
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yes |
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6198 |
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Author |
Kernaléguen Laëtitia, Cherel Yves, Guinet Christophe, Arnould John PY |
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Title |
Mating success and body condition not related to foraging specializations in male fur seals |
Type |
Journal Article |
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Year |
2016 |
Publication |
Royal society open science |
Abbreviated Journal |
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Volume |
3 |
Issue |
7 |
Pages |
160143 |
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Abstract |
Individual specialization is widespread among wild populations. While its fitness consequences are central in predicting the ecological and evolutionary trajectories of populations, they remain poorly understood. Long-term individual foraging specializations occur in male Antarctic (Arctocephalus gazella) and Australian (A. pusillus doriferus) fur seals. Strong selective pressure is expected in these highly dimorphic and polygynous species, raising the question of the fitness payoffs associated with different foraging strategies. We investigated the relationship between individual isotopic niche (a proxy of foraging specialization), body size and condition, and an index of reproductive success (harem size) in territorial males. Individuals varied greatly in their skin and fur isotopic values reflecting a range of foraging strategies within the two populations. However, in both species, isotopic niche was not correlated to body size, condition or mating success (R2/ρ < 0.06). Furthermore, no foraging niche was predominant in either species, which would have indicated a substantial long-term fitness benefit of a particular strategy via a higher survival rate. These results suggest that the fitness consequences of a foraging strategy depend not only on the quality of prey and feeding habitat but also on an individual's hunting efficiency and skills. |
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109 |
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2054-5703 |
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yes |
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6540 |
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Permanent link to this record |