Search Results - "Losa, N"

On the representation error in data assimilation by Janjić, T., Bormann, N., Bocquet, M., Carton, J. A, Cohn, S. E., Dance, S. L., Losa, S. N., Nichols, N. K., Potthast, R., Waller, J. A., Weston, P.

“…Representation, representativity, representativeness error, forward interpolation error, forward model error, observation‐operator error, aggregation error and…”
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Global retrieval of phytoplankton functional types based on empirical orthogonal functions using CMEMS GlobColour merged products and further extension to OLCI data by Xi, Hongyan, Losa, Svetlana N., Mangin, Antoine, Soppa, Mariana A., Garnesson, Philippe, Demaria, Julien, Liu, Yangyang, d'Andon, Odile Hembise Fanton, Bracher, Astrid

“…This study presents an algorithm for globally retrieving chlorophyll a (Chl-a) concentrations of phytoplankton functional types (PFTs) from multi-sensor merged…”
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Improving sea ice thickness estimates by assimilating CryoSat‐2 and SMOS sea ice thickness data simultaneously by Mu, Longjiang, Yang, Qinghua, Losch, Martin, Losa, Svetlana N., Ricker, Robert, Nerger, Lars, Liang, Xi

“…The impact of assimilating weekly CryoSat‐2 sea ice thickness data together with daily SMOS sea ice thickness and daily SSMIS sea ice concentration data on the…”
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Obtaining Phytoplankton Diversity from Ocean Color: A Scientific Roadmap for Future Development by Bracher, Astrid, Bouman, Heather A., Brewin, Robert J. W., Bricaud, Annick, Brotas, Vanda, Ciotti, Aurea M., Clementson, Lesley, Devred, Emmanuel, Di Cicco, Annalisa, Dutkiewicz, Stephanie, Hardman-Mountford, Nick J., Hickman, Anna E., Hieronymi, Martin, Hirata, Takafumi, Losa, Svetlana N., Mouw, Colleen B., Organelli, Emanuele, Raitsos, Dionysios E., Uitz, Julia, Vogt, Meike, Wolanin, Aleksandra

“…To improve our understanding of the role of phytoplankton for marine ecosystems and global biogeochemical cycles, information on the global distribution of…”
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Phytoplankton Light Absorption Impacted by Photoprotective Carotenoids in a Global Ocean Spectrally‐Resolved Biogeochemistry Model by Álvarez, Eva, Losa, Svetlana N., Bracher, Astrid, Thoms, Silke, Völker, Christoph

“…The chlorophyll‐specific absorption spectrum of phytoplankton aPH∗(λ) $\left[{a}_{\mathrm{P}\mathrm{H}}^{\ast }(\lambda )\right]$ multiplied with phytoplankton…”
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Brief communication: The challenge and benefit of using sea ice concentration satellite data products with uncertainty estimates in summer sea ice data assimilation by Yang, Qinghua, Losch, Martin, Losa, Svetlana N, Jung, Thomas, Nerger, Lars, Lavergne, Thomas

“…Data assimilation experiments that aim at improving summer ice concentration and thickness forecasts in the Arctic are carried out. The data assimilation…”
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Assessing the Influence of Water Constituents on the Radiative Heating of Laptev Sea Shelf Waters by Soppa, Mariana A., Pefanis, Vasileios, Hellmann, Sebastian, Losa, Svetlana N., Hölemann, Jens, Martynov, Fedor, Heim, Birgit, Janout, Markus A., Dinter, Tilman, Rozanov, Vladimir, Bracher, Astrid

“…The presence of optically active water constituents is known to attenuate the light penetration in the ocean and impact the ocean heat content. Here, we…”
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Global Assimilation of Ocean‐Color Data of Phytoplankton Functional Types: Impact of Different Data Sets by Pradhan, H. K., Völker, C., Losa, S. N., Bracher, A., Nerger, L.

“…Phytoplankton functional‐type (PFT) data are assimilated into the global coupled ocean‐ecosystem model MITgcm‐REcoM2 for two years using a local ensemble…”
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Synergistic Exploitation of Hyper- and Multi-Spectral Precursor Sentinel Measurements to Determine Phytoplankton Functional Types (SynSenPFT) by Losa, Svetlana N., Soppa, Mariana A., Dinter, Tilman, Wolanin, Aleksandra, Brewin, Robert J. W., Bricaud, Annick, Oelker, Julia, Peeken, Ilka, Gentili, Bernard, Rozanov, Vladimir, Bracher, Astrid

“…We derive the chlorophyll a concentration (Chla) for three main phytoplankton functional types (PFTs) – diatoms, coccolithophores and cyanobacteria – by…”
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Assimilation of Global Total Chlorophyll OC‐CCI Data and Its Impact on Individual Phytoplankton Fields by Pradhan, H. K., Völker, C., Losa, S. N., Bracher, A., Nerger, L.

“…The coupled ocean circulation‐ecosystem model MITgcm‐REcoM2 is used to simulate biogeochemical variables in a global configuration. The ecosystem model REcoM2…”
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TROPOMI-Retrieved Underwater Light Attenuation in Three Spectral Regions in the Ultraviolet and Blue by Oelker, Julia, Losa, Svetlana N., Richter, Andreas, Bracher, Astrid

“…Ultraviolet (UV) radiation plays an important role in the ocean for the biogeochemical cycling through photooxidation of colored dissolved organic matter and…”
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Amplified Arctic Surface Warming and Sea Ice Loss Due to Phytoplankton and Colored Dissolved Material by Pefanis, Vasileios, Losa, Svetlana N., Losch, Martin, Janout, Markus A., Bracher, Astrid

“…Optically active water constituents attenuate solar radiation and hence affect the vertical distribution of energy in the upper ocean. To understand their…”
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Corrigendum: Synergistic Exploitation of Hyper- and Multi-Spectral Precursor Sentinel Measurements to Determine Phytoplankton Functional Types (SynSenPFT) by Losa, Svetlana N., Soppa, Mariana A., Dinter, Tilman, Wolanin, Aleksandra, Brewin, Robert J. W., Bricaud, Annick, Oelker, Julia, Peeken, Ilka, Gentili, Bernard, Rozanov, Vladimir, Bracher, Astrid

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Weak constraint parameter estimation for a simple ocean ecosystem model: what can we learn about the model and data? by Losa, Svetlana N, Kivman, Gennady A, Ryabchenko, Vladimir A

“…Weak constraint parameter estimation is applied to tune a 0-D 4-component (phytoplankton, zooplankton, detritus, dissolved inorganic nitrogen) model for the…”
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Sequential weak constraint parameter estimation in an ecosystem model by Losa, Svetlana N., Kivman, Gennady A., Schröter, Jens, Wenzel, Manfred

“…A Sequential Importance Resampling filter (SIR) is applied to assimilate data of the Bermuda Atlantic Time-Series Study for the period December 1988 to January…”
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The role of atmospheric uncertainty in Arctic summer sea ice data assimilation and prediction by Yang, Qinghua, Losa, Svetlana N., Losch, Martin, Jung, Thomas, Nerger, Lars

“…The role of atmospheric uncertainty for the assimilation and prediction of Arctic sea ice is explored by running the Massachusetts Institute of Technology…”
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Arctic‐Wide Sea Ice Thickness Estimates From Combining Satellite Remote Sensing Data and a Dynamic Ice‐Ocean Model with Data Assimilation During the CryoSat‐2 Period by Mu, Longjiang, Losch, Martin, Yang, Qinghua, Ricker, Robert, Losa, Svetlana N., Nerger, Lars

“…Exploiting the complementary character of CryoSat‐2 and Soil Moisture and Ocean Salinity satellite sea ice thickness products, daily Arctic sea ice thickness…”
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Global Chlorophyll a Concentrations of Phytoplankton Functional Types With Detailed Uncertainty Assessment Using Multisensor Ocean Color and Sea Surface Temperature Satellite Products by Xi, Hongyan, Losa, Svetlana N., Mangin, Antoine, Garnesson, Philippe, Bretagnon, Marine, Demaria, Julien, Soppa, Mariana A., Hembise Fanton d'Andon, Odile, Bracher, Astrid

“…First, we retune an algorithm based on empirical orthogonal functions (EOFs) for globally retrieving the chlorophyll a concentration (Chl‐a) of phytoplankton…”
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Assimilating SMOS sea ice thickness into a coupled ice-ocean model using a local SEIK filter by Yang, Qinghua, Losa, Svetlana N., Losch, Martin, Tian-Kunze, Xiangshan, Nerger, Lars, Liu, Jiping, Kaleschke, Lars, Zhang, Zhanhai

“…The impact of assimilating sea ice thickness data derived from ESA's Soil Moisture and Ocean Salinity (SMOS) satellite together with Special Sensor Microwave…”
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Subcapsular liver hematoma after ERCP by Priego, P, Rodríguez, G, Mena, A, Losa, N, Aguilera, A, Ramiro, C, Lisa, E, Conde, S, Fresneda, V

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