SMOS and SMAP combined SSS L3 maps over the Chukchi and the Beaufort seas during summer 2019
SSS weekly fields are derived from SMOS and SMAP measurements from June to September 2019. SMOS SSS is from a modified version of the CEC-LOCEAN L3 Arctic, distributed by the “Centre Aval de Traitement des Données SMOS” (CATDS; Supply et al., 2020). In this new version, the SMOS level 2 SSS are from...
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ftseanoe:oai:seanoe.org:87747 2023-05-15T14:58:01+02:00 SMOS and SMAP combined SSS L3 maps over the Chukchi and the Beaufort seas during summer 2019 Supply, Alexandre Boutin, Jacqueline Kolodziejczyk, Nicolas Reverdin, Gilles Lique, Camille Vergely, Jean-luc Perrot, Xavier 2022 https://doi.org/10.17882/87747 https://www.seanoe.org/data/00765/87747/ unknown SEANOE doi:10.17882/87747 https://doi.org/10.17882/87747 https://www.seanoe.org/data/00765/87747/ CC-BY-NC-ND CC-BY-NC-ND Sea Surface Salinity SMOS SMAP Arctic Ocean Meltwater lenses dataset 2022 ftseanoe https://doi.org/10.17882/87747 2022-12-14T17:22:05Z SSS weekly fields are derived from SMOS and SMAP measurements from June to September 2019. SMOS SSS is from a modified version of the CEC-LOCEAN L3 Arctic, distributed by the “Centre Aval de Traitement des Données SMOS” (CATDS; Supply et al., 2020). In this new version, the SMOS level 2 SSS are from the ESA Climate Change Initiative (CCI) v3.2 reprocessing described in Perrot et al. (2021). In comparison with level 2 SSS used in Supply et al. (2020): - SSS is computed with an updated dielectric constant parametrization (Boutin et al., 2020). - SMOS vicarious calibration, the so-called Ocean Target Transformation, is derived using Argo optimal interpolated SSS (Gaillard et al., 2016) instead of a climatology. - SST and wind speed used as priors in the SSS retrieval are taken from European Centre for Medium-Range Weather Forecasts (ECMWF) ERA5 instead of ECMWF forecasted fields. - Updated sea ice filtering derived from the difference between SMOS retrieved pseudo dielectric constant (Acard parameter) and the one expected from retrieved SSS and SST: instead of being applied only at level 3, sea ice filtering is applied both at level 2 (swath product) and at level 3 (weekly averaged product). SSS is derived with a correction of SST-induced bias using Remote Sensing Systems (RSS) SST. SMOS SSS are averaged over 9 days on a 25km Equal-Area Scalable Earth (EASE) 2.0 grid adapted to polar areas. These fields have an effective spatial resolution close to 50 km, corresponding to the original resolution of SMOS SSS (no spatial interpolation is applied from level 2 to level 3). Given the difficulty to find a reference to adjust absolute SSS values in the Arctic Ocean, this product does not contain any Land Sea Contamination (LSC) correction; nevertheless, in the averaging process, SMOS SSS is weighted by the Chi2 of the retrieval, and we expect it to be degraded on SMOS dwell lines largely contaminated by LSC. SMAP SSS is from the Jet Propulsion Laboratory (JPL; Fore et al., 2020) version 4.3 8-day averaged SSS provided on ... Dataset Arctic Arctic Ocean Chukchi Climate change Sea ice SEANOE (Sea scientific open data publication) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
SEANOE (Sea scientific open data publication) |
op_collection_id |
ftseanoe |
language |
unknown |
topic |
Sea Surface Salinity SMOS SMAP Arctic Ocean Meltwater lenses |
spellingShingle |
Sea Surface Salinity SMOS SMAP Arctic Ocean Meltwater lenses Supply, Alexandre Boutin, Jacqueline Kolodziejczyk, Nicolas Reverdin, Gilles Lique, Camille Vergely, Jean-luc Perrot, Xavier SMOS and SMAP combined SSS L3 maps over the Chukchi and the Beaufort seas during summer 2019 |
topic_facet |
Sea Surface Salinity SMOS SMAP Arctic Ocean Meltwater lenses |
description |
SSS weekly fields are derived from SMOS and SMAP measurements from June to September 2019. SMOS SSS is from a modified version of the CEC-LOCEAN L3 Arctic, distributed by the “Centre Aval de Traitement des Données SMOS” (CATDS; Supply et al., 2020). In this new version, the SMOS level 2 SSS are from the ESA Climate Change Initiative (CCI) v3.2 reprocessing described in Perrot et al. (2021). In comparison with level 2 SSS used in Supply et al. (2020): - SSS is computed with an updated dielectric constant parametrization (Boutin et al., 2020). - SMOS vicarious calibration, the so-called Ocean Target Transformation, is derived using Argo optimal interpolated SSS (Gaillard et al., 2016) instead of a climatology. - SST and wind speed used as priors in the SSS retrieval are taken from European Centre for Medium-Range Weather Forecasts (ECMWF) ERA5 instead of ECMWF forecasted fields. - Updated sea ice filtering derived from the difference between SMOS retrieved pseudo dielectric constant (Acard parameter) and the one expected from retrieved SSS and SST: instead of being applied only at level 3, sea ice filtering is applied both at level 2 (swath product) and at level 3 (weekly averaged product). SSS is derived with a correction of SST-induced bias using Remote Sensing Systems (RSS) SST. SMOS SSS are averaged over 9 days on a 25km Equal-Area Scalable Earth (EASE) 2.0 grid adapted to polar areas. These fields have an effective spatial resolution close to 50 km, corresponding to the original resolution of SMOS SSS (no spatial interpolation is applied from level 2 to level 3). Given the difficulty to find a reference to adjust absolute SSS values in the Arctic Ocean, this product does not contain any Land Sea Contamination (LSC) correction; nevertheless, in the averaging process, SMOS SSS is weighted by the Chi2 of the retrieval, and we expect it to be degraded on SMOS dwell lines largely contaminated by LSC. SMAP SSS is from the Jet Propulsion Laboratory (JPL; Fore et al., 2020) version 4.3 8-day averaged SSS provided on ... |
format |
Dataset |
author |
Supply, Alexandre Boutin, Jacqueline Kolodziejczyk, Nicolas Reverdin, Gilles Lique, Camille Vergely, Jean-luc Perrot, Xavier |
author_facet |
Supply, Alexandre Boutin, Jacqueline Kolodziejczyk, Nicolas Reverdin, Gilles Lique, Camille Vergely, Jean-luc Perrot, Xavier |
author_sort |
Supply, Alexandre |
title |
SMOS and SMAP combined SSS L3 maps over the Chukchi and the Beaufort seas during summer 2019 |
title_short |
SMOS and SMAP combined SSS L3 maps over the Chukchi and the Beaufort seas during summer 2019 |
title_full |
SMOS and SMAP combined SSS L3 maps over the Chukchi and the Beaufort seas during summer 2019 |
title_fullStr |
SMOS and SMAP combined SSS L3 maps over the Chukchi and the Beaufort seas during summer 2019 |
title_full_unstemmed |
SMOS and SMAP combined SSS L3 maps over the Chukchi and the Beaufort seas during summer 2019 |
title_sort |
smos and smap combined sss l3 maps over the chukchi and the beaufort seas during summer 2019 |
publisher |
SEANOE |
publishDate |
2022 |
url |
https://doi.org/10.17882/87747 https://www.seanoe.org/data/00765/87747/ |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Chukchi Climate change Sea ice |
genre_facet |
Arctic Arctic Ocean Chukchi Climate change Sea ice |
op_relation |
doi:10.17882/87747 https://doi.org/10.17882/87747 https://www.seanoe.org/data/00765/87747/ |
op_rights |
CC-BY-NC-ND |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.17882/87747 |
_version_ |
1766330105332760576 |