Characterization of snowfall estimated by in situ and ground-based remote-sensing observations at Terra Nova Bay, Victoria Land, Antarctica
Abstract Knowledge of the precipitation contribution to the Antarctic surface mass balance is essential for defining the ice-sheet contribution to sea-level rise. Observations of precipitation are sparse over Antarctica, due to harsh environmental conditions. Precipitation during the summer months (...
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Online Access: | http://dx.doi.org/10.1017/jog.2020.70 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020000702 |
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crcambridgeupr:10.1017/jog.2020.70 2024-09-30T14:26:28+00:00 Characterization of snowfall estimated by in situ and ground-based remote-sensing observations at Terra Nova Bay, Victoria Land, Antarctica Scarchilli, Claudio Ciardini, Virginia Grigioni, Paolo Iaccarino, Antonio De Silvestri, Lorenzo Proposito, Marco Dolci, Stefano Camporeale, Giuseppe Schioppo, Riccardo Antonelli, Adriano Baldini, Luca Roberto, Nicoletta Argentini, Stefania Bracci, Alessandro Frezzotti, Massimo 2020 http://dx.doi.org/10.1017/jog.2020.70 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020000702 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 66, issue 260, page 1006-1023 ISSN 0022-1430 1727-5652 journal-article 2020 crcambridgeupr https://doi.org/10.1017/jog.2020.70 2024-09-11T04:05:07Z Abstract Knowledge of the precipitation contribution to the Antarctic surface mass balance is essential for defining the ice-sheet contribution to sea-level rise. Observations of precipitation are sparse over Antarctica, due to harsh environmental conditions. Precipitation during the summer months (November–December–January) on four expeditions, 2015–16, 2016–17, 2017–18 and 2018–19, in the Terra Nova Bay area, were monitored using a vertically pointing radar, disdrometer, snow gauge, radiosounding and an automatic weather station installed at the Italian Mario Zucchelli Station. The relationship between radar reflectivity and precipitation rate at the site can be estimated using these instruments jointly. The error in calculated precipitation is up to 40%, mostly dependent on reflectivity variability and disdrometer inability to define the real particle fall velocity. Mean derived summer precipitation is ~55 mm water equivalent but with a large variability. During collocated measurements in 2018–19, corrected snow gauge amounts agree with those derived from the relationship, within the estimated errors. European Centre for the Medium-Range Weather Forecasts (ECMWF) and the Antarctic Mesoscale Prediction System (AMPS) analysis and operational outputs are able to forecast the precipitation timing but do not adequately reproduce quantities during the most intense events, with overestimation for ECMWF and underestimation for AMPS. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Journal of Glaciology Victoria Land Cambridge University Press Antarctic The Antarctic Victoria Land Terra Nova Bay Mario Zucchelli ENVELOPE(164.123,164.123,-74.695,-74.695) Mario Zucchelli Station ENVELOPE(164.117,164.117,-74.700,-74.700) Journal of Glaciology 66 260 1006 1023 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract Knowledge of the precipitation contribution to the Antarctic surface mass balance is essential for defining the ice-sheet contribution to sea-level rise. Observations of precipitation are sparse over Antarctica, due to harsh environmental conditions. Precipitation during the summer months (November–December–January) on four expeditions, 2015–16, 2016–17, 2017–18 and 2018–19, in the Terra Nova Bay area, were monitored using a vertically pointing radar, disdrometer, snow gauge, radiosounding and an automatic weather station installed at the Italian Mario Zucchelli Station. The relationship between radar reflectivity and precipitation rate at the site can be estimated using these instruments jointly. The error in calculated precipitation is up to 40%, mostly dependent on reflectivity variability and disdrometer inability to define the real particle fall velocity. Mean derived summer precipitation is ~55 mm water equivalent but with a large variability. During collocated measurements in 2018–19, corrected snow gauge amounts agree with those derived from the relationship, within the estimated errors. European Centre for the Medium-Range Weather Forecasts (ECMWF) and the Antarctic Mesoscale Prediction System (AMPS) analysis and operational outputs are able to forecast the precipitation timing but do not adequately reproduce quantities during the most intense events, with overestimation for ECMWF and underestimation for AMPS. |
format |
Article in Journal/Newspaper |
author |
Scarchilli, Claudio Ciardini, Virginia Grigioni, Paolo Iaccarino, Antonio De Silvestri, Lorenzo Proposito, Marco Dolci, Stefano Camporeale, Giuseppe Schioppo, Riccardo Antonelli, Adriano Baldini, Luca Roberto, Nicoletta Argentini, Stefania Bracci, Alessandro Frezzotti, Massimo |
spellingShingle |
Scarchilli, Claudio Ciardini, Virginia Grigioni, Paolo Iaccarino, Antonio De Silvestri, Lorenzo Proposito, Marco Dolci, Stefano Camporeale, Giuseppe Schioppo, Riccardo Antonelli, Adriano Baldini, Luca Roberto, Nicoletta Argentini, Stefania Bracci, Alessandro Frezzotti, Massimo Characterization of snowfall estimated by in situ and ground-based remote-sensing observations at Terra Nova Bay, Victoria Land, Antarctica |
author_facet |
Scarchilli, Claudio Ciardini, Virginia Grigioni, Paolo Iaccarino, Antonio De Silvestri, Lorenzo Proposito, Marco Dolci, Stefano Camporeale, Giuseppe Schioppo, Riccardo Antonelli, Adriano Baldini, Luca Roberto, Nicoletta Argentini, Stefania Bracci, Alessandro Frezzotti, Massimo |
author_sort |
Scarchilli, Claudio |
title |
Characterization of snowfall estimated by in situ and ground-based remote-sensing observations at Terra Nova Bay, Victoria Land, Antarctica |
title_short |
Characterization of snowfall estimated by in situ and ground-based remote-sensing observations at Terra Nova Bay, Victoria Land, Antarctica |
title_full |
Characterization of snowfall estimated by in situ and ground-based remote-sensing observations at Terra Nova Bay, Victoria Land, Antarctica |
title_fullStr |
Characterization of snowfall estimated by in situ and ground-based remote-sensing observations at Terra Nova Bay, Victoria Land, Antarctica |
title_full_unstemmed |
Characterization of snowfall estimated by in situ and ground-based remote-sensing observations at Terra Nova Bay, Victoria Land, Antarctica |
title_sort |
characterization of snowfall estimated by in situ and ground-based remote-sensing observations at terra nova bay, victoria land, antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/jog.2020.70 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143020000702 |
long_lat |
ENVELOPE(164.123,164.123,-74.695,-74.695) ENVELOPE(164.117,164.117,-74.700,-74.700) |
geographic |
Antarctic The Antarctic Victoria Land Terra Nova Bay Mario Zucchelli Mario Zucchelli Station |
geographic_facet |
Antarctic The Antarctic Victoria Land Terra Nova Bay Mario Zucchelli Mario Zucchelli Station |
genre |
Antarc* Antarctic Antarctica Ice Sheet Journal of Glaciology Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Journal of Glaciology Victoria Land |
op_source |
Journal of Glaciology volume 66, issue 260, page 1006-1023 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2020.70 |
container_title |
Journal of Glaciology |
container_volume |
66 |
container_issue |
260 |
container_start_page |
1006 |
op_container_end_page |
1023 |
_version_ |
1811646790530760704 |