Area-Averaged Surface Moisture Flux over Fragmented Sea Ice: Floe Size Distribution Effects and the Associated Convection Structure within the Atmospheric Boundary Layer
Sea ice fragmentation results in the transformation of the surface from relatively homogeneous to highly heterogeneous. Atmospheric boundary layer (ABL) rapidly responds to those changes through a range of processes which are poorly understood and not parametrized in numerical weather prediction (NW...
Published in: | Atmosphere |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2019
|
Subjects: | |
Online Access: | https://doi.org/10.3390/atmos10110654 https://doaj.org/article/16620dac5bb54e29a5f005723fa35a98 |
id |
ftdoajarticles:oai:doaj.org/article:16620dac5bb54e29a5f005723fa35a98 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:16620dac5bb54e29a5f005723fa35a98 2023-05-15T18:17:08+02:00 Area-Averaged Surface Moisture Flux over Fragmented Sea Ice: Floe Size Distribution Effects and the Associated Convection Structure within the Atmospheric Boundary Layer Marta Wenta Agnieszka Herman 2019-10-01T00:00:00Z https://doi.org/10.3390/atmos10110654 https://doaj.org/article/16620dac5bb54e29a5f005723fa35a98 EN eng MDPI AG https://www.mdpi.com/2073-4433/10/11/654 https://doaj.org/toc/2073-4433 2073-4433 doi:10.3390/atmos10110654 https://doaj.org/article/16620dac5bb54e29a5f005723fa35a98 Atmosphere, Vol 10, Iss 11, p 654 (2019) sea ice-ocean-atmosphere interactions floe size distribution atmospheric boundary layer surface turbulent fluxes Meteorology. Climatology QC851-999 article 2019 ftdoajarticles https://doi.org/10.3390/atmos10110654 2022-12-31T01:03:47Z Sea ice fragmentation results in the transformation of the surface from relatively homogeneous to highly heterogeneous. Atmospheric boundary layer (ABL) rapidly responds to those changes through a range of processes which are poorly understood and not parametrized in numerical weather prediction (NWP) models. The aim of this work is to increase our understanding and develop parametrization of the ABL response to different floe size distributions (FSD). The analysis is based on the results of simulations with the Weather Research and Forecasting model. Results show that FSD determines the distribution and intensity of convection within the ABL through its influence on the atmospheric circulation. Substantial differences between various FSDs are found in the analysis of spatial arrangement and strength of ABL convection. To incorporate those sub-grid effects in the NWP models, a correction factor for the calculation of surface moisture heat flux is developed. It is expressed as a function of floe size, sea ice concentration and wind speed, and enables a correction of the flux computed from area-averaged quantities, as is typically done in NWP models. In general, the presented study sheds some more light on the sea ice−atmosphere interactions and provides the first attempt to parametrize the influence of FSD on the ABL. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles Atmosphere 10 11 654 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea ice-ocean-atmosphere interactions floe size distribution atmospheric boundary layer surface turbulent fluxes Meteorology. Climatology QC851-999 |
spellingShingle |
sea ice-ocean-atmosphere interactions floe size distribution atmospheric boundary layer surface turbulent fluxes Meteorology. Climatology QC851-999 Marta Wenta Agnieszka Herman Area-Averaged Surface Moisture Flux over Fragmented Sea Ice: Floe Size Distribution Effects and the Associated Convection Structure within the Atmospheric Boundary Layer |
topic_facet |
sea ice-ocean-atmosphere interactions floe size distribution atmospheric boundary layer surface turbulent fluxes Meteorology. Climatology QC851-999 |
description |
Sea ice fragmentation results in the transformation of the surface from relatively homogeneous to highly heterogeneous. Atmospheric boundary layer (ABL) rapidly responds to those changes through a range of processes which are poorly understood and not parametrized in numerical weather prediction (NWP) models. The aim of this work is to increase our understanding and develop parametrization of the ABL response to different floe size distributions (FSD). The analysis is based on the results of simulations with the Weather Research and Forecasting model. Results show that FSD determines the distribution and intensity of convection within the ABL through its influence on the atmospheric circulation. Substantial differences between various FSDs are found in the analysis of spatial arrangement and strength of ABL convection. To incorporate those sub-grid effects in the NWP models, a correction factor for the calculation of surface moisture heat flux is developed. It is expressed as a function of floe size, sea ice concentration and wind speed, and enables a correction of the flux computed from area-averaged quantities, as is typically done in NWP models. In general, the presented study sheds some more light on the sea ice−atmosphere interactions and provides the first attempt to parametrize the influence of FSD on the ABL. |
format |
Article in Journal/Newspaper |
author |
Marta Wenta Agnieszka Herman |
author_facet |
Marta Wenta Agnieszka Herman |
author_sort |
Marta Wenta |
title |
Area-Averaged Surface Moisture Flux over Fragmented Sea Ice: Floe Size Distribution Effects and the Associated Convection Structure within the Atmospheric Boundary Layer |
title_short |
Area-Averaged Surface Moisture Flux over Fragmented Sea Ice: Floe Size Distribution Effects and the Associated Convection Structure within the Atmospheric Boundary Layer |
title_full |
Area-Averaged Surface Moisture Flux over Fragmented Sea Ice: Floe Size Distribution Effects and the Associated Convection Structure within the Atmospheric Boundary Layer |
title_fullStr |
Area-Averaged Surface Moisture Flux over Fragmented Sea Ice: Floe Size Distribution Effects and the Associated Convection Structure within the Atmospheric Boundary Layer |
title_full_unstemmed |
Area-Averaged Surface Moisture Flux over Fragmented Sea Ice: Floe Size Distribution Effects and the Associated Convection Structure within the Atmospheric Boundary Layer |
title_sort |
area-averaged surface moisture flux over fragmented sea ice: floe size distribution effects and the associated convection structure within the atmospheric boundary layer |
publisher |
MDPI AG |
publishDate |
2019 |
url |
https://doi.org/10.3390/atmos10110654 https://doaj.org/article/16620dac5bb54e29a5f005723fa35a98 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Atmosphere, Vol 10, Iss 11, p 654 (2019) |
op_relation |
https://www.mdpi.com/2073-4433/10/11/654 https://doaj.org/toc/2073-4433 2073-4433 doi:10.3390/atmos10110654 https://doaj.org/article/16620dac5bb54e29a5f005723fa35a98 |
op_doi |
https://doi.org/10.3390/atmos10110654 |
container_title |
Atmosphere |
container_volume |
10 |
container_issue |
11 |
container_start_page |
654 |
_version_ |
1766191196595552256 |