Influence of Hudson Bay on the carbon dynamics of a Hudson Bay Lowlands coastal site
Eddy covariance (EC) estimates of net ecosystem exchange (NEE) and the surface energy balance were gathered from an elevated peat plateau within the Hudson Bay Lowlands near Churchill, Manitoba, Canada (58°43′46″N, 93°49′57″W) during the growing season of 2007. Data were segregated into onshore and...
Published in: | Arctic Science |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English French |
Published: |
Canadian Science Publishing
2016
|
Subjects: | |
Online Access: | https://doi.org/10.1139/as-2015-0026 https://doaj.org/article/940876aca7584a79902adb1d92c7c8fe |
id |
ftdoajarticles:oai:doaj.org/article:940876aca7584a79902adb1d92c7c8fe |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:940876aca7584a79902adb1d92c7c8fe 2023-05-15T14:23:50+02:00 Influence of Hudson Bay on the carbon dynamics of a Hudson Bay Lowlands coastal site Kristina K. Delidjakova Richard L. Bello Kaz Higuchi Bipin Pokharel 2016-09-01T00:00:00Z https://doi.org/10.1139/as-2015-0026 https://doaj.org/article/940876aca7584a79902adb1d92c7c8fe EN FR eng fre Canadian Science Publishing https://cdnsciencepub.com/doi/10.1139/as-2015-0026 https://doaj.org/toc/2368-7460 doi:10.1139/as-2015-0026 2368-7460 https://doaj.org/article/940876aca7584a79902adb1d92c7c8fe Arctic Science, Vol 2, Iss 3, Pp 142-163 (2016) global warming carbon dioxide photosynthesis respiration Hudson Bay Lowlands advection Environmental sciences GE1-350 Environmental engineering TA170-171 article 2016 ftdoajarticles https://doi.org/10.1139/as-2015-0026 2022-12-30T22:59:52Z Eddy covariance (EC) estimates of net ecosystem exchange (NEE) and the surface energy balance were gathered from an elevated peat plateau within the Hudson Bay Lowlands near Churchill, Manitoba, Canada (58°43′46″N, 93°49′57″W) during the growing season of 2007. Data were segregated into onshore and offshore wind regimes to assess the advective influence of the generally cold and moist Hudson Bay air masses compared to generally warm and dry air masses of nonmarine origin. Monthly average NEE ranged from an uptake of 0.2 µmol·m−2·s−1 in September to 5.6 µmol·m−2·s−1 in July. Over the growing season, onshore winds from Hudson Bay contributed to an average 4.2 °C reduction in air temperature and an NEE increase of 27%. When normalized with respect to sunlight receipt, the ratio of gross primary production to photosynthetically active radiation (GPP/PAR) was 26% stronger for offshore regimes than for onshore, while the ratio of ecosystem respiration to PAR (ER/PAR) was 71% stronger for offshore regimes. It was concluded that GPP maintains the same strength for both wind regimes, while ER is significantly stronger for offshore regimes, resulting in reduced NEE capacity during periods when winds originate from inland. Article in Journal/Newspaper Arctic Churchill Hudson Bay Directory of Open Access Journals: DOAJ Articles Hudson Bay Canada Hudson Arctic Science 2 3 142 163 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
global warming carbon dioxide photosynthesis respiration Hudson Bay Lowlands advection Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
global warming carbon dioxide photosynthesis respiration Hudson Bay Lowlands advection Environmental sciences GE1-350 Environmental engineering TA170-171 Kristina K. Delidjakova Richard L. Bello Kaz Higuchi Bipin Pokharel Influence of Hudson Bay on the carbon dynamics of a Hudson Bay Lowlands coastal site |
topic_facet |
global warming carbon dioxide photosynthesis respiration Hudson Bay Lowlands advection Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
Eddy covariance (EC) estimates of net ecosystem exchange (NEE) and the surface energy balance were gathered from an elevated peat plateau within the Hudson Bay Lowlands near Churchill, Manitoba, Canada (58°43′46″N, 93°49′57″W) during the growing season of 2007. Data were segregated into onshore and offshore wind regimes to assess the advective influence of the generally cold and moist Hudson Bay air masses compared to generally warm and dry air masses of nonmarine origin. Monthly average NEE ranged from an uptake of 0.2 µmol·m−2·s−1 in September to 5.6 µmol·m−2·s−1 in July. Over the growing season, onshore winds from Hudson Bay contributed to an average 4.2 °C reduction in air temperature and an NEE increase of 27%. When normalized with respect to sunlight receipt, the ratio of gross primary production to photosynthetically active radiation (GPP/PAR) was 26% stronger for offshore regimes than for onshore, while the ratio of ecosystem respiration to PAR (ER/PAR) was 71% stronger for offshore regimes. It was concluded that GPP maintains the same strength for both wind regimes, while ER is significantly stronger for offshore regimes, resulting in reduced NEE capacity during periods when winds originate from inland. |
format |
Article in Journal/Newspaper |
author |
Kristina K. Delidjakova Richard L. Bello Kaz Higuchi Bipin Pokharel |
author_facet |
Kristina K. Delidjakova Richard L. Bello Kaz Higuchi Bipin Pokharel |
author_sort |
Kristina K. Delidjakova |
title |
Influence of Hudson Bay on the carbon dynamics of a Hudson Bay Lowlands coastal site |
title_short |
Influence of Hudson Bay on the carbon dynamics of a Hudson Bay Lowlands coastal site |
title_full |
Influence of Hudson Bay on the carbon dynamics of a Hudson Bay Lowlands coastal site |
title_fullStr |
Influence of Hudson Bay on the carbon dynamics of a Hudson Bay Lowlands coastal site |
title_full_unstemmed |
Influence of Hudson Bay on the carbon dynamics of a Hudson Bay Lowlands coastal site |
title_sort |
influence of hudson bay on the carbon dynamics of a hudson bay lowlands coastal site |
publisher |
Canadian Science Publishing |
publishDate |
2016 |
url |
https://doi.org/10.1139/as-2015-0026 https://doaj.org/article/940876aca7584a79902adb1d92c7c8fe |
geographic |
Hudson Bay Canada Hudson |
geographic_facet |
Hudson Bay Canada Hudson |
genre |
Arctic Churchill Hudson Bay |
genre_facet |
Arctic Churchill Hudson Bay |
op_source |
Arctic Science, Vol 2, Iss 3, Pp 142-163 (2016) |
op_relation |
https://cdnsciencepub.com/doi/10.1139/as-2015-0026 https://doaj.org/toc/2368-7460 doi:10.1139/as-2015-0026 2368-7460 https://doaj.org/article/940876aca7584a79902adb1d92c7c8fe |
op_doi |
https://doi.org/10.1139/as-2015-0026 |
container_title |
Arctic Science |
container_volume |
2 |
container_issue |
3 |
container_start_page |
142 |
op_container_end_page |
163 |
_version_ |
1766296308821262336 |