Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean
There is ongoing debate as to whether the oligotrophic ocean is predominantly net autotrophic and acts as a CO2 sink, or net heterotrophic and therefore acts as a CO2 source to the atmosphere. This quantification is challenging, both spatially and temporally, due to the sparseness of measurements. T...
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Online Access: | http://plymsea.ac.uk/id/eprint/6401/ http://plymsea.ac.uk/id/eprint/6401/1/Tilstone_etal.pdf http://www.sciencedirect.com/science/article/pii/S0034425715001133 https://doi.org/10.1016/j.rse.2015.03.017 |
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ftplymouthml:oai:plymsea.ac.uk:6401 2023-05-15T13:57:46+02:00 Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean Tilstone, GH Xie, Y Robinson, C Serret, P Raitsos, DE Powell, T Aranguren-Gassis, M Garcia-Martin, E Kitidis, V 2015-07-01 text http://plymsea.ac.uk/id/eprint/6401/ http://plymsea.ac.uk/id/eprint/6401/1/Tilstone_etal.pdf http://www.sciencedirect.com/science/article/pii/S0034425715001133 https://doi.org/10.1016/j.rse.2015.03.017 en eng Elsevier http://plymsea.ac.uk/id/eprint/6401/1/Tilstone_etal.pdf Tilstone, GH; Xie, Y; Robinson, C; Serret, P; Raitsos, DE; Powell, T; Aranguren-Gassis, M; Garcia-Martin, E; Kitidis, V. 2015 Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean. Remote Sensing of Environment, 164. 254-269. https://doi.org/10.1016/j.rse.2015.03.017 <https://doi.org/10.1016/j.rse.2015.03.017> cc_by_nc_nd_4 CC-BY-NC-ND Biology Botany Chemistry Earth Observation - Remote Sensing Ecology and Environment Marine Sciences Oceanography Publication - Article PeerReviewed 2015 ftplymouthml https://doi.org/10.1016/j.rse.2015.03.017 2022-09-13T05:48:38Z There is ongoing debate as to whether the oligotrophic ocean is predominantly net autotrophic and acts as a CO2 sink, or net heterotrophic and therefore acts as a CO2 source to the atmosphere. This quantification is challenging, both spatially and temporally, due to the sparseness of measurements. There has been a concerted effort to derive accurate estimates of phytoplankton photosynthesis and primary production from satellite data to fill these gaps; however there have been few satellite estimates of net community production (NCP). In this paper, we compare a number of empirical approaches to estimate NCP from satellite data with in vitro measurements of changes in dissolved O2 concentration at 295 stations in the N and S Atlantic Ocean (including the Antarctic), Greenland and Mediterranean Seas. Algorithms based on power laws between NCP and particulate organic carbon production (POC) derived from 14C uptake tend to overestimate NCP at negative values and underestimate at positive values. An algorithm that includes sea surface temperature (SST) in the power function of NCP and 14C POC has the lowest bias and root-mean square error compared with in vitro measured NCP and is the most accurate algorithm for the Atlantic Ocean. Nearly a 13 year time series of NCP was generated using this algorithm with SeaWiFS data to assess changes over time in different regions and in relation to climate variability. The North Atlantic subtropical and tropical Gyres (NATL) were predominantly net autotrophic from 1998 to 2010 except for boreal autumn/winter, suggesting that the northern hemisphere has remained a net sink for CO2 during this period. The South Atlantic subtropical Gyre (SATL) fluctuated from being net autotrophic in austral spring-summer, to net heterotrophic in austral autumn–winter. Recent decadal trends suggest that the SATL is becoming more of a CO2 source. Over the Atlantic basin, the percentage of satellite pixels with negative NCP was 27%, with the largest contributions from the NATL and SATL during boreal ... Article in Journal/Newspaper Antarc* Antarctic Greenland North Atlantic Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) Antarctic Austral Greenland The Antarctic Remote Sensing of Environment 164 254 269 |
institution |
Open Polar |
collection |
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
op_collection_id |
ftplymouthml |
language |
English |
topic |
Biology Botany Chemistry Earth Observation - Remote Sensing Ecology and Environment Marine Sciences Oceanography |
spellingShingle |
Biology Botany Chemistry Earth Observation - Remote Sensing Ecology and Environment Marine Sciences Oceanography Tilstone, GH Xie, Y Robinson, C Serret, P Raitsos, DE Powell, T Aranguren-Gassis, M Garcia-Martin, E Kitidis, V Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean |
topic_facet |
Biology Botany Chemistry Earth Observation - Remote Sensing Ecology and Environment Marine Sciences Oceanography |
description |
There is ongoing debate as to whether the oligotrophic ocean is predominantly net autotrophic and acts as a CO2 sink, or net heterotrophic and therefore acts as a CO2 source to the atmosphere. This quantification is challenging, both spatially and temporally, due to the sparseness of measurements. There has been a concerted effort to derive accurate estimates of phytoplankton photosynthesis and primary production from satellite data to fill these gaps; however there have been few satellite estimates of net community production (NCP). In this paper, we compare a number of empirical approaches to estimate NCP from satellite data with in vitro measurements of changes in dissolved O2 concentration at 295 stations in the N and S Atlantic Ocean (including the Antarctic), Greenland and Mediterranean Seas. Algorithms based on power laws between NCP and particulate organic carbon production (POC) derived from 14C uptake tend to overestimate NCP at negative values and underestimate at positive values. An algorithm that includes sea surface temperature (SST) in the power function of NCP and 14C POC has the lowest bias and root-mean square error compared with in vitro measured NCP and is the most accurate algorithm for the Atlantic Ocean. Nearly a 13 year time series of NCP was generated using this algorithm with SeaWiFS data to assess changes over time in different regions and in relation to climate variability. The North Atlantic subtropical and tropical Gyres (NATL) were predominantly net autotrophic from 1998 to 2010 except for boreal autumn/winter, suggesting that the northern hemisphere has remained a net sink for CO2 during this period. The South Atlantic subtropical Gyre (SATL) fluctuated from being net autotrophic in austral spring-summer, to net heterotrophic in austral autumn–winter. Recent decadal trends suggest that the SATL is becoming more of a CO2 source. Over the Atlantic basin, the percentage of satellite pixels with negative NCP was 27%, with the largest contributions from the NATL and SATL during boreal ... |
format |
Article in Journal/Newspaper |
author |
Tilstone, GH Xie, Y Robinson, C Serret, P Raitsos, DE Powell, T Aranguren-Gassis, M Garcia-Martin, E Kitidis, V |
author_facet |
Tilstone, GH Xie, Y Robinson, C Serret, P Raitsos, DE Powell, T Aranguren-Gassis, M Garcia-Martin, E Kitidis, V |
author_sort |
Tilstone, GH |
title |
Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean |
title_short |
Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean |
title_full |
Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean |
title_fullStr |
Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean |
title_full_unstemmed |
Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean |
title_sort |
satellite estimates of net community production indicate predominance of net autotrophy in the atlantic ocean |
publisher |
Elsevier |
publishDate |
2015 |
url |
http://plymsea.ac.uk/id/eprint/6401/ http://plymsea.ac.uk/id/eprint/6401/1/Tilstone_etal.pdf http://www.sciencedirect.com/science/article/pii/S0034425715001133 https://doi.org/10.1016/j.rse.2015.03.017 |
geographic |
Antarctic Austral Greenland The Antarctic |
geographic_facet |
Antarctic Austral Greenland The Antarctic |
genre |
Antarc* Antarctic Greenland North Atlantic |
genre_facet |
Antarc* Antarctic Greenland North Atlantic |
op_relation |
http://plymsea.ac.uk/id/eprint/6401/1/Tilstone_etal.pdf Tilstone, GH; Xie, Y; Robinson, C; Serret, P; Raitsos, DE; Powell, T; Aranguren-Gassis, M; Garcia-Martin, E; Kitidis, V. 2015 Satellite estimates of net community production indicate predominance of net autotrophy in the Atlantic Ocean. Remote Sensing of Environment, 164. 254-269. https://doi.org/10.1016/j.rse.2015.03.017 <https://doi.org/10.1016/j.rse.2015.03.017> |
op_rights |
cc_by_nc_nd_4 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.rse.2015.03.017 |
container_title |
Remote Sensing of Environment |
container_volume |
164 |
container_start_page |
254 |
op_container_end_page |
269 |
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1766265651810271232 |