Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide:1. Results from land stations
Between March 1977 and February 1982, 517 samples of air were collected in 51 glass flasks at four stations in the northern hemisphere near the Pacific ocean and at the South Pole. First, the CO2concentration of each sample was determined by nondispersive infrared gas analysis, and then the 13C/12C...
Published in: | Journal of Geophysical Research |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
1983
|
Subjects: | |
Online Access: | https://hdl.handle.net/11370/54a9a03f-d271-47dc-af76-0b710c268468 https://research.rug.nl/en/publications/54a9a03f-d271-47dc-af76-0b710c268468 https://doi.org/10.1029/JC088iC15p10915 https://pure.rug.nl/ws/files/67046545/Mook_et_al_1983_Journal_of_Geophysical_Research_3A_Oceans.pdf |
id |
ftunigroningenpu:oai:pure.rug.nl:publications/54a9a03f-d271-47dc-af76-0b710c268468 |
---|---|
record_format |
openpolar |
spelling |
ftunigroningenpu:oai:pure.rug.nl:publications/54a9a03f-d271-47dc-af76-0b710c268468 2024-06-02T08:14:33+00:00 Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide:1. Results from land stations Mook, Willem G. Koopmans, Marjan Carter, Alane F. Keeling, Charles D. 1983-12-20 application/pdf https://hdl.handle.net/11370/54a9a03f-d271-47dc-af76-0b710c268468 https://research.rug.nl/en/publications/54a9a03f-d271-47dc-af76-0b710c268468 https://doi.org/10.1029/JC088iC15p10915 https://pure.rug.nl/ws/files/67046545/Mook_et_al_1983_Journal_of_Geophysical_Research_3A_Oceans.pdf eng eng https://research.rug.nl/en/publications/54a9a03f-d271-47dc-af76-0b710c268468 info:eu-repo/semantics/openAccess Mook , W G , Koopmans , M , Carter , A F & Keeling , C D 1983 , ' Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide : 1. Results from land stations ' , Journal of geophysical research-Oceans and atmospheres , vol. 88 , no. NC15 , pp. 915-933 . https://doi.org/10.1029/JC088iC15p10915 article 1983 ftunigroningenpu https://doi.org/10.1029/JC088iC15p10915 2024-05-07T19:06:21Z Between March 1977 and February 1982, 517 samples of air were collected in 51 glass flasks at four stations in the northern hemisphere near the Pacific ocean and at the South Pole. First, the CO2concentration of each sample was determined by nondispersive infrared gas analysis, and then the 13C/12C and 18O/16O ratios of the cryogenic extracted CO2 were determined with a triple collector mass spectrometer. For each station the secular trend and seasonal variation in 13C/12C ratio have been established as a function of CO2 concentration. The seasonally adjusted 13C/12C ratio is found to have decreased at a rate of about 0.02‰ per ppm increase in the seasonally adjusted CO2 concentration and to vary with latitude as expected if CO2 is being released by fossil fuel combustion in the northern hemisphere and from ocean water near the equator. At the three northernmost stations (La Jolla, California, at 33°N and two Hawaiian stations near 19°N) the 13C/12C ratio of the CO2 added to and withdrawn from the atmosphere during one annual cycle is circa −29‰ with respect to standard PDB, as expected from the exchange of atmospheric CO2 with the carbon of terrestrial plants. Near the equator at Fanning Island (4°N) the similarly computed 13C/12C ratio is −21‰, while at the South Pole it is about −13‰. This suggests that the seasonal variation in the southern hemisphere and tropics is partially a result of oceanic CO2 exchange. Article in Journal/Newspaper South pole University of Groningen research database Fanning ENVELOPE(-60.632,-60.632,-72.404,-72.404) Pacific South Pole Journal of Geophysical Research 88 C15 10915 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
description |
Between March 1977 and February 1982, 517 samples of air were collected in 51 glass flasks at four stations in the northern hemisphere near the Pacific ocean and at the South Pole. First, the CO2concentration of each sample was determined by nondispersive infrared gas analysis, and then the 13C/12C and 18O/16O ratios of the cryogenic extracted CO2 were determined with a triple collector mass spectrometer. For each station the secular trend and seasonal variation in 13C/12C ratio have been established as a function of CO2 concentration. The seasonally adjusted 13C/12C ratio is found to have decreased at a rate of about 0.02‰ per ppm increase in the seasonally adjusted CO2 concentration and to vary with latitude as expected if CO2 is being released by fossil fuel combustion in the northern hemisphere and from ocean water near the equator. At the three northernmost stations (La Jolla, California, at 33°N and two Hawaiian stations near 19°N) the 13C/12C ratio of the CO2 added to and withdrawn from the atmosphere during one annual cycle is circa −29‰ with respect to standard PDB, as expected from the exchange of atmospheric CO2 with the carbon of terrestrial plants. Near the equator at Fanning Island (4°N) the similarly computed 13C/12C ratio is −21‰, while at the South Pole it is about −13‰. This suggests that the seasonal variation in the southern hemisphere and tropics is partially a result of oceanic CO2 exchange. |
format |
Article in Journal/Newspaper |
author |
Mook, Willem G. Koopmans, Marjan Carter, Alane F. Keeling, Charles D. |
spellingShingle |
Mook, Willem G. Koopmans, Marjan Carter, Alane F. Keeling, Charles D. Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide:1. Results from land stations |
author_facet |
Mook, Willem G. Koopmans, Marjan Carter, Alane F. Keeling, Charles D. |
author_sort |
Mook, Willem G. |
title |
Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide:1. Results from land stations |
title_short |
Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide:1. Results from land stations |
title_full |
Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide:1. Results from land stations |
title_fullStr |
Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide:1. Results from land stations |
title_full_unstemmed |
Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide:1. Results from land stations |
title_sort |
seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide:1. results from land stations |
publishDate |
1983 |
url |
https://hdl.handle.net/11370/54a9a03f-d271-47dc-af76-0b710c268468 https://research.rug.nl/en/publications/54a9a03f-d271-47dc-af76-0b710c268468 https://doi.org/10.1029/JC088iC15p10915 https://pure.rug.nl/ws/files/67046545/Mook_et_al_1983_Journal_of_Geophysical_Research_3A_Oceans.pdf |
long_lat |
ENVELOPE(-60.632,-60.632,-72.404,-72.404) |
geographic |
Fanning Pacific South Pole |
geographic_facet |
Fanning Pacific South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Mook , W G , Koopmans , M , Carter , A F & Keeling , C D 1983 , ' Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric carbon dioxide : 1. Results from land stations ' , Journal of geophysical research-Oceans and atmospheres , vol. 88 , no. NC15 , pp. 915-933 . https://doi.org/10.1029/JC088iC15p10915 |
op_relation |
https://research.rug.nl/en/publications/54a9a03f-d271-47dc-af76-0b710c268468 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/JC088iC15p10915 |
container_title |
Journal of Geophysical Research |
container_volume |
88 |
container_issue |
C15 |
container_start_page |
10915 |
_version_ |
1800738460774957056 |