Observations of Stratospheric NO 2 and O 3 at Thule, Greenland
Scattered sunlight and direct light from the moon was used in two wavelength ranges to measure the total column abundances of stratospheric ozone (O 3 ) and nitrogen dioxide (NO 2 ) at Thule, Greenland (76.5°N), during the period from 29 January to 16 February 1988. The observed O 3 column varied be...
Published in: | Science |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Association for the Advancement of Science (AAAS)
1988
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1126/science.242.4878.555 https://www.science.org/doi/pdf/10.1126/science.242.4878.555 |
id |
craaas:10.1126/science.242.4878.555 |
---|---|
record_format |
openpolar |
spelling |
craaas:10.1126/science.242.4878.555 2024-09-15T17:45:48+00:00 Observations of Stratospheric NO 2 and O 3 at Thule, Greenland Mount, G. H. Solomon, S. Sanders, R. W. Jakoubek, R. O. Schmeltekopf, A. L. 1988 http://dx.doi.org/10.1126/science.242.4878.555 https://www.science.org/doi/pdf/10.1126/science.242.4878.555 en eng American Association for the Advancement of Science (AAAS) Science volume 242, issue 4878, page 555-558 ISSN 0036-8075 1095-9203 journal-article 1988 craaas https://doi.org/10.1126/science.242.4878.555 2024-08-15T04:01:05Z Scattered sunlight and direct light from the moon was used in two wavelength ranges to measure the total column abundances of stratospheric ozone (O 3 ) and nitrogen dioxide (NO 2 ) at Thule, Greenland (76.5°N), during the period from 29 January to 16 February 1988. The observed O 3 column varied between about 325 and 400 Dobson units, and the lower values were observed when the center of the Arctic polar vortex was closest to Thule. This gradient probably indicates that O 3 levels decrease due to dynamical processes near the center of the Arctic vortex and should be considered in attempts to derive trends in O 3 levels. The observed NO 2 levels were also lowest in the center of the Arctic vortex and were sometimes as low as 5 × 10 14 molecules per square centimeter, which is even less than comparable values measured during Antarctic spring, suggesting that significant heterogeneous photochemistry takes place during the Arctic winter as it does in the Antarctic. Article in Journal/Newspaper Antarc* Antarctic Greenland Thule AAAS Resource Center (American Association for the Advancement of Science) Science 242 4878 555 558 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Scattered sunlight and direct light from the moon was used in two wavelength ranges to measure the total column abundances of stratospheric ozone (O 3 ) and nitrogen dioxide (NO 2 ) at Thule, Greenland (76.5°N), during the period from 29 January to 16 February 1988. The observed O 3 column varied between about 325 and 400 Dobson units, and the lower values were observed when the center of the Arctic polar vortex was closest to Thule. This gradient probably indicates that O 3 levels decrease due to dynamical processes near the center of the Arctic vortex and should be considered in attempts to derive trends in O 3 levels. The observed NO 2 levels were also lowest in the center of the Arctic vortex and were sometimes as low as 5 × 10 14 molecules per square centimeter, which is even less than comparable values measured during Antarctic spring, suggesting that significant heterogeneous photochemistry takes place during the Arctic winter as it does in the Antarctic. |
format |
Article in Journal/Newspaper |
author |
Mount, G. H. Solomon, S. Sanders, R. W. Jakoubek, R. O. Schmeltekopf, A. L. |
spellingShingle |
Mount, G. H. Solomon, S. Sanders, R. W. Jakoubek, R. O. Schmeltekopf, A. L. Observations of Stratospheric NO 2 and O 3 at Thule, Greenland |
author_facet |
Mount, G. H. Solomon, S. Sanders, R. W. Jakoubek, R. O. Schmeltekopf, A. L. |
author_sort |
Mount, G. H. |
title |
Observations of Stratospheric NO 2 and O 3 at Thule, Greenland |
title_short |
Observations of Stratospheric NO 2 and O 3 at Thule, Greenland |
title_full |
Observations of Stratospheric NO 2 and O 3 at Thule, Greenland |
title_fullStr |
Observations of Stratospheric NO 2 and O 3 at Thule, Greenland |
title_full_unstemmed |
Observations of Stratospheric NO 2 and O 3 at Thule, Greenland |
title_sort |
observations of stratospheric no 2 and o 3 at thule, greenland |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1988 |
url |
http://dx.doi.org/10.1126/science.242.4878.555 https://www.science.org/doi/pdf/10.1126/science.242.4878.555 |
genre |
Antarc* Antarctic Greenland Thule |
genre_facet |
Antarc* Antarctic Greenland Thule |
op_source |
Science volume 242, issue 4878, page 555-558 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.242.4878.555 |
container_title |
Science |
container_volume |
242 |
container_issue |
4878 |
container_start_page |
555 |
op_container_end_page |
558 |
_version_ |
1810493716702429184 |