Nitric acid measurements at Eureka obtained in winter 2001-2002 using solar and lunar Fourier transform infrared absorption spectroscopy: Comparisons with observations at Thule and Kiruna and with results from three-dimensional models
For the first time, vertical column measurements of nitric acid (HNO₂) above Eureka (80.1°N, 86.4°W), Canada, have been made during polar night using lunar spectra recorded with a Fourier transform infrared (FTIR) spectrometer, from October 2001 to March 2002. This site is part of the primary Arctic...
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Language: | English |
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American Geophysical Union
2007
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-931 https://doi.org/10.1029/2006JD007096 |
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ftncar:oai:drupal-site.org:articles_6635 2023-10-01T03:53:45+02:00 Nitric acid measurements at Eureka obtained in winter 2001-2002 using solar and lunar Fourier transform infrared absorption spectroscopy: Comparisons with observations at Thule and Kiruna and with results from three-dimensional models Farahani, Elham (author) Fast, H. (author) Mittermeier, R. (author) Makino, Y. (author) Strong, K. (author) McLandress, C. (author) Shepherd, T. (author) Chipperfield, M. (author) Hannigan, James (author) Coffey, Michael (author) Mikuteit, S. (author) Hase, F. (author) Blumenstock, T. (author) Raffalski, U. (author) 2007-01-09 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-931 https://doi.org/10.1029/2006JD007096 en eng American Geophysical Union Journal of Geophysical Research http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-931 doi:10.1029/2006JD007096 ark:/85065/d73f4pvj Copyright 2007 American Geophysical Union. Text article 2007 ftncar https://doi.org/10.1029/2006JD007096 2023-09-04T18:22:24Z For the first time, vertical column measurements of nitric acid (HNO₂) above Eureka (80.1°N, 86.4°W), Canada, have been made during polar night using lunar spectra recorded with a Fourier transform infrared (FTIR) spectrometer, from October 2001 to March 2002. This site is part of the primary Arctic station of the Network for the Detection of Stratospheric Change. These measurements were compared with FTIR measurements at two other Arctic sites: Thule, Greenland (76.5°N, 68.8°W), and Kiruna, Sweden (67.8°N, 20.4°E). Eureka lunar measurements are in good agreement with solar ones made with the same instrument. Eureka and Thule HNO₃ columns are consistent within measurement error. Differences between HNO₃ columns at Kiruna and those at Eureka and Thule can be explained on the basis of available sunlight hours and location of the polar vortex. The measurements were also compared with results from a chemistry-climate model, the Canadian Middle Atmosphere Model (CMAM), and from a three-dimensional chemical transport model, SLIMCAT. This is the first time that CMAM HNO₃ columns have been compared with observations in the Arctic. The comparison of CMAM HNO₃ columns with Eureka and Kiruna data shows good agreement. The warm 2001-2002 winter with almost no polar stratospheric clouds makes the comparison with this version of CMAM, which has a known warm bias, a good test for CMAM under these conditions. SLIMCAT captures the magnitude of HNO₃ columns at Eureka, and the day-to-day variability, but generally reports higher values than were measured at Thule and Kiruna. Article in Journal/Newspaper Arctic Greenland Kiruna polar night Thule OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Canada Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) Greenland Kiruna Journal of Geophysical Research 112 D1 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
For the first time, vertical column measurements of nitric acid (HNO₂) above Eureka (80.1°N, 86.4°W), Canada, have been made during polar night using lunar spectra recorded with a Fourier transform infrared (FTIR) spectrometer, from October 2001 to March 2002. This site is part of the primary Arctic station of the Network for the Detection of Stratospheric Change. These measurements were compared with FTIR measurements at two other Arctic sites: Thule, Greenland (76.5°N, 68.8°W), and Kiruna, Sweden (67.8°N, 20.4°E). Eureka lunar measurements are in good agreement with solar ones made with the same instrument. Eureka and Thule HNO₃ columns are consistent within measurement error. Differences between HNO₃ columns at Kiruna and those at Eureka and Thule can be explained on the basis of available sunlight hours and location of the polar vortex. The measurements were also compared with results from a chemistry-climate model, the Canadian Middle Atmosphere Model (CMAM), and from a three-dimensional chemical transport model, SLIMCAT. This is the first time that CMAM HNO₃ columns have been compared with observations in the Arctic. The comparison of CMAM HNO₃ columns with Eureka and Kiruna data shows good agreement. The warm 2001-2002 winter with almost no polar stratospheric clouds makes the comparison with this version of CMAM, which has a known warm bias, a good test for CMAM under these conditions. SLIMCAT captures the magnitude of HNO₃ columns at Eureka, and the day-to-day variability, but generally reports higher values than were measured at Thule and Kiruna. |
author2 |
Farahani, Elham (author) Fast, H. (author) Mittermeier, R. (author) Makino, Y. (author) Strong, K. (author) McLandress, C. (author) Shepherd, T. (author) Chipperfield, M. (author) Hannigan, James (author) Coffey, Michael (author) Mikuteit, S. (author) Hase, F. (author) Blumenstock, T. (author) Raffalski, U. (author) |
format |
Article in Journal/Newspaper |
title |
Nitric acid measurements at Eureka obtained in winter 2001-2002 using solar and lunar Fourier transform infrared absorption spectroscopy: Comparisons with observations at Thule and Kiruna and with results from three-dimensional models |
spellingShingle |
Nitric acid measurements at Eureka obtained in winter 2001-2002 using solar and lunar Fourier transform infrared absorption spectroscopy: Comparisons with observations at Thule and Kiruna and with results from three-dimensional models |
title_short |
Nitric acid measurements at Eureka obtained in winter 2001-2002 using solar and lunar Fourier transform infrared absorption spectroscopy: Comparisons with observations at Thule and Kiruna and with results from three-dimensional models |
title_full |
Nitric acid measurements at Eureka obtained in winter 2001-2002 using solar and lunar Fourier transform infrared absorption spectroscopy: Comparisons with observations at Thule and Kiruna and with results from three-dimensional models |
title_fullStr |
Nitric acid measurements at Eureka obtained in winter 2001-2002 using solar and lunar Fourier transform infrared absorption spectroscopy: Comparisons with observations at Thule and Kiruna and with results from three-dimensional models |
title_full_unstemmed |
Nitric acid measurements at Eureka obtained in winter 2001-2002 using solar and lunar Fourier transform infrared absorption spectroscopy: Comparisons with observations at Thule and Kiruna and with results from three-dimensional models |
title_sort |
nitric acid measurements at eureka obtained in winter 2001-2002 using solar and lunar fourier transform infrared absorption spectroscopy: comparisons with observations at thule and kiruna and with results from three-dimensional models |
publisher |
American Geophysical Union |
publishDate |
2007 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-931 https://doi.org/10.1029/2006JD007096 |
long_lat |
ENVELOPE(-85.940,-85.940,79.990,79.990) |
geographic |
Arctic Canada Eureka Greenland Kiruna |
geographic_facet |
Arctic Canada Eureka Greenland Kiruna |
genre |
Arctic Greenland Kiruna polar night Thule |
genre_facet |
Arctic Greenland Kiruna polar night Thule |
op_relation |
Journal of Geophysical Research http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-003-931 doi:10.1029/2006JD007096 ark:/85065/d73f4pvj |
op_rights |
Copyright 2007 American Geophysical Union. |
op_doi |
https://doi.org/10.1029/2006JD007096 |
container_title |
Journal of Geophysical Research |
container_volume |
112 |
container_issue |
D1 |
_version_ |
1778520583831552000 |