Modified HNO3 seasonality in volcanic layers of a polar ice core - Snow-pack effect or photochemical perturbation?

Changes in atmospheric HNO3 chemistry following the Laki (1783), Tambora (1815), and Katmai (1912) volcanic eruptions are presently investigated in view of a central Greenland ice core's chemical composition. Attention is given to the concentration of several cations and anions, using ion chrom...

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Bibliographic Details
Main Authors: Laj, Paolo, Palais, Julie M., Gardner, James E., Sigurdsson, Haraldur
Format: Other/Unknown Material
Language:unknown
Published: 1993
Subjects:
46
Arctic
Greenland
Laki
ice core
Online Access:http://ntrs.nasa.gov/search.jsp?R=19930054325
id ftnasantrs:oai:casi.ntrs.nasa.gov:19930054325
record_format openpolar
spelling ftnasantrs:oai:casi.ntrs.nasa.gov:19930054325 2023-05-15T14:59:42+02:00 Modified HNO3 seasonality in volcanic layers of a polar ice core - Snow-pack effect or photochemical perturbation? Laj, Paolo Palais, Julie M. Gardner, James E. Sigurdsson, Haraldur Unclassified, Unlimited, Publicly available April 1993 http://ntrs.nasa.gov/search.jsp?R=19930054325 unknown http://ntrs.nasa.gov/search.jsp?R=19930054325 Accession ID: 93A38322 Copyright Other Sources 46 Journal of Atmospheric Chemistry; 16; 3; p. 219-230. 1993 ftnasantrs 2012-02-15T20:08:36Z Changes in atmospheric HNO3 chemistry following the Laki (1783), Tambora (1815), and Katmai (1912) volcanic eruptions are presently investigated in view of a central Greenland ice core's chemical composition. Attention is given to the concentration of several cations and anions, using ion chromatography. Following the eruptions, the ratio of winter to summer depositions of NO3(-) was significantly higher than during nonvolcanic periods. While this may be due to ice pack effects, it is proposed that large concentrations of the stratospheric H2SO4 particles ejected by the volcanoes favored HNO3 removal during Arctic winter. Other/Unknown Material Arctic Greenland ice core NASA Technical Reports Server (NTRS) Arctic Greenland Laki ENVELOPE(-18.237,-18.237,64.070,64.070)
institution Open Polar
collection NASA Technical Reports Server (NTRS)
op_collection_id ftnasantrs
language unknown
topic 46
spellingShingle 46
Laj, Paolo
Palais, Julie M.
Gardner, James E.
Sigurdsson, Haraldur
Modified HNO3 seasonality in volcanic layers of a polar ice core - Snow-pack effect or photochemical perturbation?
topic_facet 46
description Changes in atmospheric HNO3 chemistry following the Laki (1783), Tambora (1815), and Katmai (1912) volcanic eruptions are presently investigated in view of a central Greenland ice core's chemical composition. Attention is given to the concentration of several cations and anions, using ion chromatography. Following the eruptions, the ratio of winter to summer depositions of NO3(-) was significantly higher than during nonvolcanic periods. While this may be due to ice pack effects, it is proposed that large concentrations of the stratospheric H2SO4 particles ejected by the volcanoes favored HNO3 removal during Arctic winter.
format Other/Unknown Material
author Laj, Paolo
Palais, Julie M.
Gardner, James E.
Sigurdsson, Haraldur
author_facet Laj, Paolo
Palais, Julie M.
Gardner, James E.
Sigurdsson, Haraldur
author_sort Laj, Paolo
title Modified HNO3 seasonality in volcanic layers of a polar ice core - Snow-pack effect or photochemical perturbation?
title_short Modified HNO3 seasonality in volcanic layers of a polar ice core - Snow-pack effect or photochemical perturbation?
title_full Modified HNO3 seasonality in volcanic layers of a polar ice core - Snow-pack effect or photochemical perturbation?
title_fullStr Modified HNO3 seasonality in volcanic layers of a polar ice core - Snow-pack effect or photochemical perturbation?
title_full_unstemmed Modified HNO3 seasonality in volcanic layers of a polar ice core - Snow-pack effect or photochemical perturbation?
title_sort modified hno3 seasonality in volcanic layers of a polar ice core - snow-pack effect or photochemical perturbation?
publishDate 1993
url http://ntrs.nasa.gov/search.jsp?R=19930054325
op_coverage Unclassified, Unlimited, Publicly available
long_lat ENVELOPE(-18.237,-18.237,64.070,64.070)
geographic Arctic
Greenland
Laki
geographic_facet Arctic
Greenland
Laki
genre Arctic
Greenland
ice core
genre_facet Arctic
Greenland
ice core
op_source Other Sources
op_relation http://ntrs.nasa.gov/search.jsp?R=19930054325
Accession ID: 93A38322
op_rights Copyright
_version_ 1766331806373642240

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