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O 3 and NO 2 ground‐based measurements by visible spectrometry during Arctic winter and spring 1988
Author(s) -
Pommereau Jean Pierre,
Goutail Florence
Publication year - 1988
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl015i008p00891
Subject(s) - ozone , atmospheric sciences , environmental science , arctic , polar night , stratosphere , ozone depletion , climatology , ozone layer , polar , seasonality , spring (device) , advection , nitrogen dioxide , meteorology , geology , oceanography , geography , physics , statistics , mathematics , astronomy , thermodynamics
Ozone and nitrogen dioxide have been monitored by ground‐based visible spectrometry from ESRANGE base at Kiruna in Sweden (68N, 22E) from mid January until early April 1988. Stratospheric winter was exceptionally long and cold this year and spring final warming developed only in March. Ozone column was found to increase slowly during this period from 400 DU to 450 DU in the average. After February 15, several rapid decreases by 30% lasting a few days have been observed in correlation with advection from the North West. They are indicative of the presence of an ozone minimum above polar regions during the period. The diurnal variation amplitude is in agreement with the current NO X photochemistry assuming the NO 2 layer centered around 30 km. As already observed in the Southern polar regions, the day to day and seasonal NO 2 variations are closely associated with stratospheric temperature. Calculations and comparison with other experimental data show that this behaviour cannot de interpreted with the current photochemistry.