Variations in the Dobson total ozone data from Reykjavik

Gudmundur Bjarnason; Ornolfur E. Rognvaldsson; Thorsteinn I. Sigfusson

doi:10.1117/12.163495

2 November 1993 Variations in the Dobson total ozone data from Reykjavik

Gudmundur Bjarnason, Ornolfur E. Rognvaldsson, Thorsteinn I. Sigfusson

Proceedings Volume 2047, Atmospheric Ozone; (1993) https://doi.org/10.1117/12.163495
Event: High Latitude Optics, 1993, Tromso, Norway

Abstract

The Dobson station situated at Reykjavik (64 degree(s)08'N, 21 degree(s)54'W), Iceland is one of the few sites where a continuous long term monitoring of total ozone has been performed since the establishment of the Dobson network in 1957. A thorough analysis of the data has been performed with the aid of a statistical model which was developed to reproduce the data and quantify the role of different physical parameters in determining ozone variations. The data set for the entire period has been critically examined for possible inconsistencies. Trend analysis shows a statistically meaningful decline of about 6.5% over the last 14 years during the summer. While no significant wintertime ozone decline is detected since 1977 the annual amount declines at a rate of 0.03 +/- 0.11% per year which is about three times the rate over the earlier twenty years. Signatures of the 11 year solar cycle are exceedingly large during the early months of the year and in the westerly phase of the QBO. Comparison with the TOMS data shows an excellent agreement at times of satellite overpass. Strong responses to major solar proton events and atmospheric nuclear bomb testings appear in the data. On shorter time scales the variations are largely determined by tropospheric synoptic scale disturbances.

Citation Download Citation

Gudmundur Bjarnason, Ornolfur E. Rognvaldsson, and Thorsteinn I. Sigfusson "Variations in the Dobson total ozone data from Reykjavik", Proc. SPIE 2047, Atmospheric Ozone, (2 November 1993); https://doi.org/10.1117/12.163495

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available