Previous UV Bulletin

UV bulletins are short reports on current UV levels at NSF network locations. They are posted bi-weekly between September and December when the "ozone hole" is affecting UV levels at our Austral sites.

Bulletin 1/2008, issued 9/11/08
Reporting period: 8/15/08 - 9/11/08

Synopsis:
UV levels at Antarctic sites and Ushuaia were small during the reporting period as the Sun's elevation is still low. The UV Index did not exceed 1.6 at Antarctic sites and 2.5 at Ushuaia.

McMurdo Station, Antarctica:
McMurdo Station was affected by the ozone hole during the last three weeks. UV levels remained very low, however, since solar elevations were still below 8°. The maximum UV Index observed during the last three weeks was 0.3.

Palmer Station, Antarctica:
Total ozone at Palmer Station was below 220 DU on 21-August, between 29-August and 1-September, and between 9 and 11 September, according to GUV-511 measurements. UV levels remained small because the Sun did not rise by more than 21° above the horizon. The maximum UV Index, observed on 9-September, was 1.6. Typical summer-time indices range between 8 and 10 with maximum indices exceeding 13.

South Pole, Antarctica:
UV levels were still negligible since the Sun has not risen yet.

Ushuaia, Argentina:
The edge of the ozone hole has not passed over Ushuaia yet. The smallest ozone column was 250 DU, observed by the GUV-511 radiometer on 3-September. The maximum solar elevation was 30°. The UV Index remained below 2.5.

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