Category Archives: Air quality

Dust storm in Reykjavik (29 May 2018)

Dry and windy conditions today (after a long period of rain). Figure 1. The weather condition at 13 today for south (west) coast. Windy and dry, wind direction  pointing towards Reykjavik (map from the IMO web site; vedur.is). It is … Continue reading

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Particulate matter during New Year’s Eve 2016/17

The weather was very good during New Years, calm winds, clear skies and cold. Therefore, PM10 concentration was expected to reach high values, and it did. At Grensás, close to downtown Reykjavik, the concentration reached maximum at 01:30, reaching almost … Continue reading

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Dust storm north of Dyngjujökull 20 October 2016

Wind gusts over 20 m/s on 20 October 2016 north of Dyngjujökull gave rise to re-suspension of dust from the glacier river, Jökulsá á Fjöllum. Landsat8 image from 12:34 on 20 October 2016 (image from NASA/USGS). Wind speed measured at … Continue reading

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Dust storm 3 May 2016

Sunny and windy in the south today, and dust blowing in the area near Eldhraun and also Meðallandssandur. Fairly strong winds, 11 m/s average wind speed and gusts of 19 m/s at Kirkjubæjarklaustur (Figure 1). Figure 1. Weather observations at … Continue reading

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Dust storm – lots of clouds–on 28 April 2016

Despite cloud cover, it is possible to detect some dust blowing out to sea from the area east of Mýrdalsjökull. It is likely that this is the Eldhraun area that was flooded in jökulhlaup in Skaftá in October 2015. In … Continue reading

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Dust storms on 18 April 2016

Strong northerly winds made for prime conditions for dust storms on the south coast of Iceland on 18 April 2016. Weather conditions at noon on the 18 April 2016 (courtesy of IMO web page). Below are MODIS images from 12:05 … Continue reading

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Air quality index, loftvís

To estimate air quality, or figure out the current conditions, one needs to know the different units of measure, µg/m3, or mg/m3, and the different health limits for the different pollutants. Also, short term pollution limits are not the same … Continue reading

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