Lots of PM10 at Hvolsvöllur and Heimaland broken on 2010-07-02

High levels of PM10 around noon at Hvolsvöllur on 2 July 2010, highest level about 1774 micro-g/m3, but more stable at Vík (between 40 and 115 micro-g/m3).

Actually it never goes below 40 micro-g/m3 at Vík, which raises some concern.

The instrument at Heimaland seems to have given up completely, either due to the load on 1 July, or perhaps even those measurements were in error ?

2010-07-01 Öskubylur undir Eyjafjöllum

This was in the news about resuspended ash near Heimaland on 1 July 2010 - see previous blog (http://turdusjardvisindi.blogspot.com/2010/07/very-high-levels-of-pm10-and-25-at.html)

Öskubylur undir Eyjafjöllum: "
Öskubylur er nú undir Eyjafjöllum svo vart sést á milli bæja. Ólafur Eggertsson, bóndi á Þorvaldseyri, segir að vindur hafi farið í 42 metra á sekúndu í hviðum við Steina."

Very high levels of PM10 (and 2.5) at Heimaland, Hvolsvöllur high, Vik better on 2010-07-01

Very high levels of PM10 at Heimaland (631 micro-g/m3), high at Hvolsvöllur (224 micro-g/m3), but quite good at Vík (58 micro-g/m3) the 24-hour averages. Health limit as before 50 micro-g/m3.

Measured PM over the day on 1 July 2010. Quite windy from about 6 in the morning, and not wet enough at Heimaland.

For Heimaland I show both the PM10 values (red solid line), and the PM2.5 values (red dashed line). It is confusing that PM2.5 values are higher than PM10, since PM2.5 are included in the PM10 category. So, either some error in PM2.5 measurements, or PM10 is underestimated (quite badly).

Lots of Particulate Matter in the east on 2010-06-30

Considerable PM10 was in the east (the ash fallout zone) yesterday, 30 June 2010. At Hvolsvöllur the 24-hour mean was ~340 micro-g/m3, at Vik it was 169 and Heimaland 152 (always micro-g/m3).

Some of this seems to have blown in over the Reykajvik area. Stations around the greater Reykajvik area measured increased levels of PM10 from about 16:00.

Even better air quality in the ash zone, except at Vik on 2010-06-29

Very low levels of PM₁₀ at Heimaland and Hvolsvöllur on 29 June 2010. Still a little high at Vik (70 micro-g/m³; health limit 50 micro-g/m³).