Wednesday, October 30, 2019
We had a very clear day on Saturday. I think that explains why the sunlight was so intense in the afternoon - there was no haze or clouds to scatter the sunlight. However, I don't know why the afternoon shows so much fluctuation in sky brightness intensity.
Monday, October 28, 2019
We had strong winds on Saturday morning. So the sun shield was blown over and exposed the datalogger for a while. We experienced an odd pulse in relative humidity shortly after midnight.
Monday, October 21, 2019
Winds at about 1:00 PM blew over the photometer. So there's a drop in sky brightness starting at about that time. I was able to flip it back over at 4:00 PM.
Wind speeds picked up during the day and blew over the datalogger and its sun shield (starting at around 7:00 AM). So there's an unusual spike in the temperature until I got home to flip it back over.
Friday, October 18, 2019
By and large, the air quality remained good all week. NearSys Station experienced one momentary excursion into the yellow category (between 50 and 100 micrograms per cubic meter) and two into the red category (above 100).
Sunday, October 13, 2019
Air quality was in the green category for this week except for five excursions into the yellow. One of those excursions took the air quality into the red category.
A clear day again. Not much in the way of clouds, but the blue and violet-UV bands are responding with curious blips.
It warmed up more slowly than it cooled down. Otherwise, we got down to freezing again and the relative humidity reached 100%. This combination indicates frost.
Tuesday, October 8, 2019
Good air quality for the last few days of September. No particulates reached a concentration above 18 micrograms per cubic meter.