Post a Pic of Your Weather Station

Seoul Meteorological Observatory

Had to climb the hill for a while to find the entrance.


This building was originally headquartered of the Korea Meteorological Administration.


The Seoul Meteorological Observatory is an observation site representing the weather in Seoul and has been in existence since 1933. The Korea Meteorological Administration (KMA), which was here from 1953 to 1998, moved to what is now the Sindaebang-dong building, leaving only the weather station. The observatory uses weather observation equipment installed on the roof of the building and observes temperature, humidity, wind, precipitation, solar radiation, sunshine, evaporation, yellow dust, earthquakes, etc. and manually observed by observer for clouds, visibility, and weather phenomena. In addition, we will observe seasonal of the flower blooming period, the autumn foliage period of Bukhansan Mountain, the first snow/frost, and the freezing time of the Han River.


The seismic sensor has been installed since 2016. The Gyeongju Earthquake caused the Korean people to be wary of earthquakes since then.












Magpies are considered as auspicious in Korea.


I like the doorknob that features the lion's face. We were thinking to enter further inside but not sure if it would cause any trouble, so went back down after enjoyed the scenery for about half an hour.

The traffic agency has got two weather stations 20-30km inland of Umeå at around 100m ASL. This is how they're placed:

Brattby:


Långviksvallen:


The Brattby station looks to be about 4m from the actual road asphalt. However, the ground right next to it is gravelly soil without any grass.
The Långviksvallen station looks to be about 6m from any asphalt or non-grassy terrain. However, it's surrounded by dense vegetation within half a meter from the station.

Do you think these stations are placed well enough to be used as some sort of representation for the climate and weather in nearby villages? If I present data from these stations, are you going to "attack" me for using shitty botev stations or are they fine?

These sort of roadside stations are only for use by the Highways Agency in the UK so they know when to send gritters out etc.. They are not WMO standard & are not used by the Met Office who do use data from other entities such as the Environment Agency, who record rainfall at many different locations. I guess they can be useful, but I wouldn't use them over proper official stations.

In what matter would you estimate the jungle station to differ from a properly placed one? Milder or cooler lows, milder or cooler highs?

I've set up a PWS. The radiation cover isn't very good at all. Mostly just takes away the worst of the albedo as well as protecting from rain. For that reason it's necessary that it's placed somewhere that won't get direct sunlight during any part of the day (which during the summer is pretty much any direction lol). The tree trunk serves to block any direct sunlight at noon, and the radiation cover should be good enough to protect from sunlight slipping through the conifer branches during the rest of the day, as well as during overcast conditions such as today.


Its location is in that group of spruces in the middle of the frame, on the backside of a county-owned facility, on the other side of a major road. I.e. not a place anyone is going to randomly walk through very often at all. Also relatively well hidden between the trees.


Its location within the city. Very good representation of what the average person in the university side of the city experiences.



I'm using one of these tempodiscs as a temperature logger. bluemaestro.com/products/tempo-disc-bluetooth-temperature-humidity-sensor-beacon-logger


It's rated at a typical accuracy of 0.3'C, with a maximum of 0.4'C, so that seems good. The main problem is that it's obviously a lot slower at changing temperature than a probe thermometer. This will likely affect highs and lows a little. I have it set on logging every five minutes. When I put it in my backpack and left my apartment to set it up, this is what it recorded:


At 13:43 it was 15.1'C, and at 13:58 it had reached the 13.8'C at which it settled. So 15 minutes for that last 1.3'C to change. The uni station was about 14.2'C during that time, and the temperature can be assumed to have been reasonably steady. These were the university station's hourly mean, max and min readings.
 
The airport station was 13.8'C at 13.00, 13.7'C at 14.00 and 13.9'C at 15.00. Since it's overcast, the temperature should be relatively homogenous within 5km distances, so I'd say the accuracy of the thermometer and radiation cover is sufficient in overcast conditions.

Naturally, a station placed surrounded by trees isn't ideal. The humidity can be higher and therefore temps cooler. It's mostly conifer trees though so hopefully this effect is kept to a minimum. It reduces windspeeds as well, which is a problem since my thermometer is slow to change temperature as it is. Luckily it's not located in an actual forest, just in a minor bundle of trees. I'll be interested in following up on the readings this thermometer record and see how much it differs from other stations nearby in terms of highs and lows during various weather conditions, as well as delays in temperature changes.

Regarding humidity and DP readings I don't really care much about that, and I have little trust in humidity readings of unprofessional equipment that hasn't been calibrated. The Umeå airport station was 13.8'C @ 58% RH at 14.00. My station was 13.8'C @ 52.8% RH at 14.03.  The sensor is rated with a typical accuracy of 3% and a maximum accuracy of 4%, but that's probably after calibration. Was the air actually drier around my pws? Wouldn't really count on it.

Ariete What's your honest opinion? I know you joked around quite a bit while we were discussing this the other day.

Overlapped the airport's hourly readings along with the PWS readings. Too bad there aren't any more frequent readings than hourly for SMHI stations

The Uni station only has minute data using their own graph, so I tried to match my graph to that one as best I could. I'm very pleased with the performance of this PWS setup. It seems to read similar lows and temp patterns as the uni station 700m away, with similar night time lows, but with cooler daytime temps. If anything, daytime temps are cooler than the airport station, which is a good indication that it's just as shielded, if not more, from radiation as an official station. The high for today was 19.7'C at my PWS. Curious to see, in a couple hours, what it was at the airport and how they match up. The Uni station got up to 21.6'C on its roof patio.



(These graphs aren't synced 100% perfectly. I just cropped them in a way that looked about right)

Edit: my high was 19.7'C and the airport high was 19.8'C. I think it's safe to say that the readings of my PWS are accurate, both in sunny and cloudy weather. Highs and lows can be assumed to be slightly compressed when the highs and lows occur as shortlived spikes. Maybe a 0.3'C too low highs and too high lows in general. Something like that.