Interesting read this thread. I don't have a barometer issue as I track within .05 -1mb of the 5 stations around me all are FAA/NWS. Only PWS station in the area. But I seem to get bad reports about humidity and temperature. Here is where the microclime kicks in. I am 50 feet about Salt water and in mountainous terrain. The major channel both for water and wind is se to nw. Gladstone last time I wrote to him about his program says he compares me to the airport which is 5 miles away on a different island. When the wind blows they are always cooler as the wind has come over 100 miles or so of 40 degree water and ice fields. This tend to make PAKT temps a little lower then wher eI am sheltered from the NW winds. Gladstone does not seem to take this into account. I still have a old 20 year old davis monitor and it shows the same temps my OS system gets. So I believe what I see here and not what he says with his program. A morning check of the metars around me 100 mile range shows that I am in the ballpark with everyone around me. Being a mountainous marine enirometer can be a challenge with weather with out a bad anyaltical program thrown in by the bad data it gets. What I did learn it seems that they use the government states around you to aalysis your data. Looking at the charts they have it seems to be a national average more the just your area.
John
