dendrite

I made this yesterday on my work comp, but forgot to post it. You can see how BOS jumps out a consistent 2F higher on the departures in the same time frame where the MADIS chart indicates about a 2F error. Aug '18 to about Feb '20.

33° overcast Hoping for the last flakes of the season today

RIP

Been stuck at 36° for 3 hours.

I always enjoy these step changes. 2F too warm for all of 2019

It's kind of semantics, but it isn't necessarily fair to say a site like BOS is erroneous and reads 2F too high when it could simply be the effects of the heat island compared to the burbs. You don't know if a sensor is truly erroneous unless you're testing it directly with a calibrated comparison or in a chamber.

Not if you read and understand it. The error is comparing the analysis temp to the reported temp. So when the error is positive, the analysis temp is higher than the reported temp…therefore the sensor is reading cooler than expected. It wouldn’t be correct to judge a sensor’s error based on these analyses because it compares the data to stations around it. Microclimates can affect these. A place like BOS, on the coast, will see higher than usual “error” with east flow in the spring and fall because of possible significant differences between the coast and places 10 miles inland. UHIs, elevation differences, geographical differences, siting differences, etc all have an effect. What we look for are significant step changes (jumps) in the error over a short amount of time to indicate something changed with the station’s siting or instrumentation. New stations coming online can affect the analysis generated temps as well, but it doesn’t usually acount for significant shifts in the error.

Negative error means it's running warmer than the analysis temp.

Looks okay for now although it’s a little on the warmer end of the baseline recently so I’d keep an eye on it over the next couple of months.

29.1° will do it. The banana is done for good now.

A little nippy with the breeze. 29.8°

It takes a lot of heat to wipe out the arctic ice that has rapidly deteriorated in the last few decades. We know the CO2 has been steadily, rapidly rising since we started measuring it in HI too. It’s pretty obvious we’re trashing the planet with our excessive waste, pollutants, GHGs, and plastic. It doesn’t need to be a political issue. I don’t even care what the global temps are. Look around. The planet looks like trash compared to 300 years ago. We should just simply be striving to be as “green” as possible.

I’m surprised wxbell doesn’t paint anything 0 to +5 in blues.

What a wretched day. Up to 1.03”

Meanwhile freezing to the Mexican border and upper 10s around Amarillo.

1/4-1/2SM at CAR this morning. Decent snow event up there for them

I moved everything over to banter so debate it there.

Ok back to weather…lol

I’ll still take that over the pesticides, herbicides, and excessive fertilizers used in irrigated lawns though.

We didn’t hit 80 on Wednesday though.

lol…1/4 of Manhattan is man-made. Give that fake land back to the ocean.

Damn I bet I missed the first frozen here while it was saturating aloft. Looks like there were some brighter echoes overhead here a bit ago.

Being saturated on the cold side versus sunny and mixed on the warm side helps too.

Not radar indicated though. Just algorithms with sfc temps and present wx obs.