Comments on: How not to measure temperature, part 48. NOAA cites errors with Baltimore’s Rooftop USHCN Station

By: Anthropogenic Global Warming Theory Dealt Fatal Blow, Scientific Method Non-Existent « Local News

Sun, 02 Jan 2011 02:28:17 +0000

[...] convincingly that the Baltimore USHCN station’s data should be deemed suspect and discarded here. It also cites a NOAA training manual that states the problems with rooftop weather stations and [...]

By: How not to measure temperature, part 81 - roofing the past in Columbia « Watts Up With That?

Sat, 07 Feb 2009 20:04:20 +0000

[...] covered other rooftop stations in the USWB COOP network, notably the Sacramento, Eureka, and Baltimore stations. There’s also an oddball rooftop station in Oakland at the Museum. the Baltimore [...]

By: How not to measure temperature, part 69 « Watts Up With That?

How not to measure temperature, part 69 « Watts Up With That? — Sun, 24 Aug 2008 04:07:51 +0000

[...] MD as examples. The Reno station had to be moved because it was producing an erroneous record, and the Baltimore station has so much bias (because it existed on a rooftop of a downtown building) that they simply closed it in [...]

By: How Not To Measure Temperature, Part 64 « Watts Up With That?

How Not To Measure Temperature, Part 64 « Watts Up With That? — Tue, 17 Jun 2008 08:24:06 +0000

[...] of West Virginia stations. As NOAA has already established with their training manual for the Baltimore USHCN station, rooftops are a far less than ideal place, and tend to create new temperature records where none [...]

By: Weather Stations Disappearing Worldwide « Watts Up With That?

Weather Stations Disappearing Worldwide « Watts Up With That? — Fri, 07 Mar 2008 03:45:38 +0000

[...] are excluded (but exist online in GISTEMP), but no reason is given. yet other stations like this terrible rooftop station cum heat anomaly (and closed by NWS for that reason) in Baltimore, MD are [...]

By: NOAA Dichotomy in Action « Watts Up With That?

NOAA Dichotomy in Action « Watts Up With That? — Mon, 11 Feb 2008 23:04:47 +0000

[...] NOAA USHCN climate station on the roof of the Baltimore Customs House How not to measure temperature part 49 [...]

By: Evan Jones

Evan Jones — Fri, 25 Jan 2008 22:27:59 +0000

What creates shade often blocks wind.

Besides, if a heat sink is a constant and there is a slight temperature rise over time, the sink will exaggerate it over time. Also sprach LaDochy (2007).

By: Evan Jones

Evan Jones — Fri, 25 Jan 2008 22:23:36 +0000

That’s why we have to go out of our way to be nice here. Well, apart for all the obvious reasons concomitant with being nice.

Never forget, we don’t want to pillory them in order to see other dead-cat them. That’s not why we’re here. And never forget that any one of us could be next in line for the pillory.

We want to win them over, not put them down. A live ally is nearly always worth more than a dead enemy. The Hapsburgs didn’t conquer half of Europe–they married it. We want to disarm them. We want them for us, not against us. At the very least we want to make them think twice. No man can do that if his mind is reeling with resentment.

We want to be right AND nice about it. Being the former, we can afford the latter. Besides, if we are civil and they are not, think about how that looks to the neutral outsider.

By: Bill in Vigo

Bill in Vigo — Fri, 25 Jan 2008 14:01:07 +0000

OT I just read a couple of posts by Gavin Schmidt. I don’t think I will return again. Though they are probably good scientists there I don’t feel welcome there. It is hard to get past the obvious dispargment of anyone that is of another opinion. When reading there my mind pictures their faces by the holes in their noses because they speak as if they are far above anyone else.
I am not a scientist but I do have a voice and at least some small amount of intellegence. ( I can’t spell) One thing that really irks me is the statement repeated over and over that any one that the debate is over. how rude to cut people off to blatantly.

you may snip if you want Anthony. I guess I am just venting.

By: I think the heat sinktimetochooseagain

I think the heat sinktimetochooseagain — Fri, 25 Jan 2008 01:08:09 +0000

Over at Climate Audit, someone pointed out that the shadows of the tall buildings might have had a cooling effect. It seems to me that this would be outweighed by other factors. What do you think? REPLY: I think the heat sink capability of large masses of nearby concrete and asphalt swamp any shadowing effects.

By: George M

George M — Thu, 24 Jan 2008 21:11:44 +0000

Sorry, one front leg of the Stevenson.

By: George M

George M — Thu, 24 Jan 2008 21:09:46 +0000

Someone commented elsewhere that the missing rail at this site might mean it was photographed just before/during dismantling. In that vein, I ask, would a rail at the rear have been way too close to the rain gauge, and never there to begin with?

And, look at the two huge cables or hoses going from the roof penetration column on the left, and up into the Stevenson Screen. Electronic thermometers? Cooling air supply? And how about that gray box suspended against one rear leg? Heat source? Cool source? Nasty site, just nasty.

By: Evan Jones

Evan Jones — Thu, 24 Jan 2008 18:01:05 +0000

This would appear to be a good representation of how a heat sink steadily exaggerates temperature increase over a long period of time.

It looks very much like a 2C increase over the last century. Not in line with the Eastern Coast US delta.

Waste heat creates a flat offset. But heat sink is the gift that keeps on giving.

By: George M

George M — Thu, 24 Jan 2008 16:35:03 +0000

The 33 ft (10 meter) elevation for wind instruments is mentioned here. That seems to have been forgotten at ASOS sites. I wonder how many other changes in basic site design have yet to be revealed? By now, the accuracy of all the historical US weather data could be easily challenged. As well as current data. Where, then, does this leave the climate models which were developed and tested against this corrupt set of information?
On a parallel subject, we have our winter warm moist air overrunning cold surface air condition here this week, which the weather models still do not handle very well. The forecasters following their computer predictions have been way off, the few old timers still doing “seat-of-the-pants” forecasting have been a lot closer in their predictions of temperature and precipitation. Neither do very well more than a day ahead, however.

By: Jeff in Seattle

Jeff in Seattle — Thu, 24 Jan 2008 15:06:20 +0000

Might be worth noting that the other stations in the table, BWI, DCA, and IAD are all airports (BWI=Baltimore/Washington International, DCA=Reagan, IAD=Dulles in Virgina, which is about an hour away from BWI via the beltway)