Friday Funny: Josh on Mann-made warming

In the last couple of weeks, record highs have been set around the U.S., particularly in the Los Angeles area, which I did a lengthy debunking of. Records were also set in Scotland, then denied by an errant Ice Cream truck, and also questioned in Africa. Josh is on the case to illustrate the one common denominator to all these high temperature records we’ve discussed here on WUWT.

For people who don’t believe this, or think we are just “making stuff up”…here’s the official weather station at the airport in Rome, Italy. I wonder if the Pope has seen this?

And here’s an official NOAA weather station on a rooftop in Santa Ana, CA

Just a short note to readers- Josh has done hundreds of climate related cartoons over the years, and never charged me a dime for them. He’s advanced our viewpoints via humor, and for that we owe him a debt of gratitude. I suggest you buy him lunch or a beer, by going here to his tip jar.

PayPal or credit card accepted.

Thanks, Anthony


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Reginald Vernon Reynolds

I watch LA news and weather report each night and with the exception of a few days, which were hot but not unusual for July (records claimed but not fact checked), and most days have actually been cooler than usual. Certainly nothing to get excited about.

Gunga Din

Reminds me of The Storm Channel reporting.
This time of year they love to throw up a map of the US with a dozen or so places where a record high might be broken tomorrow.
The next day, not a peep about how many of those, if any, didn’t have a record high.
But their forecast served its purpose.
They just want to imprint the impression upon the viewers that, somehow, the weather is different now because of …

Tom Halla

Reality outstrips parody?


Done and thank you Josh!

Troposperic temperatures. Nothing to see here where the greenhouse effect is supposed to occur.

comment image?dl=0

The cartoon says “The Best ones don’t exist so we make up the temperatures.”

It’s been a while since that particular sore spot was visited, newer readers here may not realize that some egregiously poorly placed stations have been shut down. However, to keep the record continuous, they have been replaced with temperatures derived with data from other stations.

That and other adjustments are described at and posts linked to from there.

Is Marysville still producing estimated data? It was closed in 2007.

“However, to keep the record continuous, they have been replaced with temperatures derived with data from other stations.”
This refers to the process of USHCN, which was replaced in 2014. The Santa Ana Fire Station Co-op was not in USHCN, and is not in GHCN.

The Ciampino Airport, pictured here, is in the historic GHCN database, but the last data included was in 1970. It is not one of the stations for which Italy submits CLIMAT forms to WMO. Data since 1970 has not been used in GISS or NOAA temperature indices.


Dang Nick, you are not cherry picking, you are nitpicking. If you are going to believe in the orthodoxy, that is your choice. People defending bad data or bad data collection methodology start from a position of weakness in trying to make their point. Long before Anthony did the review of weather sites I knew that the data for many sites was bogus. That he took the time to do the survey is what brought me to this site. In my area two stations were moved. One, close to the airport, was moved from a low lying area farther from the runways to a much higher area closer to the runways. If you didn’t know better or our local environment you would understand that it made a difference. Suddenly winter low temperatures were higher as were summer high temperatures. Yet the data set is treated like it is from exactly the same spot, using the same instruments. No one bother to compare the two prior to the move so there could be in reliable correction.

“Yet the data set is treated like it is from exactly the same spot, using the same instruments.”
Actually, the usual complaint here is that scientists adjust for such changes, if they do use the data. But the key thing here is that people take temperatures for all sorts of purposes. They aren’t generally designed for use in climate science, and some aren’t suitable for that. So the key question is, are those data used in climate science? That is why inclusion in datasets like GHCN, where they would be used, is important.

Reg Nelson

“The Global Historical Climatology Network (GHCN) is an integrated database of climate summaries from land surface stations across the globe that have been subjected to a common suite of quality assurance reviews. The data are obtained from more than 20 sources. Some data are more than 175 years old while others are less than an hour old.”

What quality assurance existed 175 years ago? LOL

colin smith

The term for which you are seeking is “Nickpicking” 🙂

Pat Frank

And they’re all perfectly accurate and have infinite resolution, don’t they Nick.

Brian R

Some the Ciampino Airport has been around since 1916, are you somehow suggesting that the possible corruption of temperature data is not worth documenting since the “last data included was in 1970”?

There is no indication that the current arrangement was there in 1970. Commercial jet engines were fairly new then, and the runway has likely been extended, probably several times.


The second-ever crash of a commercial jet aircraft was BOAC Flight 781 which crashed soon after departing Ciampino Airport on January 10 1954.


Nick, WHAT??? Commercial jet engines were fairly new in 1970???? Relative to what? Boeing 707 flew in 1959. 727 were flying in 1963. Business jets like Lockheed Jet Star flew in 1957 and the famous Learjet in 1963. In 1968 and 1969 alone I had flown probably ten times in 727s. Lockheed Electra, a prop jet was flying by 1957. DeHavilland Comet was flying commercially in 1952. Most of the wide bodied jets, e.g., 747, went into service in 1970 by then jet travel all over the world was well established.

According to , there is (was) a Coop station at Marysville – 045385 XNP MARYSVILLE 39 09 N 121 35 W 57 and a Coop station at Santa Ana – 047888 XNP SANTA ANA FIRE STATION 33 45 N 117 52 W 135.

Those are very different locations, I was referring to Marysville.

According to old USHCN data at , the station there was

    	  	Station Name 	  	Lat 	Lon 	ID 	Pop. 	Years
(*) 	  	Marysville 	  	39.1 N 	121.6 W 	425745000030 	12,000 	1897 - 2007

I don’t know what that ID is.

From – 39.1457700 -121.5858500 5 45385 MARYSVILLE 0.5 NNE CA 39.15 -121.60 74500003 – says USHCN ID 45385 and GHCN ID 74500003.

There’s no entry for Santa Ana, so I’ll accept that it’s a Coop station and not a USHCN/GHCN station. Why did you mention it?

So Marysville does appear to have been a USHCN and GHCN station, though as you and the GISTEMP link above note, it was “retired” in 2007. The news was reported here in

However, my point was that temperature data from Marysville was still being reported in 2014. I’m glad to hear it is not making it into GHCN data, though I haven’t tried to verify that. From that 2014 post:

I suggest that NOAA/NCDC have another one of those meetings like where they decided to keep long dead weather stations reporting as “zombies”, like I showed with Marysville, yesterday, and work on getting their story straight.

My apologies for saying Marysville was in USHCN. Oh wait. I said:

Is Marysville still producing estimated data? It was closed in 2007.

Excuse me while I go see who made the first mention of USHCN here.

I wonder which homogenization routine can fix poor sitings.
In my view there are none.
Prove me wrong – please.

These stations are not in any dataset which is homogenized for climate use.

AGW is over Nick.


Dear Mr. Salvatore ‘cooling is here’ Del Prete,

You continuously over the years bring up your talking point ‘warming is over’. This is stubborn, as there is no detectable change in the trend. People often say that the last El Nino bumped temperatures up, and it is now fading. Fading or not, the temperatures after faded El Nino are still a bit higher than they used to be.

Would you mind prognosticating less and observing more? Just asking.

And folks, I’m not trolling you. It is just that people who claim cooling when there is more or less linear warming over decades over more or less noisy background variation, don’t sound very sensible. It is a fun sport to try to guess future, maybe bet on it, but saying the same opinion over and over again against what we observe in UAH, GISS, RSS, etc. despite, of course, the continuous tuning they get, won’t get my thumb-up.

The AGW is not over, but it seems to be less a problem than J.E. Hansen said 30 years ago. What I suspect at the moment is, that the CO2 factor is much overestimated, and possibly some other gases have been underestimated. My gut feeling only, though.

Yes AGW is over, but it never existed in the first place . You have to look at my web-site and you will see I based the cooling if certain solar conditions were to take place . I thought those solar conditions were going to take place earlier. Finally in late 2017 they started to come in and this is why I have called for year 2018 to be the transitional year for the climate .

What doe EL NINO(natural event ) have to do with AGW?

Solomon Green

AGW is probably not over. But why does that point to the existence of CAGW?

According to the UN the world population has grown from 3.02 billion in 1960 to 7.53 billion in 2017.

Average wealth has also increasedsignificantly. More eneergy is being used gloabally. Irrespective of how this has been generated, temperatures are bound to have risen as a biproduct.

Whether such a rise is signifcant or not compared to increases in temperature from natura causes is a natter for discussion.

Sam C Cogar

Solomon Green – July 14, 2018 4:26 am

According to the UN the world population has grown from 3.02 billion in 1960 to 7.53 billion in 2017.
Average wealth has also increased significantly. More eneergy is being used gloabally. Irrespective of how this has been generated, temperatures are bound to have risen as a biproduct.
Whether such a rise is signifcant or not compared to increases in temperature from natura causes is a natter for discussion.

And anthropogenically emitted CO2 has been increasing exponentially.

I compiled the following statistics via reliable sources, to wit:

Increases in World Population & Atmospheric CO2 by Decade

year — world popul. – % incr. — Dec CO2 ppm – % incr. — avg increase/year
1940 – 2,300,000,000 est. ___ ____ 300 ppm est.
1950 – 2,556,000,053 – 11.1% ____ 310 ppm – 3.3% —— 1.0 ppm/year
1960 – 3,039,451,023 – 18.9% ____ 316 ppm – 1.9% —— 0.6 ppm/year
1970 – 3,706,618,163 – 21.9% ____ 325 ppm – 2.8% —— 0.9 ppm/year
1980 – 4,453,831,714 – 20.1% ____ 338 ppm – 4.0% —– 1.3 ppm/year
1990 – 5,278,639,789 – 18.5% ____ 354 ppm – 4.7% —– 1.6 ppm/year
2000 – 6,082,966,429 – 15.2% ____ 369 ppm – 4.2% —– 1.5 ppm/year
2010 – 6,809,972,000 – 11.9% ____ 389 ppm – 5.4% —– 2.0 ppm/year
2017 – 7,550,262,101 – 9.80 % ____ 407 ppm – 4.4% —– 1.8 ppm/year

Source CO2 ppm:

Based on the above statistics, to wit:

Fact #1 – In 77 years – world population increased 228% – CO2 increased 35.7%

Fact #2 – Atmospheric CO2 has been steadily and consistently increasing at a rate of 1 to 2 ppm per year for the past 77 years, …… whereas human generated CO2 releases have been increasing exponentially every year for the past 77 years.

Fact #3 – Global Temperatures have been steadily and consistently increasing a few hundredths or tenths of a degree for the past 77 years, ……. whereas human created infrastructure, housing, vehicles, etc. (Heat Islands) have been increasing exponentially every year for the past 77 years.

Given the above statistics, it appears to me to be quite obvious that for the past 77 years there is absolutely no direct association or correlation between:

Increases in atmospheric CO2 ppm and world population increases.
Increases in Average Global Temperature and world population increases.
Increases in Average Global Temperature and Heat Islands construction increases.
Increases in Average Global Temperature and atmospheric CO2 ppm increases.

Gunga Din

Were they ever?
How about providing a list of data-sets which are used now? And from when.

PS These numbers all are from NOAA. They are from their lists of records highs/lows for Columbus Ohio but the lists are from different years. (Captured at the time.)
Who knows what the numbers that weren’t records used to be.

Record Lows Comparison						
Newer-'12			Older-'07 (did not include ties)			
7-Jan	-5	1884	Jan-07	-6	1942	New record 1 warmer and 58 years earlier
8-Jan	-9	1968	Jan-08	-12	1942	New record 3 warmer and 37 years later
3-Mar	1	1980	Mar-03	0	1943	New record 1 warmer and 26 years later
13-Mar	5	1960	Mar-13	7	1896	New record 2 cooler and 64 years later
8-May	31	1954	May-08	29	1947	New record 2 warmer and 26 years later
9-May	30	1983	May-09	28	1947	New tied record 2 warmer same year and 19 and 36 years later
	30	1966				
	30	1947				
12-May	35	1976	May-12	34	1941	New record 1 warmer and 45 years later
30-Jun	47	1988	Jun-30	46	1943	New record 1 warmer and 35 years later
12-Jul	51	1973	Jul-12	47	1940	New record 4 warmer and 33 years later
13-Jul	50	1940	Jul-13	44	1940	New record 6 warmer and same year
17-Jul	52	1896	Jul-17	53	1989	New record 1 cooler and 93 years earlier
20-Jul	50	1929	Jul-20	49	1947	New record 1 warmer and 18 years earlier
23-Jul	51	1981	Jul-23	47	1947	New record 4 warmer and 34 years later
24-Jul	53	1985	Jul-24	52	1947	New record 1 warmer and 38 years later
26-Jul	52	1911	Jul-26	50	1946	New record 2 warmer and 35 years later
31-Jul	54	1966	Jul-31	47	1967	New record 7 warmer and 1 years later
19-Aug	49	1977	Aug-19	48	1943	New record 1 warmer and 10, 21 and 34 years later
	49	1964				
	49	1953				
21-Aug	44	1950	Aug-21	43	1940	New record 1 warmer and 10 years later
26-Aug	48	1958	Aug-26	47	1945	New record 1 warmer and 13 years later
27-Aug	46	1968	Aug-27	45	1945	New record 1 warmer and 23 years later
12-Sep	44	1985	Sep-12	42	1940	New record 2 warmer and 15, 27 and 45 years later
	44	1967				
	44	1955				
26-Sep	35	1950	Sep-26	33	1940	New record 2 warmer and 12 earlier and 10 years later
	35	1928				
27-Sep	36	1991	Sep-27	32	1947	New record 4 warmer and 44 years later
29-Sep	32	1961	Sep-29	31	1942	New record 1 warmer and 19 years later
2-Oct	32	1974	Oct-02	31	1946	New record 1 warmer and 38 years earlier and 19 years later
	32	1908				
15-Oct	31	1969	Oct-15	24	1939	New tied record same year but 7 warmer and 22 and 30 years later
	31	1961				
	31	1939				
16-Oct	31	1970	Oct-16	30	1944	New record 1 warmer and 26 years later
24-Nov	8	1950	Nov-24	7	1950	New tied record same year but 1 warmer
29-Nov	3	1887	Nov-29	2	1887	New tied record same year but 1 warmer
4-Dec	8	1976	Dec-04	3	1966	New record 5 warmer and 10 years later
21-Dec	-10	1989	Dec-21	-11	1942	New tied record same year but 1 warmer and 47 years later
	-10	1942				
?			Dec-05	8	1976	December 5 missing from 2012 list
Record Highs comparison						
Newer-April '12			Older-'07 (did not include ties)			
6-Jan	68	1946	Jan-06	69	1946	Same year but "new" record 1*F lower
9-Jan	62	1946	Jan-09	65	1946	Same year but "new" record 3*F lower
31-Jan	66	2002	Jan-31	62	1917	"New" record 4*F higher but not in '07 list
4-Feb	61	1962	Feb-04	66	1946	"New" tied records 5*F lower
4-Feb	61	1991				
23-Mar	81	1907	Mar-23	76	1966	"New" record 5*F higher but not in '07 list
25-Mar	84	1929	Mar-25	85	1945	"New" record 1*F lower
5-Apr	82	1947	Apr-05	83	1947	"New" tied records 1*F lower
5-Apr	82	1988				
6-Apr	83	1929	Apr-06	82	1929	Same year but "new" record 1*F higher
19-Apr	85	1958	Apr-19	86	1941	"New" tied records 1*F lower
19-Apr	85	2002				
16-May	91	1900	May-16	96	1900	Same year but "new" record 5*F lower
30-May	93	1953	May-30	95	1915	"New" record 2*F lower
31-Jul	100	1999	Jul-31	96	1954	"New" record 4*F higher but not in '07 list
11-Aug	96	1926	Aug-11	98	1944	"New" tied records 2*F lower
11-Aug	96	1944				
18-Aug	94	1916	Aug-18	96	1940	"New" tied records 2*F lower
18-Aug	94	1922				
18-Aug	94	1940				
23-Sep	90	1941	Sep-23	91	1945	"New" tied records 1*F lower
23-Sep	90	1945				
23-Sep	90	1961				
9-Oct	88	1939	Oct-09	89	1939	Same year but "new" record 1*F lower
10-Nov	72	1949	Nov-10	71	1998	"New" record 1*F higher but not in '07 list
12-Nov	75	1849	Nov-12	74	1879	"New" record 1*F higher but not in '07 list
12-Dec	65	1949	Dec-12	64	1949	Same year but "new" record 1*F higher
22-Dec	62	1941	Dec-22	63	1941	Same year but "new" record 1*F lower
29-Dec	64	1984	Dec-29	67	1889	"New" record 3*F lower

Which set of NOAA numbers are used today?

“Which set of NOAA numbers are used today?”
The NOAA has lots of numbers on its site. What you need for any of this to make sense includes:
1. Which dataset are you talking about?
2. Which station/s? Are they the same?

Gunga Din*/*/

I could just put in what I copy/pasted at the time, the “raw” data for those years. (plus a few additional years)
These are NOAA numbers. Don’t you trust them?
Ask them to answer your deflections.

PS A year or so ago I made a similar comment with the links and you admitted that the numbers had been changed as I said.

Which set of numbers are the valid records for Columbus Ohio?
What was done to the non-record values?
Here’s what they say now.

These are basic matters of fact that anyone needs to know before making sense of your data.

In fact, from your link, it is a composite set of records for the Columbus area, posted on a site of the Eastern Region Headquarters of the National Weather Service. It isn’t a single location. And it comes with this warning:

“This station’s record may include data from more than one, possibly incompatible, locations. It reflects the longest available record for the Columbus Area.”

It’s quite possible that they changed the set of locations between postings. But this is a long way from climate science.

Gunga Din

The 2002 list has the same warning as the 2007 list yet there were no new records set.
And just how is evaluating/questioning the values going into the data used in climate science a long way from it?
Maybe you mean a long way from “climate seance”? (Ever hear of trea ring readings?)

“And just how is evaluating/questioning the values going into the data used in climate science a long way from it?”
Because you need to show that the data is actually used in climate science.
I can’t imagine that a page of daily records for a city area would have any use in climate science. But if so, then the ERM of the NWS is not the place to look.

Gunga Din

Nick, the numbers are from NOAA via NWS. NOAA numbers are not used in “climate science”?
These changed records are pulled from the rest of the numbers that weren’t record highs or lows. How were the non-record numbers also changed?

I can’t imagine that a page of daily records for a city area would have any use in climate science

So are you saying “climate science” ignores temperature data from cities that NOAA puts out?

The temp numbers have been changed. The changes to the record temps for my little spot on the globe is just the tip of the iceberg.


“But this is a long way from climate science.”

Most things are a long way from “Climate Science” TM

Reg Nelson

Aren’t they included in BEST? BEST was definitely used for Climate use\propaganda.

And in the Climategate emails Phil Jones admitted that much of the Southern Hemisphere temperature data was largely made up. Was this data not used for climate use\propaganda?

“Phil Jones admitted that much of the Southern Hemisphere temperature data was largely made up”
No, he didn’t.

I can’t see any indication that BEST uses Ciampino. They do have Santa Ana data, but it stops in 2013.


Most know best is not really best…

Philip Schaeffer

Well, lets see the figures you think are best. Have at it.

It appears that the references was not to GHCN stations, but “normal” sea surface temperatures before drifting buoys (ARGO, I assume) provided more data for this century.

It appears that data was used in climate comparisons, I’m not aware if it was used from propaganda.

From :

date: Wed Apr 15 14:29:03 2009
from: Phil Jones
subject: Re: Fwd: Re: contribution to
to: Thomas Crowley
        The issue Ray alludes to is that in addition to the issue
      of many more drifters providing measurements over the last
      5-10 years, the measurements are coming in from places where
      we didn't have much ship data in the past. For much of the SH
      between 40 and 60S the normals are mostly made up as there is
      very little ship data there.
        Whatever causes the divergence in your plot it is down to
      the ocean.
        You could try doing an additional plot. Download from
      the CRU web site the series for SH land. It doesn't matter if
      is from CRUTEM3 or CRUTEM3v (the former would be better). If that
      still has the divergence, then it is the oceans causing the
      problem. What you're seeing is too rapid to be real.

The full Email, a dialog with Phil Jones, Raymond Bradley, and Thomas Crowley is worth reading for additional context and information.

“but “normal” sea surface temperatures before drifting buoys (ARGO, I assume) “
Not ARGO. And it is a specific term, “normals”. Not data. The issue is that they have a whole lot of good new temperature data from drifters, but to form anomalies, by the normal convention, they need an average for the base years, probably 1961-90. These are the “normals”. The purpose of forming anomalies is to subtract out the variation due to geographic variation in the mean. It is best to subtract out the exact mean for the prescribed period, if you have it, but if you don’t, then use the best estimate that you can get.

In fact, the method that BEST and I use doesn’t require a prescribed period. You can use the mean of the data that you have, as long as you then correct for the different periods of measurement that different locations have.

In the last couple of weeks overall oceanic sea surface temperatures are down, Antarctica is having wicked cold, as well as South Africa. In the meantime the Arctic N. of 80 degrees latitude has below normal summer temperatures and to top it off year 2018 is running colder then year 2017 with the month of July to make that difference even more apparent.

As I have said for many months this is the transitional year. Say goodbye to the fake AGW.

Low solar moderated by a weakening geo magnetic field should result in overall sea surface temperatures to keep trending down, while the albedo should increase slightly.


“couple of weeks”… Yeah, and it is freaking hot here.

There’s no point in telling where the cold spots happen to be now. I believe the Arctic is not going to loose ice extent / area this year, but keep pretty stable. I’d like to bet on the next year, that would be fun.


That cartoon jet needs “DiCaprio” on it..

Gunga Din

Anthony deserves thanks for this .
If I remember correctly, he believed Hansen way back when. Then a mentor he trusted gave him a tour of a few of the sites providing the data Hansen was using.
Eyes opened. Much, much of the data was bogus before it was ever recorded.
Some think a computer program can “fix” bogus data. Or even supply valid data that a nonexistent station would have provided if it did exist.
Garbage In/Bullshit Out.
(I think I’ll be in moderation for a bit. 8- )

PS Don’t be awed by computers. They are just very fast calculators. They can add and multiply faster than we can but, if the wrong button is pushed or the “formula”, the program that processes the numbers is in error, the result is in error. (HarryReadMe)

PPS Much of the data (see ) used and available today has passed through a computer and the hands of those that programmed it.

Juan Slayton

Anthony deserves thanks for this .

Agree, but I wish he’d reopen the gallery so we could tidy up the few stations we never got to. I need an excuse to visit New England….

Gunga Din

Agree. I just noticed recently that the link isn’t on the sidebar anymore.
(Or maybe I just missed it.)

A possibility is that, with the new system, the address begins “http” and not “https”?

Gunga Din

PS It can still be found. I found them under “About” on the title bar.
Click “About” then “Publications and Projects” on the drop-down menu.


Done, Josh, and thanks! (Had to look up dollars to pounds conversion first.) 😀

John in Oz

To Nick Stokes – read Harry_Read_Me.txt ( then come back with your arguments about how good the records are – ANY records whether used for GHCN /USHCN or not.


I guess they have since learned how to drop data that does not show warming. Every time the temp goes down too much, split the record 🙂 You can automate that process using an algorithm, and it is complex enough that you can fool yourself first.

That link goes to a part 1. It has a link to an index which goes to part 20!

The real index is at

I have the raw file at


Given how important the issue is claimed to be and the vast amount of money the area has attracted , you would think that the creation of a really first class world wide and scientifically value data collection system would have been a priority . Instead of falling back time and again onto the ‘better then nothing ‘ approach which is seen .
If the will was there just how hard would it be , so you have to question why the will is not there ?


Please pardon my psychotic, conspiracy theory: The powers that be KNEW we were in a natural warming cycle. One that was cycling up to its apex. They further KNEW cooling was imminent, in a few decades, if not years. The “Conspiracy:” 1) scream CAGW and imminent doom 2) impliment The Cure ( more big government taxation and control + less energy generation ) 3) take credit when the cooling arrived…


The issues of contamination by poorly sited stations were thoroughly dealt with in the BEST project.

There is a robust warming trend, even with poorly sited stations excluded.


I think Mosh said the more data they got, the more warming they got. Always.

I raised my eyebrow. Doesn’t sound right.

Russell Nelson

Nope. At least one remains.

Gunga Din

BEST’s problem is that they didn’t exclude all of the classes of “poorly sited” stations.

PS But BEST, unintentionally, does show that we don’t really know the past Global Temperature.
(Did they drive their DeLorean back to check all of siting conditions way back when?)

RobertBobbert GDQ

Goodonya Josh. A little bit forwarded and done with pleasure, and with thanks, for your quality work

Philip Schaeffer

Well, I don’t know nearly as much as Nick about this issue, but it seems to me that the issue is pretty straight forward. There a lots of sites. Some are very good. Some not very good. Some not intended to produce data for the study of long term climate.

I find this notion of wanting to wipe from history the records from sites that may not be useful for climate study rather odd. What if you want to look at the weather conditions over time at airports? How are you going to do that if the sites aren’t recorded? What if you want to study the effects of UHI?

That’s a different issue to whether you use such a site for other purposes.


Let me point out that an airport weather station that produces good climate data is a flight safety hazard. It is intended to produce temperature, pressure and wind data for safety-critical performance calculations. These depend on conditions over the runway, not regional climate.


So what does the rear, ie start, of the runway got anything to do with the point of takeoff conditions…esp. With jet exhausts..

People don’t use the high or low temperatures at the end of the runway, nor the anomalous spike from exhaust heating, they use the current temperature of the area, i.e. the temperature that goes into air density and lift calculations.

“Approach End” is the phrase you are looking for.


“So what does the rear, ie start, of the runway got anything to do with the point of takeoff conditions”

Which end is “rear” depends entirely on the wind direction.

Good point. AWOS/ASOS WX Stations at local airports are certified by the FAA to collect “Aviation Weather” for use by the Aviation Community.

They may or may not be useful for Climate Data. That would be a decision for NOAA.


wanting to wipe from history the records from sites that may not be useful for climate study rather odd

Alarmists want to wipe the stations that made records very long time ago. The more they get wiped off, the more warming we’ll get.

Philip Schaeffer

Yeah, but if you’re actually going to decide how things should be done, that isn’t very useful.

Philip Schaeffer

I mean, honestly, it’s more of a political point scoring rally call than an actual useful statement about science.


Odd? Nothing odd about it. This is how doubt-mongering works. Identify an element which seems equivocal then paint the whole thing with the same brush: so ya just can’t trust any of it. The same tactic is employed in the effort to undermine peer-review. The hypocrisy is monstrous – blatent politicization and accusing Climate Science of being politicised.

It would be odd for a doubt-monger not to be muddying the waters like this.


So on the debunking thread I tried to suggest some of those bad stations could still have a record high for that station. But I forgot about the air conditioner. In the 2-D picture it appears it’s right under the Stevenson screen. If it is, that location isn’t giving you anything related to weather, it’s basically just an on/off data logger for the A/C unit!


Science experiment.
1. Place our cell phone and a thermometer on the dash of your car, with the car facing south, on a warm (over 80 D F) day. CAUTION use a throwaway phone.! It is highly likely this will RUIN your phone.
2. Every ten minutes go back to the car and try using the cellphone.
3. At what temperature does the cell phone quit working?

Explanation, While in the Navy I Calibrated sensitive instrumentation to assure it was NBS raceable (now NIST) used to repair and calibrate other electronic equipment. This process required that the calibration lab be maintained within a narrow specified temperature, atmospheric pressure and humidity span. The actual values of each of these parameters was recorded on the calibration report, documenting the state at which they were calibrated. During an air conditioning failure the temperature in the lab was more than ten degrees above specifications. To see if this had any effect I measured the voltage of a “Reference Calibration Standard.” It was off calibration by more than 0.5 %. The same thing is happening to all of the electronic Weather Station equipment. Just because the reading is displayed with 3 or 4 decimal point digits does not mean it is Accurate to three or four decimal points, even one decimal point.


Actually, at airports, measuring the runway temperature (or close to it) is important since it affects aircraft performance — particularly for takeoff. It just shouldn’t be used to measure temps for climate analysis.


Here in Meeamee, Florida , the official 2pm daily high temperature recorded at Miami International Airport , one of the busiest in the world, is always at minimum , ten degrees warmer than the temperature reading , under a shady tree, in my back yard.

Donated for the Hot Air Arrow pointing at MM.


Given that the polar regions are covered by a scant few weather stations, I’ve always been suspect that these stations are near research camps that have a large “heat island” signature.