I wonder how this dedicated weather observer feels about having his readings adjusted by NCDC?

In my travels surveying weather stations around the United States, I met many dedicated observers like this one. It is sad indeed that their painstakingly recorded data by observers like this one gets adjusted by NCDC to give results that aren’t the same as what they observed. I have some comments, data, and photos about the station that follow, but let me say to Mr. Hendrickson first; thank you sincerely for your service and dedication.

Richard G. Hendrickson taking weather observations at his farm in Bridgehampton, New York. Photo: NOAA, 2008.NOAA honors New York farmer for 84 years of service as volunteer weather observer (press release)

When Richard G. Hendrickson (seen at right) logged his first weather observation for the U.S. Weather Bureau, the precursor to NOAA’s National Weather Service, Herbert Hoover occupied the White House. Since then the Bridgehampton, New York, farmer has filed twice daily reports, tallying more than 150,000 individual weather observations – playing a critical role in building our nation’s climate history.

As part of the National Weather Service Cooperative Observer Program, Hendrickson collects data from the weather observing station on his farm and calls in his observations – temperature, precipitation, wind and any other significant weather factors – to the weather service.

On July 27, Hendrickson, age 101, will receive an award for his long standing service – 84 years – to the nation. Since Hendrickson is first in the history of the program to serve for more than eight decades, the new 80-year service award will be named in his honor.

“Volunteer observers are the bedrock of weather data collection,” said I. Ross Dickman, meteorologist-in-charge of the New York weather forecast office. “Richard has contributed thousands of weather measurements to build the climate record for Long Island, and after 84 years, holds the title of the nation’s longest-serving volunteer weather observer. With this award, we honor Richard for his selfless dedication to his community and the country.”

Hendrickson started volunteering as a weather observer when he was 18 years old. His lifelong commitment stems from personal interest in weather and a sense of patriotism. “I enjoy observing the weather, it’s what I do for my country,” he said.

Hendrickson’s enthusiasm for weather extends beyond collecting data. In 1996 he authored, Winds of the Fish’s Tail, which highlights his years of observing the weather on Long Island’s east end. Hendrickson also writes a column on weather that is published in two eastern Long Island newspapers.

The award presentation will take place before an open house at the weather forecast office in Upton, New York. Throughout the day; residents are invited to tour the forecast operations floor, meet meteorologists and learn how forecasters track storms and issue warnings. The open house is an opportunity for the public to learn how to become weather-ready, become a storm spotter and see a weather balloon launch.

AWARD PRESENTATION:

Sunday, July 27, 9:45 a.m. to 10 a.m. EDT

New York Weather Forecast Office

175 Brookhaven Avenue, Upton, NY 11973

NOTE: Media must register with Tim Morrin to attend the ceremony, 631-924-0227

The National Weather Service’s Cooperative Observer Program has given scientists and researchers continuous observational data since the program’s inception more than a century ago. Today, over 8,700 volunteer observers participate in the nationwide program to provide daily reports on temperature, precipitation, and other weather factors such as snow depth, river levels and soil temperature. Long and continuous weather records provide an accurate picture of a locale’s normal weather and give climatologists a basis for predicting future trends. These data are invaluable for scientists studying floods, droughts, and heat and cold waves.

The first extensive network of cooperative stations was set up in the 1890s as a result of a Congressional Act that established the U.S. Weather Bureau. Many historic figures maintained weather records, including Benjamin Franklin, George Washington and Thomas Jefferson. Jefferson maintained an almost unbroken record of weather observations between 1776 and 1816, and Washington took weather observations just a few days before he died.

The National Weather Service New York forecast office located in Upton, New York, is the primary source of weather data, forecasts and warnings for about 18.6 million people in southeast New York, northeast New Jersey and southern Connecticut. Visit us at weather.gov/nyc and join us on Facebook and Twitter. For more on how to become weather-ready, visit Weather-Ready Nation.

NOAA’s mission is to understand and predict changes in the Earth’s environment, from the depths of the ocean to the surface of the sun, and to conserve and manage our coastal and marine resources.

==============================================================

First a look at the station itself from above. The coordinates are the ones given in NCDC’s HOMR metadata.

Bridgehampton_USHCN

The Stevenson Screen (white box between the row of trees and the house) is about 25 feet from the asphalt driveway, would would make it a Class 4 station, unacceptably sited:

Climate Reference Network Rating Guide – adopted from NCDC Climate Reference Network Handbook, 2002, specifications for siting (section 2.2.1) of NOAA’s new Climate Reference Network:

Class 1 (CRN1)- Flat and horizontal ground surrounded by a clear surface with a slope below 1/3 (<19deg). Grass/low vegetation ground cover <10 centimeters high. Sensors located at least 100 meters from artificial heating or reflecting surfaces, such as buildings, concrete surfaces, and parking lots. Far from large bodies of water, except if it is representative of the area, and then located at least 100 meters away. No shading when the sun elevation >3 degrees.

Class 2 (CRN2) – Same as Class 1 with the following differences. Surrounding Vegetation <25 centimeters. No artificial heating sources within 30m. No shading for a sun elevation >5deg.

Class 3 (CRN3) (error >=1C) – Same as Class 2, except no artificial heating sources within 10 meters.

Class 4 (CRN4) (error >= 2C) – Artificial heating sources <10 meters.

Class 5 (CRN5) (error >= 5C) – Temperature sensor located next to/above an artificial heating source, such a building, roof top, parking lot, or concrete surface.”

That’s not the fault of the observer, Mr. Hendrickson is working with what he has. NOAA/NWS actually installed and placed the station, and is responsible for its maintenance. The station is also boxed in by vegetation on three sides, along with the house for the fourth side, making it warmer than it should be due to wind inhibition.

What is even more interesting though is what happened to the data in 2012, according to this plot from NASA GISS of the station, there was quite a spike.

Bridgehampton_station_plot

Yet amazingly, even though Mr. Hendrickson has been dutifully reporting the daily data, and it is up to date, as seen in his May report below…

Bridgehampton_B91_May2014

…NASA GISS run by Gavin Schmidt, can’t seem to find the time to get their data set current for Bridgehampton, as seen here, only going to 2012. You’d think Gavin could tear himself away from Twitter long enough to at least get the data updated, especially since this man is so dedicated to the task.

More on all this in a later post.

UPDATE: 7/24/14 9AM I sent a Tweet yesterday to Gavin asking why Bridgehamptoon has not been updated at GISS since 2012, and as far as I know there has been no response.

Nick Stokes in comments thought that the lack of GISS updating was a GHCN problem, not a GISS problem.

I also asked the BEST team (who also use GHCN) and Zeke Hausfather responded almost immediately:

Looks up to date to me, as a file was just compiled this morning and is available up on the FTP site: ftp://ftp.ncdc.noaa.gov/pub/data/ghcn/v3/ . I believe they have a system that automatically compiles it daily.

Here is a chart of station observations in GHCN by month from today’s file. There are 2297 stations reporting so far for June 2014 (none for July, obviously, since its not over yet). If you check GHCN-daily instead of GHCN-monthly, you will find much more data from last month.

GHCN_station_reporting_count

My thanks to Zeke for that.

Also of interest are these notes in the status file for GHCN:

GHCNM, V3, status file (users can use this file to determine overall current status, including information related to previous changes and errata). ******************************************************************************** 07/14/2014 On or around 06/06/2014, there was an ingest problem with the “C” source data, (unpublished MCDW), and this caused a signficant reduction of data from that source. However, much of the data were still available through an alternate source (UK Met Office, “K” source flag). The ingest problem was resolved on 07/10/2014, and the expected frequency of “C” source data was restored. ******************************************************************************** 10/17/2013 Government operations have been restored, and regular monitoring of GHCN-Monthly will now resume. During the shutdown of government operations, some ingest of recent international data were not received. These data should be restored with the next processing cycle (e.g. 10/18/2013). ******************************************************************************** 10/01/2013 During the shutdown of government operations, GHCN-Monthly will continue to update automatically, but will not be monitored by the GHCN-Monthly team. We will also be unable to answer questions submitted to NCDC.GHCNM@noaa.gov until after government operations resume. ********************************************************************************

GHCN even continued to update during the “government shutdown” last year, and there is no note indicating late data for all of 2013.

So much for the Nick Stokes theory as to why GISS has not updated Bridgehampton. Now it’s back to Gavin and GISS.

I’m time limited for the next two days, so my promised update won’t happen until this weekend. Tony Heller has done some work in the meantime worth looking at here: http://stevengoddard.wordpress.com/2014/07/24/more-from-bridgehampton-ny/

The graph of adjustments show Bridgehampton’s data has been dramatically cooled in the past by as much as 1.5°F:

ScreenHunter_1270 Jul. 23 22.00

I have not double checked the graph above, but the spike at Bridgehampton in 2012 seems spurious, as I originally noted.

More on all this Saturday or Sunday when time permits.

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Alexej Buergin
July 25, 2014 10:51 am

My question would be: Did they ever calibrate the thermometers, especially after some changes?

Phil
July 26, 2014 4:03 pm

From http://www.noaanews.noaa.gov/stories2014/20140721_hendrickson.html:

Since [1930], [Richard G. Hendrickson] has filed twice daily reports.

In trying to verify when the reports were filed, I looked at the original forms B-91 available at http://www.ncdc.noaa.gov/IPS/coop/coop.html. From the forms B-91, I could not verify this statement. However, what I did find is that Mr. Hendrickson is identified as the observer only beginning in January of 1944, which would mean that he has only been an observer for 70 years according to the forms. Before that, Howard P. Corwith is identified as the observer from Sep. 1940 until Dec. 1943. Ernest S. Clowes is identified as the observer from the beginning of the record in Aug. 1930 until Aug. 1940.
The observation times were, as was common then, in the afternoon, but they vary from as early as 4:15 PM to 8:00 PM. There did not seem to be a consistent observation time until Oct. 1956, when the observation time is noted as 8:00 PM until Mar. 2012, when it is noted as 7:00 AM. An MMTS was installed in Jul. 1985 with the Stevenson Screen and the liquid-in-glass thermometer remaining as a backup. There is a note in Jan. 1997 that the “OBSVN” was changed, but not from what to what. In Apr. 2008, there is a note that the “morning observation time” was changed to 8:00 AM “using tel[ephone]”, but not from what time. The note says that the observer would call in his info and that the office “puts data in wxcoder 3.” There is no other evidence of two observations a day, as the observation frequency is consistently reported as “DAILY.” Metadata was obtained at http://www.ncdc.noaa.gov/homr/, but the changes in the identified observer are not noted in the metadata. The only station relocation reported was at the time the MMTS was first installed in 1985: “0.1 mi N.” There does not appear to be a record of twice daily observations other than the cryptic note in 2008. I don’t know how a reasonable adjustment for the TOBS error could be made on this record. Following is comma delimited info that I put together in chronological order.
DATE,OBS, TOBS (Form B-91),NOTE
Aug-1930,Ernest S. Clowes,06:00 PM
Dec-1936,Ernest S. Clowes,4:45 to 4:15 PM
Jan-1939,Ernest S. Clowes,05:00 PM
Jan-1939,Ernest S. Clowes,05:00 PM
Jan-1940,Ernest S. Clowes,05:00 PM
Jun-1940,Ernest S. Clowes,08:00 PM
Aug-1940,Ernest S. Clowes,7:00 to 8:00 PM
Sep-1940,Howard P. Corwith,05:00 PM
Oct-1940,Howard P. Corwith,05:00 PM
Feb-1941,H.P. Corwith,04:30 PM,Change of observer
Mar-1941,H.P. Corwith,05:00 PM
Jun-1941,H.P. Corwith,05:00 PM
Dec-1941,H.P. Corwith,05:00 PM
Jul-1942,H.P. Corwith,05:00 PM
Jul-1943,H.P. Corwith,05:00 PM
Dec-1943,H.P. Corwith,05:00 PM
Jan-1944,Richard G. Hendrickson,05:00 PM,Change of observer
Aug-1944,Richard G. Hendrickson,05:00 PM
Jan-1945,Richard G. Hendrickson,05:00 PM
Oct-1956,Richard G. Hendrickson,08:00 PM
Jan-1964,Richard G. Hendrickson,08:00 PM
Jul-1973,Richard G. Hendrickson,08:00 PM
Nov-1983,Richard G. Hendrickson,08:00 PM
17-Jul-1985,,,”Relocation .1 mi N MMTS INSTALLED, CRS/MXMN REMAIN AS BACK-UP”
24-Jan-1997,,,”UPDATE EQUIPMENT, ADD MMTS, UPDATE GPS LAT/LON, REMOVE ROSA, CHANGE OBSVN AND EQUIP SECTIONS”
Sep-1997,Richard G. Hendrickson,08:00 PM
Oct-2005,Richard G. Hendrickson,08:00 PM
Jun-2006,Richard G. Hendrickson,08:00 PM
14-Apr-2008,,,AT THE EFFECTIVE DATE CHANGED MORNING REPORTING TIME TO 0800 USING TEL. OBSERVER CALLS DATA INTO REP OFFICE. REP OFFICE PUTS DATA INTO WXCODER 3.
Dec-2008,Richard G. Hendrickson,08:00 PM
Sep-2009,Richard G. Hendrickson,08:00 PM
Dec-2011,Richard G. Hendrickson,08:00 PM
Jan-2012,Richard G. Hendrickson,08:00 PM
Feb-2012,Richard G. Hendrickson,08:00 PM,Last paper Form B-91
Mar-2012,Richard G. Hendrickson,07:00 AM,First Digital Weathercoder 3 Form B-91

Phil
July 26, 2014 4:06 pm

The change of observer from Mr. Clowes to Mr. Corwith as incorrectly shown in the data as being in Feb. 1941. It was actually in Sep. 1940.

Evan Jones
Editor
July 26, 2014 6:14 pm

Presumably the trees and the house have been there for a while, so even though the siting is not great, the results should be consistent.
That is not what we find. We find that bad siting — consistent and unchanged over time — greatly increases the trend (sic). Warming or cooling trend is exaggerated, but since we have seen more warming than cooling, the microsite bias is on the side of warming.

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