New paper in process, see details
NOTE: Surfacestations.org gallery server
has received heavy traffic and some attacks in the last 24hrs.
The online image database aka gallery server site has been put
into safe mode to secure backups and make it more secure.
After months of work,
our paper has been accepted, read summaries on the
paper at these locations:
Dr. Roger Pielke Senior's website
Dr. John Neilsen-Gammon's website
Anthony Watts website
Media Resource - download PDF
Link to the paper (final print quality), Fall et al 2011
Fall et all 2011 supplementary information
reaches 82.5% of the network surveyed.
1007 of 1221 stations have been examined in
the USHCN network. The Google Earth map below shows current
Reference for site ratings: NOAA's
Climate Reference Network Site Handbook Section 2.2.1
Sincere thanks to Gary Boden and Barry Wise for this contribution!
term census report of the Surface Stations Project: Is
the U.S. Surface Temperature Record Reliable? - click cover
image at left to download a PDF document. Now at 80%, and
with a majority sample that is spatially well distributed, a
full analysis will be coming in the next few months. We will
however continue to survey stations in the hope of locating
more CRN1 and CRN2 stations due to their rarity.
The upcoming papers will feature statistical
analysis of the nationwide USHCN network in the context of
Direct link to PDF of the report is
HELP NEEDED FOR SURVEYS IN
THE FOLLOWING STATES:
Arkansas, Illinois, Missouri, North Dakota, Idaho, South
Excerpt graphics from the report are
Station quality ratings
obtained from NOAA/NCDC via this source:
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
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
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
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."
Involved! help us document weather stations in
the USA and the world.
irregular observing Sites looking at some of these observing
sites you have to wonder: "what were they thinking"?
links to useful and pertinent documents, images,
drawings, specifications, and web sites.
Visit the blog to see highlighted examples of poorly
sited stations in the "How
Not to measure Temperature" series.
Site launched on 06/04/07
Progress as of
USHCN Sites surveyed so far:
USHCN Sites rated so far:
USHCN Sites remaining:
"This is a very important need for the climate science
community, and you are encouraged to obtain this photographic
documentation if you can, and also share with the new website
under development by Anthony Watts"
Roger Pielke Sr., University of Colorado, June 1st, 2007
Nevada USHCN surveys
surveys completed! See
all California stations here
Louisiana has only
three stations left, Franklin, Lafayette, and Plain Dealing
A look at how changes in
paint on Stevenson Screens
may have affected temperature measurement.
presentation given at CIRES/UCAR
on 8/29/07 describing this
project and the methods used to assign station site quality
ratings, along with examples of many site issues seen thus
Click to view slideshow
Special recognition to
five volunteers; Bob Thompson, Eric Gamberg, Russ Steele,
David Smith, and Don Kostuch, who turned summer travels into
survey expeditions. Don Kostuch has surveyed more stations,
and covered a broader geographic area than any other surveyor.
Thanks to all!