Death Valley World Record 134 deg. F is Biased ~10 deg. Too High

Roy W. Spencer, Ph. D.

[This blog by Dr. Roy W. Spencer was originally published on his blog site on 8 November 2024.  It is reproduced here under the fair use doctrine and with standing permission from the author. Ed]

Key Points:

      • Over the years, a few commentators have have argued that the world record highest temperature of 134 deg. F at Death Valley, CA recorded on July 10, 1913 is physically implausible.
      • Here I show quantitatively that the 134 deg F temperature is biased high, by about 10 deg. F.
      • Extensive historical research by William T . Reid has suggested the person making the temperature observations at Greenland Ranch likely replaced the official measurements from a thermometer in a Stevenson screen shelter with other measurements made next to the adobe living quarters.

Update #1 (11/8/2024): Fixed a few typos.

Update #2 (11/8/2024): For those messaging me about Furnace Creek temperatures reaching 130 deg. F in recent years, see Bill Reid’s summary of side-by-side measurements made there [and reported at an AMS meeting] showing the non-aspirated “official” equipment produces temperatures 2-3 deg. too high during light wind conditions.

Update #3 (11/9/2024): Bill Reid corrected my use of the term “mountain” stations to describe those not in Death Valley. Many of those stations are at desert plateau sites, so I have changed the term to “higher elevation” stations. I have also asked Bill to provide additional thoughts on this issue, which will be the next blog post here.

BACKGROUND

The “official” world record highest near-surface air temperature is 134 deg. F, recorded in Death Valley, California on July, 10, 1913 at Greenland Ranch, California an isolated location with no similarly sited stations with which to compare (say, within 10 miles and below sea level). Greenland Ranch was a man-made oasis created by the Borax people around the turn of the 20th Century, with water piped in from a nearby mountain. It has a rich history, but always against a backdrop of oppressive summer heat that few visitors (and even workers) could endure.

Continue reading “Death Valley World Record 134 deg. F is Biased ~10 deg. Too High”

2024’s Hurricanes Helene & Milton

 and claims their power was juiced by “Human-Caused Climate Change”  

Robert W. Endlich

Author’s note: This post is based upon the presentation graphics, on-line here, for the 19 October 2024 meeting.

PRELUDE: THE 2024 HURRICANE SEASON BEFORE HELENE

The 2024 Atlantic Hurricane season got off to a late start; Tropical Storm Alberto did not form until 19 June, the latest named storm since 2014. Then, Hurricane Beryl was a long-lasting (around 14 days) system; she began in the Cape Verde Islands region, tracked past Jamaica, crossed Yucatan, entered Texas near Matagorda and weakened, with her remnants getting to the eastern Great Lakes region, before dissipating, 11 Jul 2024.

From Wikipedia,

“Activity then quieted down across the basin for most of July after Beryl dissipated, with no new tropical cyclones forming due to the presence of the Saharan air layer (SAL) across much of the Atlantic.” Continue reading “2024’s Hurricanes Helene & Milton”