Author Archives: climanrecon

UPDATE: AUGUST 2022 The UK Met Office now provides much of its historical weather data in a freely accessible database called MIDAS-OPEN. You have to register to gain access, but this can be done by anyone. The MIDAS-OPEN data reveals … Continue reading →

Figure above: The Central England Temperature area (with apologies to the Welsh) This post covers accuracy issues related to the Central England Temperature (CET) series, created initially by Gordon Manley in 1953, and maintained in recent decades by the UK … Continue reading →

SCOPE This post is about the current spatial sampling of the stations with monthly average rainfall data in GHCNM version 2, and temperature data in GHCNM versions 3 and 4, the current source data for many “official” reconstructions of the … Continue reading →

Author: Dr Michael Chase You are invited to visit a new website that describes a relatively simple, but nevertheless effective method of reconstructing the regional average history of monthly average surface air temperature variations for a region from its weather … Continue reading →

Author: Dr. Michael Chase Photo above: A recent picture of the weather station at Rutherglen, Australia, from the BoM webpage cited below. Other photos are shown at the end of the post. Post Summary and Conclusions This post documents some … Continue reading →

Author: Dr. Michael Chase Introduction Monthly average surface air temperature data in South-East Australia (and probably in other regions) show a relatively sudden increase in maximum temperatures at the end of the 20th century. Unfortunately, this was also the time … Continue reading →

Author: Dr. Michael Chase Introduction This is the first in a series of posts with the general theme of “Do it yourself temperature homogenisation“. The full series of posts will outline a simple but effective procedure for turning raw instrumental … Continue reading →

Author: Dr. Michael Chase, 3rd July 2017 This post documents a review of a recent paper published in Environmental Research Letters about GB wind power and electricity demand: The relationship between wind power, electricity demand and winter weather patterns in … Continue reading →

Author: Dr. Michael Chase “When breakpoints are removed, the entire record prior to the breakpoint is adjusted up or down…” Source: http://berkeleyearth.org/understanding-adjustments-temperature-data/ Many people suspect that there are inaccuracies in the major homogenisations of instrumental temperature records. This article asserts … Continue reading →

Author: Dr. Michael Chase Photo above: Kerang, Victoria, circa 1930 ACORN-SAT is the outcome of a “system” for detection and correction of non-climatic influences on surface air temperature data recorded in Australia. Previous posts have dealt with errors in the … Continue reading →