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AGW: Trends in Daily Station Data

Posted on: April 5, 2018

 

 

FIGURE 1: TRENDS IN DAILY TMAX AND TMIN AT 34 USHCN STATIONSUSHCNGIF

 

FIGURE 2: SUMMARY OF DATA IN FIGURE 1XX

 

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  1. The map above shows the location of the USHCN stations used in yellow. Figure 1, displays trend information for daily minimum temperatures (TMIN) and daily maximum temperatures (TMAX) in a GIF animation that cycles through the 34 stations in 17 states alphabetically from Alabama to Washington. In these plots, the twelve calendar months are labeled from 1 to 12 on the x-axis. The ordinate shows trends for these calendar months in daily TMAX (red), daily TMIN (blue), and the diurnal range (grey).
  2. The data for all 34 stations are summarized in Figure 2. In the left frame of Figure 2, the 34 stations are identified along the x-axis by the numerals 1-34 and the ordinate shows the average trends for the station in TMAX (red), TMIN (blue), and diurnal range (grey). The right frame shows the average of these values for all stations in each calendar month.
  3. What we find in these charts is that trend analysis for each calendar month of more than 100 years of daily maximum (TMAX) and daily minimum (TMIN) temperatures show an overall warming trend in the data that is driven primarily by warming in the nighttime minimum TMIN and not by the daytime maximum TMAX; and mostly by warming in the colder winter months and not by warming in the hotter summer months. This pattern is seen in both hemispheres.
  4. These results imply that the global warming trend is one of diminishing coldness rather than increasing warmness. This pattern is inconsistent with the proposal that the observed warming trend is driven by the greenhouse heat trapping effect of the rising carbon dioxide concentration of the atmosphere. The trend patterns are also inconsistent with Event Attribution procedures using climate models that attribute all heat waves to fossil fuel emissions with the further claim that emission reduction is necessary prevent the occurrence of heat waves. 

 

 

 

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3 Responses to "AGW: Trends in Daily Station Data"

[…] Details of the data analysis for these patterns may be found in related posts on this site [LINK] [LINK]  […]

Have you done this analysis on a global scale? My friend poo pooed it because it only reflects the US…

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