By Paul Homewood

h/t No Tricks Zone

An important new paper from Frank Lansner and Jens Pedersen:

Abstract

Temperature data 1900–2010 from meteorological stations across the world have been analyzed and it has been found that all land areas generally have two different valid temperature trends. Coastal stations and hill stations facing ocean winds are normally more warm-trended than the valley stations that are sheltered from dominant oceans winds.

Thus, we found that in any area with variation in the topography, we can divide the stations into the more warm trended ocean air-affected stations, and the more cold-trended ocean air-sheltered stations. We find that the distinction between ocean air-affected and ocean air-sheltered stations can be used to identify the influence of the oceans on land surface. We can then use this knowledge as a tool to better study climate variability on the land surface without the moderating effects of the ocean.

We find a lack of warming in the ocean air sheltered temperature data – with less impact of ocean temperature trends – after 1950. The lack of warming in the ocean air sheltered temperature trends after 1950 should be considered when evaluating the climatic effects of changes in the Earth’s atmospheric trace amounts of greenhouse gasses as well as variations in solar conditions.

http://journals.sagepub.com/doi/abs/10.1177/0958305X18756670?journalCode=eaea

This is the killer graph:

Figure 19. Ocean air sheltered (OAS) and ocean air affected (OAA) temperatures, all regions.

We can readily see that temperatures at the OAS (ocean sheltered) sites were just as high back in the 1920s to 40s as now.

Frank Lansner explained the significance of his findings in an email to NoTricksZone:

The little ice-age centuries led to a very cold ocean around 1900-1920 and so ocean and ocean-affected stations were not able to show the warming around 1920-30 so well. The ocean kept the warming hidden to some degree. Ocean temperature rise was somewhat delayed for decades it appears. That’s why ocean temperatures do not well reflect the heat balance over the Earth 1920-50 – unlike OAS areas valleys that reflected the change in heat balance rapidly. Thus it appears OAS data are the data best suited for evaluating the heat balance over the Earth.

via NOT A LOT OF PEOPLE KNOW THAT

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March 23, 2018 at 12:33PM