The warming trend (1919-1939)  stopped by naval war in 1940?

Source for lower graphic:IPCC/2001/WG1/Fig. 2.7

Extract from book page 303:

On the assumption that the climate is ocean driven, this study assumes that significant climatic changes during the last century have had their origin in the two World Wars, viz. 1914-18 and 1939-45. During the wars military forces were so intensive and so mighty that they changed regional seas or ocean areas to such an extent that the oceans altered the blueprint, which subsequently changed the climate data series.

(page 304) The ‘accelerated’ warming trend observed since 1918 ended in the middle of December 1939. The war at sea in the North Sea had blocked the Westerlies from passing through Western Europe. The region where the halt came can be located as the coastal corridor from the Helgoland Bight in the North Sea and in the Baltic Sea from Kiel to Koenigsberg (Kaliningrad). Only 100 days earlier Hitler had started the Second World War, and the coastal waters mentioned were particularly affected by naval activities and had succumbed to arctic winter conditions.

Chapter: 6_11

Book Page: 304c

File: 981z_FlashPoints

Image layout: 2010/www.seaclimate.com