Tuesday, August 6, 2019

Weather Prediction - wartime

The North Atlantic weather war occurred during WW2. The Allies (Britain in particular) and Germany tried to gain a monopoly on weather data in the North Atlantic and Arctic Oceans. Meteorological intelligence was important as it affected military planning and the routing of ships and convoys. In some circumstances, visibility was necessary (photographic reconnaissance and bombing raids) and in others concealment (keeping ship movements secret or suppressing enemy air activity). D-day planning was greatly affected by weather forecasting; it was delayed by one day in the expectation that a storm would blow out and sea conditions would be acceptable. British sources of data included ships at sea and the weather stations at Valentia Observatory and Blacksod Point, in neutral Ireland; German use of weather ships also exposed their secret Enigma codes.
https://en.wikipedia.org/wiki/North_Atlantic_weather_war .

Weather Station Kurt (Wetter-Funkgerät Land-26) was an automatic weather station, erected by a German U-boat crew in northern Labrador, Dominion of Newfoundland in October 1943. Installing the equipment for the station was the only known armed German military operation on land in North America during the Second World War. After the war it was forgotten until its rediscovery in 1977.

Weather systems in temperate climates predominantly move from west to east. This gave the Allies an important advantage. The Allied network of weather stations in North America, Greenland, and Iceland allowed the Allies to make more accurate weather forecasts than the Germans. German meteorologists had weather reports sent by U-boats and weather ships, such as Lauenburg, operating in the North Atlantic. They also had reports from clandestine weather stations in remote parts of the Arctic and readings collected over the Atlantic by specially equipped weather aircraft. However, the ships and clandestine stations were easily captured by the Allies during the early part of the war. Data from aircraft was incomplete as they were limited in range and susceptible to Allied attack. Regular weather reporting by U-boats put them at risk as it broke radio silence, allowing the Allies to locate them and track their movements by radio triangulation.

To gather more weather information, the Germans developed the Wetter-Funkgerät Land (WFL) automatic weather station. It was designed by Dr. Ernst Ploetze and Edwin Stoebe. Twenty-six were manufactured by Siemens. The WFL had an array of measuring instruments, a telemetry system and a 150 watt, Lorenz 150 FK-type transmitter. It consisted of ten cylindrical canisters, each 1 metre (3.3 ft) by c.47 cm diameter (1.5 metres (4.9 ft) circumference) and weighing around 100 kilograms (220 lb). One canister contained the instruments and was attached to a 10-metre (33 ft) antenna mast. A second, shorter mast carried an anemometer and wind vane. The other canisters contained the nickel-cadmium batteries that powered the system. The WFL would send weather readings every three hours during a two-minute transmission on 3940 kHz. The system could work for up to six months, depending on the number of battery canisters.

Fourteen stations were deployed in Arctic and sub-Arctic regions (Greenland, Bear Island, Spitsbergen, and Franz Josef Land) and five were placed around the Barents Sea. Two were intended for North America. One was deployed in 1943 by the German submarine U-537, but the submarine carrying the other, U-867, was sunk in September 1944 northwest of Bergen, Norway, by a British air attack.[1]

On September 18, 1943, U-537, commanded by Kapitänleutnant Peter Schrewe, departed from Kiel, Germany on her first combat patrol. She carried WFL-26, codenamed "Kurt", a meteorologist, Dr. Kurt Sommermeyer, and his assistant, Walter Hildebrant. En route, the U-boat was caught in a storm and a large breaker produced significant damage, including leaks in the hull and the loss of the submarine's quadruple anti-aircraft cannon, leaving it both unable to dive and defenceless against Allied aircraft.

On October 22, U-537 arrived at Martin Bay in Northern Labrador, at a position 60°5′0.2″N 64°22′50.8″WCoordinates: 60°5′0.2″N 64°22′50.8″W.[3] This is close to Cape Chidley at the north-eastern tip of the Labrador Peninsula. Schrewe selected a site this far north as he believed this would minimize the risk of the station being discovered by Inuit people. Within an hour of dropping anchor, a scouting party had located a suitable site, and soon after Dr. Sommermeyer, his assistant, and ten sailors disembarked to install the station. Armed lookouts were posted on nearby high ground, and other crew members set to repair the submarine's storm damage.

For concealment, the station was camouflaged. Empty American cigarette packets were left around the site to deceive any Allied personnel that chanced upon it, and the equipment was marked as the property of the non-existent "Canadian Meteor Service" (at the time, the area was part of the Dominion of Newfoundland and not part of Canada until 1949). The crew worked through the night to install Kurt and repair their U-boat. They finished just 28 hours after dropping anchor and, after confirming the station was working, U-537 departed. The weather station functioned for only a month before it permanently failed under mysterious circumstances, possibly because its radio transmissions were jammed. The U-boat undertook a combat patrol in the area of the Grand Banks of Newfoundland, during which she survived three attacks by Canadian aircraft, but sank no ships. The submarine reached port at Lorient, France on December 8, after seventy days at sea. She was sunk with all hands eleven months later on November 11, 1944 by the submarine USS Flounder near the Dutch East Indies.

https://en.wikipedia.org/wiki/Weather_Station_Kurt .
https://www.warhistoryonline.com/world-war-ii/weather-station-kurt.html .
https://ww2db.com/battle_spec.php?battle_id=328 .

Greenland ..

Wednesday, July 31, 2019

●● Law, Government, Politics

● Government Ministries ..
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● Acts, Charters, Treaties - post WW1 ..
Against Appeasing Sociopathy 
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"Liberal" History .. 1909-4-29 People's Budget ..Political Squabbles - UK, 21st ..
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US Political Labels ..73-1-22 Roe v Wade ..

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Tuesday, July 30, 2019

● Government Ministries

Old War Office Building


War Office ..
https://en.wikipedia.org/wiki/Chamberlain_war_ministry .
https://en.wikipedia.org/wiki/Churchill_war_ministry .
https://en.wikipedia.org/wiki/War_cabinet .
https://en.wikipedia.org/wiki/War_Office .

https://en.wikipedia.org/wiki/Ministry_of_Information_(United_Kingdom) .

Predecessors of the modern Ministry of Defence:
Admiralty.
Air Ministry.
Ministry of Aviation.
Ministry of Defence.
War Office.

During the 1920s and 1930s, British civil servants and politicians, looking back at the performance of the state during the First World War, concluded that there was a need for greater co-ordination between the three services that made up the armed forces of the United Kingdom—the Royal Navy, the British Army and the Royal Air Force. The formation of a united ministry of defence was rejected by David Lloyd George's coalition government in 1921; but the Chiefs of Staff Committee was formed in 1923, for the purposes of inter-service co-ordination. As rearmament became a concern during the 1930s, Stanley Baldwin created the position of Minister for Co-ordination of Defence. Lord Chatfield held the post until the fall of Neville Chamberlain's government in 1940; his success was limited by his lack of control over the existing Service departments and his limited political influence.

Prior to the Second World War defence policy was co-ordinated by the Committee of Imperial Defence (CID). In 1936 the post of Minister for Co-ordination of Defence was established, though he did not have a department and the political heads of the three services—the First Lord of the Admiralty for the Royal Navy, the Secretary of State for War for the Army and the Secretary of State for Air for the Royal Air Force—continued to attend Cabinet.

On the outbreak of war in 1939 the CID was suspended and on 3 April 1940 the office of Minister for Co-ordination of Defence was abolishedWinston Churchill, on forming his government in May 1940, created the office of Minister of Defence to exercise ministerial control over the Chiefs of Staff Committee and to co-ordinate defence matters. The heads of the three services were not included in the War Cabinet. The Minister had few departments, the most famous of which was MD1 which allowed unusual ideas for weapons to be developed under the patronage of Churchill with less interference from the services and got the nickname "Churchill's Toyshop".

Sunday, July 28, 2019

● Acts, Charters, Treaties - post WW1

Armistice

Britain
Defence Regulations ..
NSA - National Service Act ..

Appeasement

Appeasement 1938 - Lacking Context? > .

sī vīs pācem, parā bellum

igitur quī dēsīderat pācem praeparet bellum    therefore, he who desires peace, let him prepare for war sī vīs pācem, parā bellum if you wan...