1816: the year without a summer in London

Posted: May 16, 2017 by tallbloke in solar system dynamics

Interesting and detailed post

Wanstead Meteo

Tornadoes, earthquakes, heavy rainfall, abnormally low temperatures, pea-souper fogs and exploding meteors are phenomena that marked the Year Without a Summer around the world 200 years ago. But how did London fair?

1816 & 2015 monthly anomalies The monthly anomalies of the two years closely follow the same pattern between March and August

When extreme weather affects Britain, such as the floods plaguing northern England and Scotland, conditions in the capital are benign by comparison.

There is not a great deal written in the press about the weather in London in 1816. So, as ever, Luke Howard’s The Climate of London, is a primary reference point.

After a wild end to 1815 that was marked with snow and lightning 1816 started dry, cold and frosty. Though cold by today’s standards January 1816 was fairly average and much warmer than the previous two when the last Thames frost fair was held.

annual The highs and lows…

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  1. oldbrew says:

    Wikipedia explains:

    1815 eruption of Mount Tambora

    Impact – Reduced global temperatures, leading the following year, 1816, to be called the Year Without a Summer.
    . . .
    The 1815 eruption of Mount Tambora was one of the most powerful eruptions in recorded history and is the most recent known Volcanic Explosivity Index-7 event. The eruption of the volcano, on the island of Sumbawa in the Dutch East Indies (present-day Indonesia), reached a climax on 10 April 1815[1] and was followed by between six months and three years of increased steaming and small phreatic eruptions.

    The ash from the eruption column dispersed around the world and lowered global temperatures, leading to worldwide harvest failures in an event sometimes known as the Year Without a Summer in 1816.[2] The eruption resulted in a brief period of significant climate change that led to various cases of extreme weather. Several climate forcings coincided and interacted in a systematic manner that has not been observed since, despite other large eruptions that have occurred since the early Stone Age. Although the link between the post-eruption climate changes and the Tambora event has been established by various scientists, the understanding of the processes involved is incomplete.


    Blast from the Past

    The eruption of Mount Tambora killed thousands, plunged much of the world into a frightful chill and offers lessons for today

    Read more: http://www.smithsonianmag.com/history/blast-from-the-past-65102374/

  2. Sparks says:

    Sounds like it was cold back then, volcanoes an all lol The truth is, around this time the sun was recorded as having some unusual sunspot activity. During the over all peak of solar cycles over the past 200 years, I can reasonably explain why sunspots dip off. During the 1970’s the same thing happened around the 1810’s.