Month: September 2023

1953 Floods And Drought

By Paul Homewood

 

  image

https://www.bbc.co.uk/news/uk-england-lincolnshire-64414388

As you know, I like sometimes to go back in history and recall some of the extreme weather we used to have then. It is always a sobering experience, and puts into perspective the hype we get nowadays about every bit of bad weather.

So that I cannot be accused of cherry picking, I always go back in tens of years, so this post is devoted to 1953.

It should come as no surprise that I start with the Great North Sea Flood, which the BBC recalled earlier this year:

On the night of 31 January 1953, a wall of water surged from the North Sea, over-topping sea defences and leaving a trail of death and destruction in its wake.

A massive storm brought devastation to the east coast of England and claimed more than 300 lives, including 43 in Lincolnshire, 26 of whom were aged over 70.

It is widely regarded as one of the worst peacetime disasters to hit the country in the last century.

Badly hit though England was, the death toll in the Netherlands was far worse, killing more than 1800.

A few months later, the Coronation of Queen Elizabeth took place in the middle of what the late Philip Eden described as the worst June weather of the century, so wet and cold was it.

Towards the end of the month, thunderstorms brought severe flooding. At Eskdalemuir 80mm of rain fell in 30 minutes, still a record for the UK:

image

https://digital.nmla.metoffice.gov.uk/SO_117f3d90-8d43-4b42-945b-700e0cbcfa3d/

In the US, Major floods occurred in four areas during 1953: western Oregon and northwestern California, Louisiana and adjacent States, the Missouri River basin in Montana, and northwestern Iowa:

image

image

image

image

https://www.usgs.gov/publications/summary-floods-united-states-during-1953

Japan also experienced two major flooding events that summer:

image

https://en.wikipedia.org/wiki/1953_Northern_Kyushu_flood

image

https://en.wikipedia.org/wiki/1953_Wakayama_flood

Drought

While some parts of the USA were being inundated, others were in the middle of years long severe droughts, notably Texas and California:

image

https://en.wikipedia.org/wiki/Droughts_in_the_United_States#1950s

Tomorrow we’ll look at hurricanes and tornadoes.

via NOT A LOT OF PEOPLE KNOW THAT

https://ift.tt/rXNIZsM

September 12, 2023 at 05:54AM

Pyrenean caves reveal a warmer past

The world’s high mountain regions are particularly sensitive to climate change. Straddling the border between France and Spain the Pyrenees occupy a crucial position in southern Europe, influenced by both Mediterranean and Atlantic climates. New research published in the journal ‘Climate of the Past,’ investigating climate proxy data based on stalagmites is revealing that past climates were warmer than our own.

This is the first climate reconstruction in the region based on speleothems over the past 2500 years. Previous reconstructions have been based on lake sediments, tree-rings and glaciers.

Global surface temperatures in the first two decades of the 21st century (2001–2020) were 0.84 to 1.10°C warmer than 1850–1900 AD (IPCC, 2021). According to the IPCC anthropogenic global warming is unprecedented in terms of absolute temperatures and spatial consistency over the past 2000 years. However, pre-industrial temperatures were less spatially coherent, and further work is needed to explain regional and natural climate change. Thus, according to the authors of the new study, “obtaining new and high-quality records in terms of resolution, dating and regional representativeness is thus critical for characterising natural climate variability on decadal to centennial scales.”

It is clear that the Pyrenees has followed the global trend. Their temperature has increased by more than 1.5 °C since 1882, as shown by the longest time series recorded at the Pic du Midi observatory. Recent studies confirm this warming trend, showing an increase of 0.1 °C per decade during the last century in the Central Pyrenees, or even 0.28°C per decade if only the 1959-2015 period is considered.

In addition, long-term snow depth observations (starting in 1955) show a statistically significant decline, especially at elevations above 2000 m. The glaciated area has decreased by 21.9% in the last decade from 2060 ha during the Little Ice Age (LIA) to 242 ha in 2016.


Stalagmites and stalactites record long-term climate data.

The new work has been carried out by researchers from seven nations and led by the Department of Geoenvironmental Processes and Global Change, Pyrenean Institute of Ecology in Zaragoza (Spain). It presents a composite record of oxygen isotope variations during last 2500 years based on eight stalagmites from four caves in the central Pyrenees dominated by temperature variations, with precipitation playing a minor role.

Main climate drivers: Solar and volcanoes

The scientists find that the Roman Period (especially 0-200 AD), the Medieval Climate Anomaly (MCA), and part of the Little Ice Age represent the warmest periods, while the coldest decades occurred during the Dark Ages and most of the LIA intervals (520-550 AD and 1800-1850 AD). Importantly, the LIA cooling or the MCA warming were not continuous or uniform and exhibited high decadal variability. The Industrial Era shows an overall warming trend although with marked cycles and partial stabilisation during the last two decades (1990-2010).

The researchers say that the strong coherence between the speleothem data, European temperature reconstructions and global tree-ring data means that the new data tells us about the nature of past climates importantly revealing that it is solar variability and major volcanic eruptions that appear to be the two main drivers of climate change in southwestern Europe during the past 2.5 millennia.

In summary: Over the past 2500 years it was the Roman Period that was the warmest. A cold period started around 300 AD with two particularly cold events in 500-650 and 750-850. The warm and dry Medieval Climatic Anomaly was well observed as well as the Little Ice Age. Cooling was observed during the Maunder Minimum and possibly the Dalton Minimum, both periods of low solar activity. Low temperatures started to increase around 1950 and the temperature increase since then is most notable in the past 2500 years.

Feedback: david.whitehouse@netzerowatch.com

via Net Zero Watch

https://ift.tt/PkLMufp

September 12, 2023 at 05:24AM

Yndestad: A Cold Climate Period is coming

Prof. Harald Yndestad explains the research and calculations behind his ideas, and how he not only came to question IPCC-type predictions of large temperature rises in the next decades, but arrived at his own.
– – –
Climate data series reveals we are moving into a new serious cold climate period.

1. Solar irradiation from the sun has a computed maximum in 2017 and deep minimum in 2050.
2. Solar forced climate variation has a computed 500-year maximum in 2025, and a 1000-year deep minimum in 2070AD.

Read more here.

via Tallbloke’s Talkshop

https://ift.tt/IHMXmBv

September 12, 2023 at 05:19AM

Wind Power Reassessed–Dr Capell Aris

By Paul Homewood

In 2017, Dr Capell Aris wrote this paper.

Although it was based on a larger proportion of onshore wind and wind capacity of 10 GW, its findings are still relevant:

  image

image

image

http://www.iesisenergy.org/agp/Aris-Wind-paper.pdf

via NOT A LOT OF PEOPLE KNOW THAT

https://ift.tt/DJVXfSg

September 12, 2023 at 04:13AM