Indian ocean
Natural climate variation is there to be observed (see title of paper), if anyone wants to. No dependency on CO2 levels required, despite the vague assertions made here.
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While the threat of tropical cyclones increases around the world – [Talkshop comment – which study said that?], a new study published in Nature Communications shows one area experienced a significant decline in cyclone activity, says Phys.org.
The paper, “Pacific Decadal Oscillation Causes Fewer Near-Equatorial Cyclones in the North Indian Ocean,” is co-authored by Pallav Ray, associate professor in meteorology at Florida Tech, along with researchers from [various universities] and the Ministry of Earth Sciences (India).
But, with recent changes in climatic patterns in the Pacific, the number of cyclones is expected to increase in the coming decades.
. . .
The findings showed a 43% decline in the number of low latitude (originating between 5–11 degrees) cyclone formations from 1981–2010 in the north Indian Ocean compared to the number of formations between 1951–1980.
The decline is primarily due to the weakened low-level vorticity modulated by the Pacific Decadal Oscillation (PDO) and the increased vertical wind shear. The PDO is a long-term fluctuation in sea surface temperature of the north Pacific Ocean.
The PDO waxes and wanes approximately every 20 to 30 years, going through “cool” and “warm” phases.
Tropical cyclones do not form easily near the equator but can intensify rapidly. The wind pattern in the Indian Ocean helps initiate the cyclone spin near the equator. Without the storm-weakening wind shear, storms can move and strengthen more easily.
This research can help communities in the path of these rapidly intensifying storms better understand how to be prepared for them.
“I hope that this paper will bring a lot more interest in these types of storms,” Ray said. “One of the reasons why these types of storms have not received much attention is because most cyclone researchers work on the Atlantic and such storms are very rare there.”
. . .
“There has been a decline close to the equator, but there has been an increase at the same time away from the equator, in the Indian Ocean,” Ray said. “Overall, there is a decline definitely, but the decline is not this high, because there was an increase away from the equator.”
Full article here.
Tallbloke's Talkshop 
[…] Posted on September 1, 2023 by HiFast Study shows a decrease in Indian Ocean cyclones, due to natural climate cycle (PDO) […]
[…] Posted on September 1, 2023 by Rashid Faridi Study shows a decrease in Indian Ocean cyclones, due to natural climate cycle (PDO) […]
Yes we are seeing less extreme weather but we will see more extreme weather in the future. Because if we don’t say that, we don’t get published.
NASA-JPL says:
Pacific Decadal Oscillation (PDO)
In the ‘warm’ or ‘positive’ phase, the west Pacific Ocean becomes cool and the wedge in the east warms. A ‘cool’ phase occurred from 1947 to 1976 (29 years), and a ‘warm’ phase from 1977 to 1999 (22 years). However, more recently, the ‘warm’ and ‘cold’ phases have been much shorter.
In 1999, we entered into a ‘cold’ phase for about 4 years (1999-2002) followed by a ‘warm’ phase that continued for 3 years. The phase was then neutral until 2007, when we entered into a ‘cold’ phase that lasted through 2013. The last PDO phase shift was in 2014, when it turned strongly positive (‘warm’).
The PDO is an active topic of research and satellite data, such as that from Jason-3, helps scientists observe and understand the phenomenon. [bold added]
https://sealevel.jpl.nasa.gov/data/el-nino-la-nina-watch-and-pdo/pacific-decadal-oscillation-pdo/
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Perhaps recent extra variability of the PDO is linked to low sunspot cycles since 1996, but that’s a guess.
https://en.wikipedia.org/wiki/List_of_solar_cycles#Details_of_cycles_1_to_25
Number of days with a geomagnetic storm dropped away significantly since 2006-7. Mainly above 50, or even 75 before that, mainly below 50 since. Obvious outlier in 2003, the European heatwave year: ‘the hottest summer recorded in Europe since at least 1540’.
https://en.wikipedia.org/wiki/2003_European_heat_wave