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Climate Change Causing Extreme Weather

Jack Hays said:
Africa’s Short term Freshwater Trends Largely Driven By Natural Variability

By P Gosselin on 21. August 2019
A recent study finds that Africa’s freshwater storages are driven by natural variability.

Image: ScienceDirect​
Hat-tip: Mary Brown
The authors examined GRACE satellite data and also found that Central Africa’s water storages are partially controlled by deforestation, and in northern Africa are controlled by groundwater extraction.
What follows is the paper’s abstract, which does not mention anthropogenic climate change:
The freshwater resources in Africa are vulnerable to natural variabilities as well as anthropogenic interventions. In this study, temporal (April 2002–June 2017) Gravity Recovery and Climate Experiment (GRACE) data are integrated, in a geographic information system environment, with rainfall, temperature, evapotranspiration, and altimetry remote sensing datasets to monitor the short-term trends in terrestrial water storage (TWS) over the African hydrogeologic systems and to explore their origins. Results show that short-term trends over the African continent are largely driven by natural variability such as changes in rainfall, evapotranspiration, and associated variations in lake levels. Exceptions to this observation include central Africa, where deforestation is found to additionally drive changes in TWS, as well as northern Africa, where TWS changes are dominated by anthropogenic groundwater extraction from fossil aquifers. Findings highlight the need for integrative responses at local, national, regional, and international levels by the African nations to overcome current and future challenges related to freshwater availability in Africa.”
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And....
 
Jack Hays said:
Not caused by climate change.
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1. Do Freshwater Trends in Africa fall under the Topic of "Extreme Weather"?
2. Are you responding to somebody with this off-topic post?
3. Do you just find any garbage on your blog sites, and post that garbage on any thread?
 
Media_Truth said:
1. Do Freshwater Trends in Africa fall under the Topic of "Extreme Weather"?
2. Are you responding to somebody with this off-topic post?
3. Do you just find any garbage on your blog sites, and post that garbage on any thread?
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It’s

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Media_Truth said:
1. Do Freshwater Trends in Africa fall under the Topic of "Extreme Weather"?
2. Are you responding to somebody with this off-topic post?
3. Do you just find any garbage on your blog sites, and post that garbage on any thread?
Click to expand...

Yes. Drought.
 
Extreme weather events and climate disasters are getting more common all across the world.

"Extreme weather events, worsened by climate change, are taking a toll on people’s lives from Argentina to China and Ecuador to Malaysia. And the United Nations says these catastrophes are only expected to become more frequent, reaching a rate of one disaster per week, the Guardian reported.

Many natural calamities in various parts of the world, such as Cyclone Idai in Mozambique and widespread droughts in India, have garnered international attention due to the large-scale impact they've had on nearby communities. But “lower-impact events” are also causing death, displacement, and suffering at a much faster rate than predicted, Mami Mizutori, the UN secretary-general’s special representative on disaster risk reduction, told the Guardian."

A Climate Disaster Takes Place Every Week Around the World, UN Says
 
[h=2]New Study: Pre-1900 Rainfall Events In Sydney, Melbourne “More Extreme” Than Modern Times[/h]By P Gosselin on 25. August 2019
The global warming crazies keep insisting that weather has become more extreme, but whenever a study looks at the past weather, it finds the opposite to be true.
The latest is a new study titled “Historical extreme rainfall events in southeastern Australia” authored by Ashcroft et al appearing in the journal Weather and Climate Extremes.
It finds no trend in NSW Australia extreme rainfall events, and oceanic cycles play a major role in the longer term, decadal scale variability.
Hat-tip: Reader Mary Brown
Looking back 178 years
The new paper describes rainfall in three of Australia’s largest cities for the last 178 years using several mean and extreme rainfall indices.
The paper also found several extreme daily rainfall events in the pre-1900 period in Sydney and Melbourne which “appear to be more extreme than anything in the modern record”.
Abstract
The cities of Melbourne, Sydney and Adelaide are home to almost half of the Australian population, and are often exposed to extreme rainfall events and high year-to-year rainfall variability. However the majority of studies into rainfall in these cities, and southeastern Australia in general, are limited to the 20th century due to data availability. In this study we use rainfall data from a range of sources to examine four rainfall indices for Melbourne, Sydney and Adelaide for 1839–2017. We derive the total rainfall, number of raindays, wettest day of the month and the simple daily intensity index for each city over the past 178 years, and find relatively consistent relationships between all indices despite potential data quality issues associated with the historical data. We identify several extreme daily rainfall events in the pre-1900 period in Sydney and Melbourne that warrant further examination as they appear to be more extreme than anything in the modern record. We find a moderate and relatively stable relationship between El Niño–Southern Oscillation (ENSO) and annual variations of total rainfall and the number of raindays at all three cities over the research period, but no relationship between ENSO and the annual wettest day, in agreement with other studies using shorter time series.”
​
 
Jack Hays said:
[h=2]New Study: Pre-1900 Rainfall Events In Sydney, Melbourne “More Extreme” Than Modern Times[/h]By P Gosselin on 25. August 2019
The global warming crazies keep insisting that weather has become more extreme, but whenever a study looks at the past weather, it finds the opposite to be true.
The latest is a new study titled “Historical extreme rainfall events in southeastern Australia” authored by Ashcroft et al appearing in the journal Weather and Climate Extremes.
It finds no trend in NSW Australia extreme rainfall events, and oceanic cycles play a major role in the longer term, decadal scale variability.
Hat-tip: Reader Mary Brown
Looking back 178 years
The new paper describes rainfall in three of Australia’s largest cities for the last 178 years using several mean and extreme rainfall indices.
The paper also found several extreme daily rainfall events in the pre-1900 period in Sydney and Melbourne which “appear to be more extreme than anything in the modern record”.
Abstract
The cities of Melbourne, Sydney and Adelaide are home to almost half of the Australian population, and are often exposed to extreme rainfall events and high year-to-year rainfall variability. However the majority of studies into rainfall in these cities, and southeastern Australia in general, are limited to the 20th century due to data availability. In this study we use rainfall data from a range of sources to examine four rainfall indices for Melbourne, Sydney and Adelaide for 1839–2017. We derive the total rainfall, number of raindays, wettest day of the month and the simple daily intensity index for each city over the past 178 years, and find relatively consistent relationships between all indices despite potential data quality issues associated with the historical data. We identify several extreme daily rainfall events in the pre-1900 period in Sydney and Melbourne that warrant further examination as they appear to be more extreme than anything in the modern record. We find a moderate and relatively stable relationship between El Niño–Southern Oscillation (ENSO) and annual variations of total rainfall and the number of raindays at all three cities over the research period, but no relationship between ENSO and the annual wettest day, in agreement with other studies using shorter time series.”
​
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Olookablog
 
Bergslagstroll said:
Extreme weather events and climate disasters are getting more common all across the world.

"Extreme weather events, worsened by climate change, are taking a toll on people’s lives from Argentina to China and Ecuador to Malaysia. And the United Nations says these catastrophes are only expected to become more frequent, reaching a rate of one disaster per week, the Guardian reported.

Many natural calamities in various parts of the world, such as Cyclone Idai in Mozambique and widespread droughts in India, have garnered international attention due to the large-scale impact they've had on nearby communities. But “lower-impact events” are also causing death, displacement, and suffering at a much faster rate than predicted, Mami Mizutori, the UN secretary-general’s special representative on disaster risk reduction, told the Guardian."

A Climate Disaster Takes Place Every Week Around the World, UN Says
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[FONT=&quot][/FONT]
[h=1]Caution: Pretty Pictures Can Fool You[/h][FONT=&quot]Guest Essay by Kip Hansen In today’s digital and Internet-of-Things world, it is easy to transform information into images — graphs, charts and other visuals that are colorful and informative. Modern math and statistical software packages can do it all for you with a few clicks of your mouse or taps on the screen. …
[/FONT]
52 mins ago August 27, 2019 in measurement, media.
 
Bergslagstroll said:
Extreme weather events and climate disasters are getting more common all across the world.

"Extreme weather events, worsened by climate change, are taking a toll on people’s lives from Argentina to China and Ecuador to Malaysia. And the United Nations says these catastrophes are only expected to become more frequent, reaching a rate of one disaster per week, the Guardian reported.

Many natural calamities in various parts of the world, such as Cyclone Idai in Mozambique and widespread droughts in India, have garnered international attention due to the large-scale impact they've had on nearby communities. But “lower-impact events” are also causing death, displacement, and suffering at a much faster rate than predicted, Mami Mizutori, the UN secretary-general’s special representative on disaster risk reduction, told the Guardian."

A Climate Disaster Takes Place Every Week Around the World, UN Says
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Your link also discusses the financial implications of Climate Change - present and future.

As the effects of climate change worsen, and extreme weather events become more devastating, the costs of their associated damage is also likely to rise. Climate-related disasters are estimated to cost $520 billion a year, and the additional spending required to build infrastructure that will be able to withstand rising global temperatures is predicted to be $2.7 trillion in total over the next 20 years.
 
Extreme rainfall in Japan.

"Torrential rain triggered floods and landslides in Japan on Wednesday, killing at least two people and prompting authorities to order more than 900,000 people to leave their homes while another million were advised to move to safety.
More than twice the usual rainfall for the whole of August has fallen over parts of the southern island of Kyushu over the past 48 hours, washing away roads, causing rivers to burst their banks and forcing the suspension of train services."

Record rain in south Japan brings flood chaos, kills at least two - Reuters
 
Bergslagstroll said:
Extreme rainfall in Japan.

"Torrential rain triggered floods and landslides in Japan on Wednesday, killing at least two people and prompting authorities to order more than 900,000 people to leave their homes while another million were advised to move to safety.
More than twice the usual rainfall for the whole of August has fallen over parts of the southern island of Kyushu over the past 48 hours, washing away roads, causing rivers to burst their banks and forcing the suspension of train services."

Record rain in south Japan brings flood chaos, kills at least two - Reuters
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That extreme rainfall is being caused by the former Super-Typhoon Jebi, which has now been downgraded to a Category 2 typhoon. Typhoon Jebi is on track towards Alaska, but should be no more than a tropical storm by the time it reaches Alaska.

Notice how Reuters fails to even mention that Japan is in the process of being hit by a typhoon. They just pretend like it was a normal rain storm. Which just demonstrates the depth of their dishonesty.
 
Glitch said:
That extreme rainfall is being caused by the former Super-Typhoon Jebi, which has now been downgraded to a Category 2 typhoon. Typhoon Jebi is on track towards Alaska, but should be no more than a tropical storm by the time it reaches Alaska.

Notice how Reuters fails to even mention that Japan is in the process of being hit by a typhoon. They just pretend like it was a normal rain storm. Which just demonstrates the depth of their dishonesty.
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:lol: Pretty disingenuous. They talk about about two deaths and an evacuation of a large number of people. This was the important point of the article. Whether the massive rains came from a typhoon, a buildup of rainclouds or a something else is fairly irrelevant.
 
The negative effects of climate change will outweigh the positive effects for farmers in Europe.

"Any advantages to European agriculture from a warming world will be outweighed by the losses from extreme events and environmental stress, leading to a probable large economic loss for farming in the next 30 years, research on the impacts of the climate crisis has found.

While some have pointed to longer growing seasons and a wider range of crops becoming viable in northern Europe as benefits from temperature rises, the effects on rainfall and extreme conditions mean farming is already suffering.

Heatwaves this year and last year have exposed the vulnerability of agriculture, according to the assessment from Europe’s green watchdog, the European Environment Agency."

Benefits to farmers of global heating outweighed by losses, says report | Environment | The Guardian
 
Bergslagstroll said:
The negative effects of climate change will outweigh the positive effects for farmers in Europe.

"Any advantages to European agriculture from a warming world will be outweighed by the losses from extreme events and environmental stress, leading to a probable large economic loss for farming in the next 30 years, research on the impacts of the climate crisis has found.

While some have pointed to longer growing seasons and a wider range of crops becoming viable in northern Europe as benefits from temperature rises, the effects on rainfall and extreme conditions mean farming is already suffering.

Heatwaves this year and last year have exposed the vulnerability of agriculture, according to the assessment from Europe’s green watchdog, the European Environment Agency."

Benefits to farmers of global heating outweighed by losses, says report | Environment | The Guardian
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And if you believe The Guardian... I have a bridge to sell you!
 
Lord of Planar said:
And if you believe The Guardian... I have a bridge to sell you!
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What the Guardian won't tell you is that the northern latitudes (Alaska, Canada, Norway, Finland, Russia, and Siberia) are experiencing boons in agricultural growth as permafrost melts and creates more arable lands. Since the 1990s alone Alaska's barley and oat production has increased by more than 150%. Currently 85% of Alaska is permafrost, but if the Modern Warming Period continues as it has for the last 140 years, then it may drop to between 65% and 70% by 2100 - if we are lucky.
 
Glitch said:
What the Guardian won't tell you is that the northern latitudes (Alaska, Canada, Norway, Finland, Russia, and Siberia) are experiencing boons in agricultural growth as permafrost melts and creates more arable lands. Since the 1990s alone Alaska's barley and oat production has increased by more than 150%. Currently 85% of Alaska is permafrost, but if the Modern Warming Period continues as it has for the last 140 years, then it may drop to between 65% and 70% by 2100 - if we are lucky.
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What you seem to be oblivious about is that the tiny amount of barley and oat production in Alaska is trivial, even if it doubles or triples.

Best case scenario MIGHT have Alaska being able to export a small amount to other places.

Warming is a net loss, no question, even if Canada and Alaska become marginally better producers.

https://ipmdata.ipmcenters.org/documents/cropprofiles/AKcerealgrains2009.pdf

Glad to see you’re actually acknowledging warming though. Bet you’re gonna be backtracking on that ASAP...
 
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