Showing posts with label extreme. Show all posts
Showing posts with label extreme. Show all posts

Wednesday, February 28, 2018

Really extreme' global weather event leaves scientists aghast

Are we not frightened? Are we unaware? Are we asleed at thhe wheel? Or are we stipid.

Climate scientists are used to seeing the range of weather extremes stretched by global warming but few episodes appear as remarkable as this week's unusual heat over the Arctic.

Zack Labe, a researcher at the University of California at Irvine, said average daily temperatures above the northern latitude of 80 degrees have broken away from any previous recordings in the past 60 years.

"To have zero degrees at the North Pole in February - it's just wrong," said Amelie Meyer, a researcher of ice-ocean interactions with the Norwegian Polar Institute. "It's quite worrying." Read More

Monday, March 31, 2014

Planet at Risk

Human interference with the climate system is occurring, and climate change poses risks for human and natural systems . The assessment of impacts, adaptation, and vulnerability in the Working Group II contribution to the IPCC's Fifth Assessment Report (WGII AR5) evaluates how patterns of risks and potential benefits are shifting due to climate change. It considers how impacts and risks related to climate change can be reduced and managed through adaptation and mitigation. The report assesses needs, options, opportunities, constraints, resilience, limits, and other aspects associated with adaptation.

Climate change involves complex interactions and changing likelihoods of diverse impacts. A focus on risk, which is new in this report, supports decision-making in the context of climate change, and complements other elements of the report. People and societies may perceive or rank risks and potential benefits differently, given diverse values and goals.

Compared to past WGII reports, the WGII AR5 assesses a substantially larger knowledge base of relevant scientific, technical, and socioeconomic literature. Increased literature has facilitated comprehensive assessment across a broader set of topics and sectors, with expanded coverage of human systems, adaptation, and the ocean. More

 

Wednesday, March 5, 2014

Extreme weather is 'silver lining' for climate action: Christiana Figueres

Devastating extreme weather including recent flooding in England, Australia's hottest year on record and the US being hit by a polar vortex have a "silver lining" of boosting climate change to the highest level of politics and reminding politicians that climate change is not a partisan issue, according to the UN's climate chief. Christiana Figueres said that it was amoral for people to look at climate change from a politically partisan perspective, because of its impact on future generations.

The "very strange" weather experienced across the world over the last two years was a sign "we are [already] experiencing climate change," the executive secretary of the UN climate secretariat told the Guardian.

The flooding of thousands of homes in England because of the wettest winter on record has brought climate change to the forefront of political debate in the UK. The pprime minister, David Cameron, when challenged by Labour leader, Ed Miliband, on his views on man-made climate change and having climate change sceptics in his cabinet, said last week: "I believe man-made climate change is one of the most serious threats that this country and this world faces."

Climate change was barely mentioned at all in the 2012 US election battle until superstorm Sandy struck New York, prompting the city's then mayor, Michael Bloomberg, to endorse Barack Obama's candidacy because he would "lead on climate change."

Figueres said: "There's no doubt that these events, that I call experiential evidence of climate change, does raise the issue to the highest political levels. It's unfortunate that we have to have these weather events, but there is a silver lining if you wish, that they remind us is solving climate change, addressing climate change in a timely way, is not a partisan issue."

She added: "We are reminded that climate change events are for everyone, they're affecting everyone, they have much, much longer effects than a political cycle. Frankly, they're intergenerational, so morally we cannot afford to look at climate change from a partisan perspective."

Figueres said that examples of recent extreme weather around the world were a sign climate change was here now. "If you take them individually you can say maybe it's a fluke. The problem is it's not a fluke and you can't take them individually. What it's doing is giving us a pattern of abnormality that's becoming the norm. These very strange extreme weather events are going to continue in their frequency and their severity … It's not that climate change is going to be here in the future, we are experiencing climate change."

Figueres was speaking in London before meeting businesses including Unilever, Lafarge and Royal Dutch Shell to urge them to put pressure on governments to take action on climate change, ahead of renewed international negotiations in Bonn next week to flesh out details of a draft climate treaty to be laid out in Lima this year and agreed in Paris at the end of 2015.

"2014 is a crucial year because of the timing of next year, [in 2015] there will be very little time work on the actual agreement. We have to frontload the work," she said.

Peru's foreign minister told the Guardian in January that the Lima meeting in December must produce a first draft of a deal to cut carbon emissions, which will be the first of its kind after efforts to get legally binding agreement for cuts from most of the world's countries failed at a blockbuster meeting in Copenhagen in 2009.

Asked if a bad deal was better than no deal next year, she said: "Paris has to reach a meaningful agreement because, frankly, we are running out of time."

But she dismissed parallels with the run-up to the Copenhagen summit, saying the frequency of extreme weather events, lower renewable energy costs and progress on climate legislation at a national level meant it was different this time round.

"I hope that we don't need too many more Sandys or Haiyans or fires in Australia or floods in the UK to wake us up. My sense is there is already much momentum.We have 66 governments that have climate legislation, we have a total of 500 laws around the world on climate, whereas before Copenhagen we only had 47."

But the grouping of the world's 47 "least developed" countries said this week that they would want far more money to adapt their economies to climate change than the $100bn a year that been so far proposed by rich countries.

"We will want more than the $100bn to agree to a new Paris protocol," said Quamrul Choudhury, a lead negotiator for the group which includes many African and Asian countries. "On top of that we will want a legal mechanism to compensate for 'loss and damage' [compensation for extreme climate change events]. There should definitely be some space in the [final] treaty for that," he said in London.

He called on rich countries to compromise. "The battle lines are drawn. Everyone wants to defend their country and nobody will give an inch, but everyone has to make some sacrifice or we won't have a deal. We need high-level political commitment to raise ambition."

Choudhury, who is also Bangladesh's climate envoy to the United Nations, met British climate negotiators ahead of the Bonn talks. "I am optimistic that the world can avoid another diplomatic disaster like Copenhagen in 2009. There have been major changes since then. In 2008-09 we knew it would be very expensive to reduce emissions. Now we know it does not cost very much. It's not expensive, not a Herculean task. Countries like the UK know they can reduce emissions by 65% without it costing very much at all.

"But even if we have an ambitious mitigation target [to cut emissions] adaptation must be the cornerstone of a new treaty. This is not a zero-sum game. If we treat it like that there will be no Paris protocol," he said.

Figueres later agreed that the $100m proposed in 2009 as compensation for poor countries would not be enough for them to build defences and adapt their economies. "It was a figure plucked from a hat … $100bn is not enough [to meet] the mitigation and not at all for the adaptation costs. The International Energy Agency has suggested it may cost $1 trillion over 25 years just for adaptation. $100bn is a freckle on the map of what needs to be invested."

A major UN climate science panel report to be published at the end of this month will spell out the impacts of climate change on humanity and the natural world.Leaked versions of the report say agricultural production will decline by up to 2% every decade for the rest of the 21st century. More

 

Tuesday, March 4, 2014

Weather in Singapore driest since 1869

The prolonged dry weather affecting Singapore since mid-January has set a new record for the driest month since 1869, according to the National Environment Agency (NEA).

At the Changi climate station, the rainfall total recorded last month was 0.2mm, breaking the previous record of 6.3mm in February 2010.

Apart from being the driest month ever, last month is the most windy month in the last 30 years.

At the Changi climate station, the average daily wind speed of 13.3 kilometre per hour (kph) recorded last month exceeds the previous high of 12.5kph in January 1985.

The prolonged dry conditions have also set a new record for the lowest average daily relative humidity of 74.5%.

The previous record low for February and any month of the year was 76.9% (February 1968) and 74.6% (June 2013).

The last day of significant rainfall was on February 16 when between 0.2mm and 29m was recorded in various parts of the island.

Since then, there has been little or no rainfall, with Singapore entering another period of dry spell on February 17.

The dry weather affecting Singapore and the surrounding region is expected to persist in the first half of this month.

With the expected onset of the inter-monsoon in the second half of this month, the winds in the region will turn light and variable in direction.

Increased rainfall can be expected in the later part of the month.

With the dry weather expected to continue, the National Water Agency has started a public campaign to get everyone to conserve water. – Bernama, March 4, 2014. More

 

Wednesday, April 18, 2012

IOC Assesses Climate Vulnerability of South-West Indian Ocean Islands

13 April 2012: The Indian Ocean Commission (IOC) project on climate change adaptation, titled "Acclimate," has released five assessments of climate change vulnerability in the South-West Indian Ocean islands of the Comoros, Madagascar, Mauritius, Reunion (France) and the Seychelles.

For each case, the reports provide qualitative assessments of climate vulnerability across various sectors including: integrated water management; fisheries; risk and disaster management; energy; food security; and security and sovereignty.

According to the assessment reports, these countries face shared challenges due to climate change, such as water scarcity, extreme weather events, sea level rise and coastal erosion, and coral bleaching. The common methodological framework across all five assessments has allowed production of a regional strategy for climate change adaptation, which will be submitted for political acceptance by the concerned countries at the end of 2012.

Acclimate, which started in 2008, was commenced to strengthen the capacity of South-West Indian Ocean island States to adapt to climate change. The assessments aim to share knowledge and contribute to mainstreaming climate issues into national and regional policy processes. [Acclimate Website (in French)] [Comoros Assessment Report] [Madagascar Assessment Report] [Mauritius Assessment Report] [La Réunion (France) Assessment Report] [Seychelles Assessment Report] [Synthesis and Roadmap to a Regional Strategy for Climate Change Adaptation] [Indian Ocean Commission Website] More



 

Saturday, March 31, 2012

Extreme Weather Threatens Rich Ecosystems

Extreme weather such as hurricanes, torrential downpours and droughts will become more frequent in pace with global warming. Consequently, this increases the risk for species extinction, especially in bio diverse ecosystems such as coral reefs and tropical rainforests.

Human impact means that flora and fauna become extinct at a rate 100–1000 times higher than normal. Climate change has been deemed as one of the main causes of species depletion.

A research team in theoretical biology at Linköping University has, through the use of mathematical modelling and simulation, studied how the dynamics of different types of ecosystems may be affected by significant environment fluctuations.

Linda Kaneryd, doctoral student and lead author of a study recently published in the journal, Ecology and Evolution, says the results were surprising.

“Several previous studies of food web structures have suggested that species-rich ecosystems are often more robust than species-poor ecosystems. However at the onset of increased environmental fluctuations, such as extreme weather, we see that extreme species-rich ecosystems are the most vulnerable and this entails a greater risk for a so-called cascading extinction.” More