现在北半球正在干热状态中

golden21c

近几年在全球暖化的影响下，每年北半球的8月都很干旱，今年似乎也不例外。中国自然不必说了，8.1的新闻1+1刚播了，北美也是喊旱。

golden21c

http://www.theguardian.com/world ... g-napa-wildfire--on
California severe drought intensifying as Napa wildfire rages on

Map released by US Drought Monitor classified nearly 80% of California as in 'extreme' drought, the second highest category

  Share 55
  inShare1
  Email

  Rory Carroll in Los Angeles
  theguardian.com, Friday 4 July 2014 14.51 EDT  
  Jump to comments (138)

california drought As the California drought continues, the grounds at the California State Capitol are under a reduced watering program. Photograph: Justin Sullivan /Getty

California's drought is intensifying, turning more farms to dust, fanning fires, draining fountains and driving “unbelievable” prices at water auctions.

A map released by the US Drought Monitor on Thursday classified nearly 80% of California as in “extreme” drought, the second highest of five categories. Within that area an estimated 36% is “exceptional” drought, the highest category.

After another week of “little if any precipitation” exceptional dryness spread south to afflict Ventura, Los Angeles and Orange counties, according to the monitor report.

The entire state has been deemed in “severe” drought since April, the first time this has happened in 15 years.

More than 1,000 firefighters continued on Friday to battle a 4,300 acre wildfire in Napa county. Vineyards and homes have so far largely escaped but about 500 people have been evacuated.

"We are about six weeks ahead of where we normally are in fire season in regards to how dry the vegetation is," one firefighter, Mike Forster, told CNN.

Many crops in the central valley have withered. For the first time in half a century federal authorities are not providing irrigation water, citing scarcity and more urgent priorities.

The price of water in the private market has reportedly soared tenfold in the past five years. It now costs $2,200 for for an acre-foot, a measurement approximate to covering a football field with a foot of water.

Water districts and landowners with surplus water caches are making millions at auctions.

"This year the market is unbelievable," Thomas Greci, the general manager of the Madera Irrigation District, told AP.

The district recently made nearly $7m from selling about 3,200 acre-feet. "And this is a way to pay our bills." Farmers bought it all – outbidding the city of Santa Barbara.

The State Water Project, which supplies much of the state, has slashed allocations, prompting mandatory and voluntary conservation measures by local authorities and residents.

The Getty Center in Los Angeles and the Getty Villa in Pacific Palisades shut down most of their fountains and pools and said they will remain shut until the government lifts emergency declarations.

Despite two emergency declarations by governor Jerry Brown, and appeals for a 20% voluntary reduction in consumption, California's water use has fallen only 5%.

zuoning

原来如此，怪不得我们这热得要死。

whywhy

三峡功不可没！只是功劳大小的问题了！

golden21c

澳大利亚也喊热

http://www.commondreams.org/news ... w-color-added-index

Burning 'Deep Purple': Australia So Hot New Color Added to Index

An 'unparalleled setting of new heat extremes' continues
by
Jon Queally, staff writer

Deep purple... the Bureau of Meteorology's interactive weather forecasting chart has added new colors. (Photo: Bureau of Meteorology)Wild fires continue to rage across Australia Tuesday and temperatures have become so hot the country's Bureau of Meteorology was forced to add a new color—deep purple—to show areas that have exceeded all-time heat records.

Previously the Bureau's heat index was capped at 48°C (118.4°F), but now recorded temperatures of over 50°C (122°F) have pushed the limit of the scale to an unheard of 54°C, which is equivalent to 129°F.

‘‘We are well past the time of niceties, of avoiding the dire nature of what is unfolding, and politely trying not to scare the public."–Liz Hanna, climate scientists

"The scale has just been increased today and I would anticipate it is because the forecast coming from the bureau's model is showing temperatures in excess of 50 degrees," David Jones, head of the bureau's climate monitoring and prediction unit, told reporters.

Indicating that the worst may yet to come, Jones added that, "The air mass over the inland is still heating up - it hasn't peaked."

Climate scientists in Australia—with Jones among them—say the fires and the heat are unprecedented in scale and intensity, but that Australians should understand the destructive temperatures and ensuing fires across Tasmania and southern sections of the country are the new normal of runaway climate change.

‘The current heatwave – in terms of its duration, its intensity and its extent – is now unprecedented in our records,’’ Jones was quoted as saying in The Age.

‘‘Clearly, the climate system is responding to the background warming trend. Everything that happens in the climate system now is taking place on a planet which is a degree hotter than it used to be.’’

“Those of us who spend our days trawling – and contributing to – the scientific literature on climate change are becoming increasingly gloomy about the future of human civilization,’’ Liz Hanna, convener of the human health division at the Australian National University’s Climate Change Adaptation Network, told The Age in a separate interview.

‘‘We are well past the time of niceties, of avoiding the dire nature of what is unfolding, and politely trying not to scare the public," she said. "The unparalleled setting of new heat extremes is forcing the continual upwards trending of warming predictions for the future, and the timescale is contracting.’’

Responding to the news from Australia, The Guardian's Damian Carrington put the heat and fires in a global context:

golden21c

NASA | Projections of Temperature and Precipitation in the 21st Century
http://www.youtube.com/watch?v=2 ... RxRx4PdcyZOe_Xk-fcf

golden21c

Hot spots: Global temperature rise
                On average, global temperatures will exceed historical norms as soon as 2047 and no later than 2069, according to new research by scientists at the University of Hawaii at Manoa. In some places, it will happen a lot sooner: 2020 in Manokwari, Indonesia, and 2023 in Kingston, Jamaica, the researchers predict. For Washington, it will be 2047. If concerted steps are taken to rapidly mitigate carbon dioxide emissions, the warmup will be slowed by decades.

http://apps.washingtonpost.com/g/page/world/hot-spots/506/

golden21c

http://waterwatch.usgs.gov/

golden21c

New Mexico's drought problem

Drought conditions in the west | New Mexico’s long-term drought

Nearly 87% of the West is in a drought, but nowhere is it worse than in New Mexico, where trees are dying, crops are failing and the Rio Grande is running dry.

golden21c

今年的全球粮食产量是否有影响？要早点预判。

piesunny

确实如此，记得二十年前，温度还没有这么高，这么长。

golden21c

http://drought.unl.edu/Planning/ ... oricalPDSIMaps.aspx

golden21c

全球的降雨情况
http://www.viewsoftheworld.net/?p=1841

xuelangcn

这气候，是打算把人类温水煮青蛙。

golden21c

将汽车全部改为电动车，推广太阳能、风能，发电取消火电相信一下子凉快不少。
将城市绿化品种改为光合效率高、生长速度快、价格便宜的国槐、刺槐、泡桐等等适合当地的绿化树种，大力栽植。
相信会凉快不少！

golden21c

这几年的北方在节气小雪的时候已经很少见到雪花了。