Extreme Temperatures
Top U.S. corn and soybean producing state Iowa has received the most spring rainfall since records began 141 years ago, slowing crop plantings and threatening to reduce yields, an Iowa climatologist said on Friday.
"From March through May, which is our spring record keeping period, Iowa had received 17.48 inches of rain as of Thursday," Iowa State Climatologist, Harry Hillaker said. "There may be another 0.15 inch added to that today."
Hillaker said the old record of 15.36 inches was set in 1892 but rainfall seen from March through to May is the most since records began.
Hillaker said typical March-May rainfall in the state was 10.22 inches. "That would be normal and is based on rainfall received for the past 30 years," he said.
Excessive wet weather in the U.S. Midwest has slowed seedings of corn and soybeans, pushing corn plantings up to the end-of-May deadline that farmers can plant without suffering cutbacks in crop insurance coverage.
Summers began cooling in Northern Europe after 1300 A.D., negatively impacting growing seasons, as reflected in the Great Famine of 1315 to 1317. Expanding glaciers and ice cover spreading across Greenland began driving the Norse settlers out. The last, surviving, written records of the Norse Greenland settlements, which had persisted for centuries, concern a marriage in 1408 A.D. in the church of Hvalsey, today the best preserved Norse ruin.
Colder winters began regularly freezing rivers and canals in Great Britain, the Netherlands and Northern France, with both the Thames in London and the Seine in Paris frozen solid annually. The first River Thames Frost Fair was held in 1607. In 1607-1608, early European settlers in North America reported ice persisting on Lake Superior until June. In January, 1658, a Swedish army marched across the ice to invade Copenhagen. By the end of the 17th century, famines had spread from northern France, across Norway and Sweden, to Finland and Estonia.
Reflecting its global scope, evidence of the Little Ice Age appears in the Southern Hemisphere as well. Sediment cores from Lake Malawi in southern Africa show colder weather from 1570 to 1820. A 3,000 year temperature reconstruction based on varying rates of stalagmite growth in a cave in South Africa also indicates a colder period from 1500 to 1800. A 1997 study comparing West Antarctic ice cores with the results of the Greenland Ice Sheet Project Two (GISP2) indicate a global Little Ice Age affecting the two ice sheets in tandem.
This would occur because this year's long, late winter has cooled the ocean, which, coupled with weak solar activity in recent months, could have a direct effect on the climate.
The last time this happened was in 1816, known as the "year without a summer" or "the year of poverty." At that time the sun was in the midst of the Dalton Minimum, when magnetic activity was extremely low, and Tambora volcano erupted in Indonesia with a column of smoke so thick that it caused a decline in world temperatures.
Europeans are wondering whatever happened to global warming. Climate institutes, who just years ago predicted warm, snow-less winters, have turned 180° and are now insisting that the Little Ice Age-like conditions that have gripped Europe over the last 5 years are actually signs of global warming after all! Fortunately, very few people believe them.
Roughly 13,000 years ago, something touched off the 'Big Freeze' - a 1,300-year-long cold snap formally called the Younger Dryas stadial - that caused major climate changes and droughts.
These have been blamed for the extinction of the mammoth and the saber-toothed tiger, and also the downfall of the ancient Clovis culture. However, what that something was has been debated for years.
One idea that's proven popular over the years is that a meteorite or comet struck the planet, somewhere around what is now Hudson Bay. However, if something big enough to melt the Laurentide ice sheet had hit the planet there should have been some indication of it, in the form of a crater, or shocked and melted rocks, or 'impact spherules'. And, until recently, the evidence was lacking.
France's main weather channel has announced that there is a 70 percent chance of this summer being cold and wet across Spain, France, Portugal, Germany and Austria.
Cold maritime fronts and weak solar activity during the winter months have not only given us a chillier Spanish spring than normal, they're also going to make the summer months unusually dreary and rainy.
According to Meteo, June and July are only likely to have short periods of summer heat which will in turn bring heavy storms in August.
September and October are likely to register higher average temperatures and less rain, the French weather agency announced on Monday.
The year without summer, 1816, is not an old wives' tale.
Overcast skies and cold temperatures across the northern hemisphere led to severe crop failures and food shortages in France, England, Ireland and the US during the summer months of that year.

In this May 27, 2013 photo released by the National Weather Service, ice and water cover the roads in Galena, Alaska.
After rising floodwaters breached a wall protecting the Galena airport, the National Guard flew in to evacuate any remaining residents who wanted to leave the community of nearly 500, the Anchorage Daily News reported.
Evacuee Shane Edwin stepped off a flight to Fairbanks on Tuesday afternoon and described the scene he left behind as "a whole bunch of chaos." "The roads are all gone," he said. "The houses are flipped over. It's just trashed. I couldn't grab anything, not even my ID. The water came so fast."
Additional images

Glacier retreat has markedly accelerated in the period since 2004 - and many new species lie beneath
Samples of 400-year-old plants known as bryophytes have flourished under laboratory conditions.
Researchers say this back-from-the-dead trick has implications for how ecosystems recover from the planet's cyclic long periods of ice coverage.
The findings appear in Proceedings of the National Academy of Sciences.
They come from a group from the University of Alberta, who were exploring an area around the Teardrop Glacier, high in the Canadian Arctic.
The glaciers in the region have been receding at rates that have sharply accelerated since 2004, at about 3-4m per year.
John Dee, meteorologist for Global Weather Monitoring said from 1.0 to 3.0 inches or more of rain fell over the weekend in the central Midwest and 0.5 inch to 1.5 inches is expected at midweek in the northern Midwest.
"The only planting that will take place will be in the southern two-thirds of Illinois, Indiana and Ohio the next couple of days," he said. "If it were all planted this would be perfect, there was pretty good planting progress last week but not like the week before."
Farmers have been scrambling to plant corn and soybeans through mid and late May in an attempt to catch up from weather delays in April and early May.
In its weekly crop progress report released on May 20, the U.S. Department of Agriculture said corn planting was 71 percent complete, up from 28 percent a week ago but still behind the 79 percent five-year average seeding pace.
USDA has projected U.S. 2013 corn plantings at 97.3 million acres, the largest land area devoted to its production since the 1930s.
Soybean planting progress rose to 24 percent from 6 percent a week earlier, USDA said.
USDA will release updated planting data in its weekly crop progress report late on Tuesday.

Germany’s mean temperature trend continues falling sharply (1998 – 2012). 2013 so far is well below normal.
This past weekend, snow even fell in parts of Germany at elevations down to 600 meters.
No reasons are cited as to why the spring 2013 is so cold. The Arctic is covered with ice and so it can't be an exposed Arctic sea disrupting atmospheric patterns.
Comment: Indeed, so the question is why are they falsifying data when the climate is changing?
Last Ice Age took just SIX months to arrive