The "Little Ice Age" hundreds of years ago still cools the bottom of the Pacific.
- The small ice age brought colder average temperatures in the 17th century
- . Researchers say that the temperatures in the Pacific lie behind those at the surface
- As a result, parts of the deep Pacific have long since cooled off Little Ice Age
Cheyenne Macdonald for Dailymail.com
With much of the ocean responding to the rising temperatures of today's world, the deep, dark waters on the bottom of the Pacific Ocean seem to do the opposite.
A Harvard study found parts of the depth The Pacific may become cooler as a result of a climate phenomenon that occurred hundreds of years ago.
In the 17th century, the Earth experienced a prolonged cooling period, referred to as the Little Ice Age, bringing cooler temperatures than usual Northern Hemisphere.
Although all of this has passed centuries, the deep Pacific seems to be located behind the waters near the surface and still responds to the Little Ice Age.
A Harvard study has revealed that parts of the deep Pacific may become cooler as a result of a centuries-old climate phenomenon. The models indicate that temperatures are dropping at a depth of about 2 kilometers.
"The climate varies over all time periods," said Peter Huybers, a professor at Harvard John A. Paulson's School of Engineering and Applied Sciences
"Some regional warming and cooling patterns, such as the Little Ice Age and the Middle Ages , are known.
"Our goal was to develop a model of how the ocean's internal properties respond to surface changes in climate. "
The medieval warm period was a period between the 9th and 12th centuries, when the earth's climate was on the warmer side.
It was not long before the Little Ice Age, which lasted from the 16th century onwards 19th century, although some argue that it started even earlier.
According to researchers from the Woods Hole Oceanographic Institution and Harvard University, this long-ago cooling period could still show its face in temperature's deep ocean.
"If the surface ocean generally cooled for most of the last millennium, the ocean's most isolated parts of the modern warming process could cool off," said Jake Gebbie, a physical oceanographer at the Woods Hole Oceanographic Institution .
To test this, the team compared measurements that scientists made at the HMS Challenger in the 1870s had, with modern data.
During the study in the late 1800s, researchers at that time dropped the thermometers deep into the ocean between 1872 and 1876, collecting a total of more than 5,000 measurements.
Around the 17th century, the Earth experienced a prolonged cooling period, the was called Little Ice Age, and brought in the northern hemisphere above average cool. 19659015] "We have analyzed these historical data for outliers and have considered a variety of corrections associated with the effects of pressure on the thermometer and stretching of the hemp rope used to lower thermometers," Huybers said.
The ocean of the world has warmed up in the last century.
In the Pacific, however, the temperatures are sinking. This effect could be observed at a depth of about 2 kilometers.
WHAT WAS THE "LITTLE ICE AGE"?
The impression of an artist from the Little Ice Age
In the 17th century, the earth experienced a prolonged cooling phase, known as Little It was called ice age, which brought cooler temperatures in many parts of the northern hemisphere than average.
It should have lasted from the 16th to the 19th century, though some believe it started even earlier.
It was not a true ice age, but at three intervals from the mid-17th to the 19th century it brought cold temperatures.
In Europe and North America, this meant colder winters, some of which destroyed farms and villages with towering glaciers.
The rivers also froze Many places and "Frostmessen" were held along the Thames.
Changes in sea ice disrupted travel and navigation in Iceland and the destruction of the crop led to years of famine in some parts of Europe.
The "Little Ice Age" was not a true ice age, but brought at three intervals from the mid-17th century to the 19th century cold temperatures. In many places, rivers were frozen, and along the Thames were held "Frostmessen"
. According to the team, this could affect our understanding of how much heat the sea has absorbed in the last century, suggesting 30 percent less than previously thought.
Their findings are published in a new paper in the journal Science.
"The close match between the predictions and the observed trends gave us the assurance that this is a real phenomenon," Gebbie said.
"Part of the heat needed to balance the ocean with an atmosphere of more greenhouse gases seemed to be already present in the deep Pacific," Huybers said.
. These results reinforce the momentum for understanding the causes of the Medieval Warm Period and the Little Ice Age as a way to better understand modern warming trends.