Record low temp for Northern Hemisphere

THE COLDEST temperature ever recorded on Earth was the - 89.2 Celsius (- 128.6 F) recorded in 1983 at the high- altitude Vostok weather station in Antarctica.

Geneva, Sept. 24: For all the recent talk of global warming, climate historians hunting for past temperature extremes have unearthed what the United Nations weather agency calls a new record low in the Northern Hemisphere — nearly - 70 degrees Celsius (- 93 F) was recorded almost three decades ago in Greenland.

The World Meteorological Organisations ( WMO) publicly confirmed Wednesday the alltime cold reading for the hemisphere: - 69.6 Celsius recorded on December 22, 1991 at an automatic weather station in a remote site called Klinck, not far from the highest point on the Greenland Ice Sheet. “In the era of climate change, much attention focuses on new heat records," said WMO Secretary-General Professor Petteri Taalas in a statement.

"This newly recognised cold record is an important reminder about the stark contrasts that exist on this planet.” The temperature tally surpasses the - 67.8° C recorded twice at Siberian sites of Oimekon in 1933 and Verkhoyanksk in 1892. The latter Russian site made headlines in recent months for recording what may be a new record- high temperature north of the Arctic Circle during a heatwave in the region. The new low was confirmed by so- called “climate detectives” working with the WMO’s Archive of Weather and Climate Extremes in Geneva. The agency, which was created in 2007, has been poring over historic data in search of records like high and low temperatures, greatest rainfall, and even of “heaviest hailstone" and “longest lightning flash.”

It said that the record came to light after “a WMO blue- ribbon international panel of polar scientists tracked down the original scientists involved” from the Klinck automatic weather station than ran for two years in the early 1990.

The coldest temperature ever recorded on Earth was the - 89.2 Celsius (128.6 F) recorded in 1983 at the high- altitude Vostok weather station in Antarctica, WMO said.

Petteri Taalas, the secretary general of the WMO, said: “In the era of climate change, much attention focuses on new heat records. This newly recognised cold record is an important reminder about the stark contrasts that exist on this planet.”

Searching through the archives allows scientists to check temperature patterns, and provides valuable data for climate models. The Klinck station operated for two years in the early 1990s, before its automated instruments were sent for use in the Antarctic. It came to light only after a WMO group tracked down the original scientists. The data had to go through rigorous checking before the new record was accepted. Their assessment is published in the Quarterly Journal of the Royal Meteorological Society.