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The chilling requirement of a fruit is the minimum period of cold weather after which a fruit-bearing tree will blossom productively. It is often expressed in chill hours, which can be calculated in different ways, all of which essentially involve adding up the total amount of time in a winter spent at certain temperatures.
The formal definition was given in 1960 by a French botanist P. Chouard, as "the acquisition or acceleration of the ability to flower by a chilling treatment." [ 7 ] Lysenko's 1928 paper on vernalization and plant physiology drew wide attention due to its practical consequences for Russian agriculture.
In the United States an extreme cold warning was an experimental weather warning issued by the National Weather Service in North Dakota, South Dakota, and Minnesota. [5] The warning was issued if the temperature fell to −35 °F (−37 °C) or colder with a wind of less than 5 mph (8 km/h; 2 m/s). [6]
a wind chill warning remains in effect until noon cst tuesday. * this is a particularly dangerous situation! * wind chill values: 35 to 65 below...with the coldest readings tonight and monday morning. * impacts: exposed flesh will freeze in 10 minutes with wind chills of 35 below...and in 5 minutes with wind chills of 50 below or colder.
A cold weather advisory (formerly known as a wind chill advisory until October 2024) [1] is a hazardous weather statement issued by Weather Forecast Offices (WFO) of the National Weather Service (NWS) in the United States to alert the public that temperatures or wind chills are forecast to reach values low enough that it poses a threat to human health and life if adequate protection is not ...
Chill was the operative word for her look, given that the centerpiece was an icy-blue belted minidress that she paired with a matching long-sleeve blazer. The frosty set was layered under a long ...
The Australian formula includes the important factor of humidity and is somewhat more involved than the simpler North American wind chill model. The North American formula was designed to be applied at low temperatures (as low as −46 °C or −50 °F) when humidity levels are also low.
Ryan Hartman of the Minnesota Wild has been suspended 10 games for slamming an opponent’s head to the ice with his right arm on a faceoff. The NHL’s Department of Player Safety announced the ...