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AIRS tracks record-breaking heat wave in Pacific Northwest

Written by  Sunday, 11 July 2021 10:39
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Pasadena CA (JPL) Jul 12, 2021
An unprecedented heat wave that started around June 26 smashed numerous all-time temperature records in the Pacific Northwest and western Canada. NASA's Atmospheric Infrared Sounder (AIRS), aboard the Aqua satellite, captured the progression of this slow-moving heat dome across the region from June 21 to 30. An animation of some of the AIRS data show surface air temperature anomalies - values ab

An unprecedented heat wave that started around June 26 smashed numerous all-time temperature records in the Pacific Northwest and western Canada. NASA's Atmospheric Infrared Sounder (AIRS), aboard the Aqua satellite, captured the progression of this slow-moving heat dome across the region from June 21 to 30. An animation of some of the AIRS data show surface air temperature anomalies - values above or below long-term averages. Surface air temperature is something that people directly feel when they are outside.

In many cases, the highs exceeded previous temperature records by several degrees or more. On June 28, Quillayute, Washington, set an all-time high temperature record of 110 degrees Fahrenheit (43 degrees Celsius), shattering the old record of 99 degrees Fahrenheit (37 degrees Celsius).

Numerous weather stations broke records on consecutive days, showing the unprecedented nature of this extreme heat, which is also being blamed for a number of fatalities. In British Columbia, the village of Lytton set a new all-time record for Canada at 119 degrees Fahrenheit (48 degrees Celsius) on June 29, only to break it the next day with a reading of 121 degrees Fahrenheit (49 degrees Celsius).

The AIRS instrument recorded similar temperature anomalies at an altitude of about 10,000 feet (3,000 meters), showing that the extreme heat also affected mountainous regions. And temperature anomalies at roughly 18,000 feet (5,500 meters) demonstrated that the heat dome extended high into Earth's troposphere, creating the conditions for intense heat at the planet's surface that are normally found farther south.

AIRS, in conjunction with the Advanced Microwave Sounding Unit (AMSU), senses emitted infrared and microwave radiation from Earth to provide a three-dimensional look at the planet's weather and climate. Working in tandem, the two instruments make simultaneous observations down to Earth's surface.

With more than 2,000 channels sensing different regions of the atmosphere, the system creates a global, three-dimensional map of atmospheric temperature and humidity, cloud amounts and heights, greenhouse gas concentrations and many other atmospheric phenomena. Launched into Earth orbit in 2002 aboard NASA's Aqua spacecraft, the AIRS and AMSU instruments are managed by NASA's Jet Propulsion Laboratory in Southern California, under contract to NASA. JPL is a division of Caltech.


Related Links
Climate at NASA
AIRS
Weather News at TerraDaily.com

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WEATHER REPORT
N. America heat wave 'virtually impossible' without climate change: study
Washington (AFP) July 7, 2021
A record-breaking heat wave that hit the western United States and Canada at the end of June would have been "virtually impossible" without human-caused climate change, according to an analysis by a group of leading climate scientists. The World Weather Attribution group said that global warming, caused by greenhouse gas emissions, made the heat wave at least 150 times more likely to happen. Pacific Northwest areas of the two countries saw temperatures that broke records by several degrees, incl ... read more


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