January 29, 2022 - Snow, Fog, and Sediment in British Columbia
Follow @NASA_MODIS
British Columbia
Tweet
Share
On January 27, 2022, the Moderate Resolution Imaging Spectroradiometer
(MODIS) on board NASA’s Aqua satellite acquired a true-color image of
snow, sediment, and fog in British Columbia, Canada. The Northern
Pacific Ocean sits in the southeast (lower left) in this image while
the snow-topped Coast Mountains visible inland. In the south, a large
bank of fog sits over the state of Washington, U.S.A., and large
fingers of that fog extend northward into the mountain valleys of
British Columbia. Another substantial fog bank sits over the Strait of
Georgia and Salish Sea, between Vancouver Island and the mainland.
Mud-colored sediment fills the Fraser River and pours into the Strait
of Georgia.
Fog is simply a cloud lying close to the ground. Like all clouds, it
forms when the air reaches its dew point, which is the temperature to
which an air mass must be cooled for the water vapor in it to condense
into liquid droplets.
Valley fog is common in British Columbia and the Pacific Northwest. On
clear winter nights, the ground and overlying air cool off rapidly,
especially at high elevations. Cold air is denser than warm air, and it
sinks down into the valleys. The moist air in the valleys gets chilled
to its dew point, and fog forms. If undisturbed by winds, such fog may
persist for days.
Image Facts
Satellite: Aqua
Date Acquired: 1/27/2022
Resolutions: 1km (2 MB), 500m (6 MB), 250m (4.9 MB)
Bands Used: 1,4,3
Image Credit: MODIS Land Rapid Response Team, NASA GSFC
https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2022-01-29
--- up 7 weeks, 6 days, 20 hours, 43 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (1:317/3)