Sentences with word «airmass»

Perhaps those crop destructive extremely cold Arctic airmass blasts destroying oranges in Florida come from the State of Minnessota?

This system would be fairly unremarkable, bringing only light to moderate precipitation, if not for the very cold airmass in which it will be situated.

My thought is that the UK's temperate climate is primarily due to SWly prevailing winds blowing from the relatively warm ocean, as opposed to places on the eastern side of a large continent which will frequently receive cold polar continental airmasses in winter, because the mid-latitude westerlies will be blowing from a cold continental interior.

The very prolonged nature of the heat, combined with the presence of an unusually humid airmass over Northern California, made the human impact of the heat even worse — and also led to consecutive «hot day» and record warm overnight temperature records being set in a number of locations.

The system will be moving into a very dry continental polar airmass over California when it makes its approach on the Central Valley, and dewpoint depressions will be very steep.

(As it is an irrational and partial open system process, the only limits are governed by airmass content and direction (phase).)

Transitions seasons (autumn and spring) in tend to be highly volatile throughout the Earth's middle latitudes as cold, dry polar and warm, moist tropical airmasses interact with high frequency.

Polar airmasses then spill southward into mid-latitudes, first in the stratosphere and also later in the troposphere6, 15.

The remarkably cold modified Arctic airmass that has brought bitterly cold air to much of North America has now shifted eastward, and the West Coast is in the midst of a slow but substantial warming trend that will continue at least through the coming weekend.

Unfortunately, there is actually quite good model agreement on the overall pattern over the East Pacific through the end of the month: the huge ridge over the Eastern Pacific is expected to persist and perhaps grow even more, continuing the extraordinarily dry pattern over California but allowing for occasionally large swings in temperature as a very cold airmass over Canada is occasionally able to spill westward in weak or even slightly retrogressive (east to west) zonal flow.

It feels like winter out there this week thanks to a fresh Arctic airmass.

Not only will this occur via general global warming but also because enhanced Arctic warming will make any future southward excursions of Arctic airmasses warmer on average, reducing the contrast between them and mid-latitude airmasses.

However, by the middle of the month, the cold air had given way to a much warmer airmass.

By several meteorological measures, the airmass associated with this storm is pretty extraordinary: the amount of atmospheric water vapor (precipitable water) expected to be present near San Francisco on Saturday morning may be close to the all - time record value for any time of year.

This airmass is also expected to be incredibly warm for a California precipitation event; freezing levels could be as high as 10,000 feet or even higher during the initial part of the storm, with rain (instead of snow) expected at even very high mountain locations.

Overall, this airmass appears to be as dry as one might expect for a cold continental source region, though it's possible that very weak disturbances in the flow could being a few snow showers to unusual locations along the West Coast next weekend.

As the entire pattern shifts slightly westward (retrogresses) this week, this modified Arctic airmass will be able to spill southward and even slightly westward over the West Coast and intermountain states.

By Thursday, an exceptionally cold airmass will be in place across nearly the entire Western United States.

This allows Arctic airmasses to expand farther south while increasing the likelihood of heavy snowfalls.