Sentences with phrase «pressure ridge»
A "pressure ridge" is a term often used in relation to ice formations. It refers to a ridge or a raised area that is created when two ice plates or floes push against each other, causing the ice to pile up. It forms due to the pressure exerted by these moving ice masses and can be dangerous for ships or other objects navigating through icy waters. Full definition
In short, it appears that humans are contributing to the strength of high pressure ridges off California's coast, which will tend to reduce the amount of precipitation in the state.
theguardian.com
A high pressure ridge sitting of California's coast for several years (known as the «Ridiculously Resilient Ridge» for its persistence) has been a primary factor contributing to the low levels of precipitation.
Eventually, a high - pressure ridge moved from the North Atlantic into the United States, shutting down rainfall and setting the stage for a heat wave to emerge.
One more step: The unprecedented early snowmelt in the north is an extra source of heat, which helps enhance a high pressure ridge aloft.
Northwest Greenland's summer of melt started in June 2015, when a high - pressure ridge squeezed off from the jet stream, the study shows.
There is a huge High pressure ridge stuck over the western region of the US for a week and looks to last for another week and a half giving record high temps or at least in Phoenix, AZ..
The high pressure ridge kept Harvey over Texas longer than it otherwise would have, concentrating rainfall over a smaller area.
«Normal» low pressure systems meeting a high pressure ridge simply stall out and remain in that area either until they dissipate or the high pressures moves!!!! What a hoot!
This change in the high - pressure ridge varies moisture transport from the ocean to the North American continent and then causes drought / pluvial conditions in the southwestern part of North America.
In 2014, Web Camera # 1 stopped transmitting images on June 27 and # 2 stopped on July 1, almost certainly eaten by pressure ridges.
There it subsides and strengthens the high pressure ridges beneath.
Harvey's rainfall was only able to break records because it stalled over Texas, blocked by a high pressure ridge in the west.
«At first, tropical ocean temperature contrast between Pacific and Atlantic causes slow climate variability due to its large thermodynamical inertia, and then affects the atmospheric high - pressure ridge off the California coast via global teleconnections.
Temperatures in California are up again in mid-July, as a high - pressure ridge sits over the West and brings in dry conditions, the counterpart to a trough that has dipped down and brought cooler weather to the East once again.
One such blocking pattern, a high pressure ridge over Greenland, shaped Sandy's turn toward the East Coast.
The lack of major storms from the western / northern sector resulted in a shorefast ice cover that is potentially unstable due to the lack of grounded pressure ridges.
When the Pacific Ocean is warm off the west coast of North America, as it is now, it strengthens a high - pressure ridge of air on the west coast.
Weather models have been very consistent that Irma will take a sharp turn toward the north - northwest during the weekend, working its way around the west end of the high - pressure ridge that has been steering Irma all week, Masters said.
«Some recent studies suggest that a high pressure ridge that caused warmer temperatures over land also created the blob, but our results suggest that the blob itself may also have contributed to the warm winter here,» Mote said.
High - pressure ridge blocks rain According to Mark Svoboda, a climatologist with the National Drought Mitigation Center, the dry conditions currently exacerbating the situation have their origins with the infamous high - pressure ridge that blocked precipitation from reaching California this winter, resulting in the current record - breaking drought.
In years of strong NAOs, most major hurricanes curved along the southern margin of the high - pressure ridge and then turned north to plow into the East Coast.
Even though the NWS predicts the high - pressure ridge will begin to break up by the weekend, temperatures will remain above normal, with no relief from the summer monsoon in Nevada or Arizona, the agency said.
The rains fell in part because the jet stream struggled to migrate northward as it usually does at this time of year, allowing low - pressure systems to wash across the U.S., in place of the high - pressure ridges that typically settle in and send temperatures rising.
Hoerling said the study did not prove that the high - pressure ridge was exceptional when compared with pressure increases taking place across the globe as the planet warms.
A second study, led by Hailan Wang of NASA's Goddard Space Flight Center, used different model simulations and came to a similar conclusion: While a warming sea surface did make it more likely that a high - pressure ridge could form, the signal was not strong enough to explain its extreme nature.
Secondly, the slow variation in this high - pressure ridge is enhanced by filtering out the atmospheric noise through land soil processes.
Instead of a trough off the northeastern United States, we had this high - pressure ridge, and that kept the westerly winds far north of the tropical Atlantic storms.
November has already been off to a relatively toasty start, thanks to a high pressure ridge that sent temperatures soaring up to 20 °F (11 °C) above normal in the central and southern parts of the country from Halloween through the first few days of the month.
They mapped the ice front, grounding zone, longitudinal surface structures (flow stripes), pressure ridges, crevasses, fractures and rifts, surface meltwater, ice dolines, ice rises and ice rumples.
The big question, he added, is what the predicted El Niño - driven storms will do to the high - pressure ridge that has resulted in dry winters and worsened California's already - dire drought.
What appear to be mountains on the horizon are the raised chunks of sea ice comprising the pressure ridge about 200 - m away bounding our ice floe.
This mass of warm water, nicknamed «the Blob,» was the result of a persistent atmospheric high - pressure ridge in the Northeastern Pacific that decreased cooling and transport of surface water.
For more than a year now, a giant blob of unusually mild waters has set up shop in the northeast Pacific and Gulf of Alaska, with an area of high pressure — or a «high pressure ridge» — forming above it.
Specifically, it seems to historically coincide with a high pressure ridge over the West and a trough over the East.
This high pressure ridge, represents is created by the Hadley Circulation.
This year, the high - pressure ridge was positioned a little differently and didn't end up blocking storms from hitting the entire coast.
Simultaneously, Moscow was under a high - pressure ridge, experiencing a powerful 35 - day heat wave.
Another paper published this year by Simon Wang and colleagues similarly concluded that human - caused global warming is changing conditions in the Pacific Ocean that make these high - pressure ridges off the coast stronger, thus intensifying droughts in California.
A study led by Noah Diffenbaugh at Stanford used modeling and statistics to find that these sorts of persistent high - pressure ridges are more likely to sit off California's coast in the presence of high levels of greenhouse gases in the atmosphere.
It encountered a high pressure ridge and TURNED AROUND AND HEADED BACK TO THE PACIFIC!!!!!!!!!!! I am not kidding you.