Sentences with phrase «on sea ice»

Global warming has caused big problems for polar bears, which depend on sea ice for access to the ocean so they can hunt seals and other prey.

The bears, which can grow to about 8 feet (2.5 meters) long, depend on sea ice for their survival.

We know pretty well when the 1999 eruption took place; it will be easy to check for effects on the sea ice.

Some skill in predictability is possible based on the sea ice thickness distribution in spring.

What's more, collection of better data on sea ice over recent years has strengthened the models, making their predictions even more reliable — and disturbing.

Ice thickness was made an issue to add to the focus on sea ice melting.

There are often discrepancies between information from these centers and our data because they employ additional data sources to capture as much detail on sea ice conditions as possible.

A collaborative network of scientists and stakeholders to advance research on sea ice prediction and communicate sea ice knowledge and tools.

Usually this is done in the spring with aircraft landing on the sea ice.

The station has a harbor, landing strips on the sea ice and shelf ice, and a helicopter pad.

I've even posted video of singing on sea ice.

He was a caring person — well versed in operating on sea ice.

Changes in the amount and type of snow deposition on the sea ice is another potential factor.

Though the first one seems like a loose proxy for snow cover on sea ice, it does affect the total heat budget.

These particular images on the sea ice are actually painted on a prepared surface and then attached to the ice.

They depend on sea ice to hide them from predators like killer whales.

One related development is a proposal, mentioned in the article, from a group of scientists focused on sea ice and polar bears.

This is based on a sea ice - ocean model ensemble run.

It's a bet about as ill advised (to propose or accept) as the dicey behavior of this Russian worker when I spent time on the sea ice near the North Pole in 2003:

In the past (pre-1990s) this low would have just spread the ice pack out and increased sea ice extent, but with how thin the ice is, this just allows heat to melt the scattered ice from all sides and have a bigger impact on sea ice extent.

Polar bears are dependent on sea ice as a platform for hunting seals, and as a pathway to coastal areas.

Polar bears rely on sea ice to get their primary meal: seals.

We deployed cameras on four polar bears on the sea ice in the Bering Sea.

Polar bears spend most of their lives on the sea ice in the Arctic Ocean.

Polar bears living on sea ice need to eat more than 12,000 calories per day, the team found, which translates to at least one adult ringed seal — or the equivalent of nearly 220 Big Macs — every 10 to 12 days.

The last several years I have written a post on sea ice around the time of the Arctic sea ice minima

I mean consider how this species, a newcomer by evolutionary time scales, had become finely tuned to sustaining itself on seals hunted on sea ice, had been ravaged by uncontrolled hunting, had started recovering as such hunting was controlled, but now — along the warmest edges of its habitat — is in retreat as its main food supply is diminished at least partly by global warming from accumulating greenhouse gases.

Andrew Revkin filed stories and answered reader questions while camped on sea ice drifting near the North Pole in 2003.

In fact, some recent models show extra evaporation due to warming leading to snow falling on the sea ice around Antarctica.

«Although there have been previous airborne campaigns in the Arctic, no one has ever mapped the large - scale depth of melt ponds on sea ice using remote sensing data,» says Nathan Kurtz, IceBridge's project scientist and a sea ice researcher at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Scientists have decades of data documenting the bears, and Lentfer says that the bears» weights have been dropping over the past 25 years, indicating that they're having trouble hunting seals on sea ice.

The National Oceanic and Atmospheric Administration's Arctic Information page stockpiles both still images and animation loops of sea - ice imagery from four cameras sitting on the sea ice atop the 14,000 - foot - deep Arctic Ocean.

Thus, many lines of evidence suggest it is «more likely than not» that observations of bearded seals resting on sea ice platforms is only evidence of a convenience, not a survival requirement.

In more recent research, Schröder and others find that forecasts based on sea ice concentration and melt onset have similar to higher skill values compared to the melt pond model.

The little bird in this photo is a juvenile emperor penguin, discovered last winter on sea ice in Antarctica's western Ross Sea.

(I ran a preliminary version of the chart in a recent post on sea ice trends, but now it's been updated with the full month's readings of atmospheric pressures.)

Zhang, 5.1 (+ / - 0.6), Modeling The seasonal prediction focuses not only on the total Arctic sea ice extent, but also on sea ice thickness field and ice edge location.

Other effects of wind on sea ice either push the ice together, resulting in a smaller extent, or spread it out, resulting in larger expanses of sea ice at a lower density.

In order to make improved projections, scientists are fine - tuning their understanding of the many influences on sea ice trends, including both manmade global warming and natural climate variability.