Sentences with phrase «difficult by ice»

Each occasion made difficult by ice / snow / wind.

Not exact matches

By using theoretical simulations, the researchers were able to model states of superionic ice that would be difficult to study experimentally.

One of the Science co-authors, Peter Huybers, a climate scientist at Harvard University, says he was pleased by the confirmation — especially because it comes from a fast - spreading center, where the ice age signal is more difficult to observe.

It is difficult to obtain fossil data from the 10 % of Earth's terrestrial surface that is covered by thick glaciers and ice sheets, and hence, knowledge of the paleoenvironments of these regions has remained limited.

Climate change models predict that the Arctic sea ice will continue to shrink in a warming world (as much as 40 % of the ice is expected to be gone by midcentury), and the resulting changes — including later formation of ice in the autumn, rain falling on the snow, and decreasing snow depths — will make it increasingly difficult for the seals to construct their snow caves, NOAA says.

Rather the cores require a more complicated analysis that is becoming more difficult by the day as the ice melts.

Solar forcing has been suggested for the Mayans and for the Little Ice Age, but hard evidence is difficult to come by.

It remains difficult to assess how soon a collapse of Pine Island Glacier could occur, but a new paper by Bamber and Aspinall (2013) suggest that there is a growing view that the West Antarctic Ice Sheet could become unstable over the next 100 years16.

Based on the candid and sometimes startling conversations that YOU were never meant to hear, THE TONYA TAPES, written by award - winning author Lynda D. Prouse, chronicles the life of the world's most infamous female athlete — TONYA HARDING — revealing for the first time the whole truth of her difficult and amazing life on and off the ice.

Today's feature flick has a GT - R hitting 183 mph, but Nissan made things more difficult by doing the entire test on ice.

It is difficult for many people (including some geologists) to visualize how sea level could drop that much just by expanding the ice caps.

It is difficult to see how a person in the general public should not be concerned by the downward trend of Arctic sea ice volume.

This can become difficult since the ice chronologies can only be checked by finding and definitively identifying tephra (volcanic glass shards) that can be attributed to these key eruptions; sulphate peaks in the ice are not volcano specific.

They plan to drill short ice core samples and analyze the past role of black carbon, including layers from 2012 (though Doherty points out that it may be difficult to tell how much black carbon was deposited then, rather than deposited in earlier years and concentrated by the melting).

What I find difficult with the «other» paper that it is again an a-posteriors explanation (like cold European winters caused by less Arctic sea ice in the preceding fall) and just one.

It would be rather difficult to see increasing sea ice from the AMO and achieve an ice free Arctic ocean by 2050.

Modern day data on what is happening beneath the ice sheets is difficult to come by.

Mark Serreze, the director of the NSIDC, said that making a clear separation between manmade and natural factors is «very difficult,» since as the sea ice thins, it become more vulnerable to melting spurred by weather patterns.

Thin ice makes it more difficult to rely on conventional wisdom, although this year has proven that a lack of melting momentum during May and June followed by weather conditions during July and August that do not favour melt / export / compaction can still prevent a record, even if volume was at a record low for much of the year.

However, detecting acceleration is difficult because of (i) interannual variability in GMSL largely driven by changes in terrestrial water storage (TWS)(7 ⇓ — 9), (ii) decadal variability in TWS (10), thermosteric sea level, and ice sheet mass loss (11) that might masquerade as a long - term acceleration over a 25 - y record, (iii) episodic variability driven by large volcanic eruptions (12), and (iv) errors in the altimeter data, in particular, potential drifts in the instruments over time (13).

Reports by Joe Leavitt, a Barrow ice expert, indicate that the prevailing winds have been pushing ice offshore, making access to sea ice for hunting difficult along the Chukchi coast.