Sentences with phrase «increased ablation»

The Whitechuck Glacier has simply not been happy with the 1.4 o F warming the North Cascade region has experienced since the 19th century, and its reduced income in the form of reduced accumulation, and increased expenditures in the form of increased ablation have led to a negative balance in its glacier ice savings account.

Increased ablation even in a single summer will cause thinning near the ice front.

The result of the failure to recapture meltwater as internal accumulation is increased ablation and negative annual balances (Kaser and Osmaston, 2002)

Glacier mass balance modelling indicates that to compensate for the increased ablation from a temperature rise of 1 °C a precipitation increase of 20 % (Oerlemans, 1981) or 35 % (Raper et al., 2000) would be required.

Still, there is no question that increased dust on snow increases ablation (mass loss)(though if the dust / dirt cover becomes thick enough, it actually winds up lowering ablation rates through insulation).

The main way that a moderate change in the air temperature or any other term increases ablation is by increasing the proportion of the day during which melting can occur.

Not exact matches

Researchers have attributed glacial decline to increasing temperatures, which have reduced the period of glacial accumulation and extended the period of summer ice melting (ablation).

Chris P. Jew, Chia - Shan Wu, Hao Sun, Jie Zhu, Jui - Yen Huang, Dinghui Yu, Nicholas J. Justice, Hui - Chen Lu (2013) «mGluR5 ablation in cortical glutamatergic neurons increases novelty - induced locomotion», PLoS ONE, 8: e70415.

Satyanarayana, A., Klarmann, K.D., Gavrilova, O. & Keller, J.R. Ablation of the transcriptional regulator Id1 enhances energy expenditure, increases insulin sensitivity, and protects against age and diet induced insulin resistance, and hepatosteatosis.

Detailed studies of the energy balance and ablation of the Zongo and Chacaltaya glaciers support the importance of air temperature increase, and identify the increase in downward infrared radiation as the main way that the effect of the warmer air is communicated to the glacier surface [Wagnon et al. 1999; Francou et al, 2003].

Therefore, if conditions allow the glacier surface to warm to 0 C, the amount of ablation that can be sustained by a given energy input increases dramatically.

Air temperature increases similar to those observed aloft since 1960, amplified by associated increases in humidity, account for a significant portion of the enhanced ablation leading to this strongly negative mass balance, but the exact proportion is highly uncertain because of the short span of energy and mass balance observations.

There is a threshold of glacier extent reduction dependent on the magnitude of ablation rate increase, where glacier runoff declines, the few examples suggest this is in the 10 - 20 % areal extent loss.

The accumulation area decreased by 24.8 %, while ablation area increased by 17.7 % with nearly 6 % increase in debris - cover surface in ablation zone in 1958 to 2011.

Recent research indicates it may be related to increasing friction at the base of the ice sheets slowing ablation and allowing greater thicknesses.

In the North Cascades the warmer temperatures have increased summer ablation on the glaciers (Pelto, 2006).

The advance increases the glaciers area at low elevation where ablation is highest, returning the glacier to equilibrium.

This is their sensitivity Achilles Heel: relatively little increases in melt can expand the ablation zone appreciably given the low surface slopes and low accumulation rates.

The warming could, under certain circumstances, increase the sublimation, but the effect of this on ablation is generally small, because of the high energy required for sublimation.