Modelling changes in glacier mass balance that may occur as a result of climate changes
Special issue : Methods of mass balance measurements and modeling
Bilan de masse ; Eau de fonte ; Glacier ; Modèle ; Monde ; Neige ; Précipitation ; Suède ; Température ; Variation climatique
Climatic variation ; Glacier ; Glacier mass balance ; Meltwater ; Model ; Precipitation ; Snow ; Sweden ; Temperature ; World
The simplest model involves linear regression of mass balance time series on temperature and precipitation data at stations close to the glacier but the AA. prefer the degree-day model. This model uses temperature and precipitation to calculate snow
accumulation, snow and ice melting, and possible refreezing of meltwater at regular altitude intervals on a glacier. The model has been applied to 37 glaciers in the world but the results are given for Storglaciären, northern Sweden, as an example.
A mass balance model that uses low-altitude meteorological observations and the area-altitude distribution of a glacier
Special issue : Methods of mass balance measurements and modeling
Altitude ; Bilan de masse ; Etats-Unis ; Glacier ; Glaciologie ; Limite d'enneigement ; Mesure de terrain ; Modèle ; Washington State
Altitude ; Glacier ; Glacier mass balance ; Glaciology ; Ground survey ; Model ; Snow line ; United States of America ; Washington State
A glacier mass balance model that requires only low-altitude precipitation and temperature observations and the glacier's area-altitude distribution is presented as an alternative to direct field measurements. Input to the model for South Cascade
Approaches to modelling the surface albedo of a high Arctic glacier
Special issue : Methods of mass balance measurements and modeling
Albédo ; Arctique ; Bilan de masse ; Bilan énergétique ; Canada ; Ellesmere ; Glacier ; Modèle ; Northwest Territories ; Variation diurne ; Zone froide
Albedo ; Arctic Region ; Canada ; Cold area ; Diurnal variation ; Ellesmere ; Energy balance ; Glacier ; Glacier mass balance ; Model ; Northwest Territories
Dans cet article l'A. tente de déterminer si la variation diurne de l'albédo de surface, à hautes latitudes, a des implications sur le bilan de masse des glaciers du haut Arctique. Il examine aussi 2 modèles d'albédo de surface, l'un résolvant les
variations diurnes d'albédo et l'autre non. Les résultats obtenus à partir de ces modèles sont comparés aux mesures effectuées sur le glacier John Evans.
Measurement and estimative models of glacier mass balance in China
Special issue : Methods of mass balance measurements and modeling
Bilan de masse ; Chine ; Glacier ; Glaciologie ; Mesure de terrain ; Modèle ; Montagne ; Mousson
China ; Glacier ; Glacier mass balance ; Glaciology ; Ground survey ; Model ; Monsoon ; Mountain
by net accumulation and net ablation during the year. The monitored glaciers are few compared with the large glacierized area in China. Some estimative models are thus introduced.
Special issue : Methods of mass balance measurements and modeling
Bilan de masse ; Calotte glaciaire ; Changement global ; Dynamique glaciaire ; Glaciologie ; Groenland ; Modèle ; Méthodologie ; Niveau marin ; Télédétection
Glacier dynamics ; Glacier mass balance ; Glaciology ; Global change ; Greenland ; Ice sheet ; Methodology ; Model ; Remote sensing ; Sea level
will be on airborne and satellite remote sensing methods. Remote sensing observations combined with ice sheet modelling seems an alternative way of obtaining long-term and short-term ice sheet contributions to sea-level change.
Special issue : Methods of mass balance measurements and modeling
model, systematic snow probing error and ablation gradient calculation on the mass balance of the glacier can be investigated. It is evident that the measure of total mass balance of Storglaciären is not sensitive to variations in these parameters
. Sparse data sets may not be appropriate for flow modelling or water balance calculations while they are well suited for climatic studies.