Antarctica Glaciers Climate Change

Most of the world’s glacier can be commonly found near the poles. Perhaps, glaciers exist around the surface of the world, even Africa itself. There are some places that does not have any glaciers which is Australia. It is considered as Oceania. It also includes some Pacific Island chain and some islands of Papua New Guinea and New Zealand, Davies (2014). The glaciers need a specific climatic condition, which mostly found at high snowfall region during winter and cool temperature during summer. The snow will accumulated during winter, to prevent the lost of snow during summer, it require a specific climatic condition. To ensure the glaciers to live longer, the amount of precipitation in the form of snowfall, freezing rain, or wind-drifted snow

The annual mean of the air temperature is about -9 ℃ isotherm has moved southwards, makes the result in ice-shelf collapse and glacier recession. Ice core provides a longer-period of perspective on climate over the past of four global cycles or longer. Methane and carbon dioxide atmospheric concentration are higher which recorded in ice core in the last 650 000 years. The ice cores also records that carbon dioxide and temperature is cross-linking with each other over the last 400 thousand years, which have strong connection between ‘greenhouse gases’ and temperature. According to Dyurgerov & Meier (2000), the rise in air temperature suggested by the temperature sensitivities of glaciers in cold regions is somewhat greater than the global average temperature rise derived largely from low altitude gauges, and the warming is

This is due to the thinning observed at glacier snouts. For information, global sea level are currently rising at rate about 3 mm per year, Davies (2014). Hence, the amount of higher sea level will not only depends on the glacier recession, temperature and warming of the ocean but also the dynamic behaviour of West Antartic Ice Sheet. It receives high snowfall and also contribute high tendency to melt, which receive more number of days above 0℃ during summer months. Due to high temperature and thinning glacier, it will become thin and easy to diminish which make more easier to float. The thicker the glacier, the more harder the cold flux to penetrate into lower zone, while heat flux from earth will remain unchanged. The thickness of the surge will decrease the temperature below 0℃, which makes the movement of glacier become much slower. Tropical glaciers will melting more rapidly as the climate warms, when the incident is happened, this will lead to decrease of water resources, global sea level will showing more inclined, and a valuable climate archive is