Climate Change # Environment

How earth’s albedo effects global warming: can geoengineering help?

Definition Albedo is the measure of reflectivity of an object. A scientific definition describes albedo as “the fraction of the total incident solar radiation reflected by a planet back to space that is a measure of the planet's energy balance”. Every object has a different albedo. The objects with higher albedo are cooler in temperature than the objects that have a lower albedo.  It is either measured on a scale of zero to one or as a percentage. An object that has zero albedo reflects zero...

Climate Change

Foraminifera Fossils Indicate Sea Level Change in Lothal

Foraminifera are sea organisms which have been widely used in palaeoceanography. The organisms indicate sea level changes and have played a significant role in identifying the oldest dockyard at Lothal in Gujarat.

Climate Change

Geopolitics of the Poles in the Anthropocene Age

We need to realise that climate change under the Anthropocene, the present era of human civilization, may have long ranging impacts on the two Polar regions and therefore make some essential policy changes accordingly.

Climate Change

Climate Change and the Glacial Realms

The cryosphere acts as sensitive thermometers recording the fluctuations in the climate. The Antarctic, the Arctic and the Himalaya are all showing signs of increasing ice mass loss on a decadal scale as a consequence of average rise of 0.8 oC in global temperatures since 1880 (IPCC, 2013). The meteorological observatories in the Arctic, the Antarctic and Tibet—demonstrate a rise in temperature over the last three decades.

Ecology

Biodiversity in India

The United Nations’ (UN) Convention on Biological Diversity (CBD) defines biodiversity or ‘biological diversity’ as “the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species and of ecosystems” (UN, 2018). Dr. C. R. Babu, a senior Environmental Scientist at Delhi University, defines biodiversity as, “All...

Ecology

Biodiversity as Conservation | Threats & Conservation Efforts

Thomas Lovejoy in 1980 coined the term ‘Biological Diversity’ which was later modified by E. O. Wilson in 1986 who coined the term ‘Biodiversity’ in his report for the first American Forum on Biological Diversity. As a term intimately related to environmental and wildlife conservation, although the popularity of the term has increased dramatically since then in the West, especially in the scientific community in the West as well as globally, biodiversity as conservation is still not an everyday...

Desertification

Very Severe Cyclonic Storm OCKHI

A trough of low at mean sea level lay over southwest Bay of Bengal & adjoining Sri Lanka coast on 27th November, it was seen as a low pressure area over southwest Bay of Bengal and adjoining areas of southern Sri Lanka & equatorial Indian Ocean on 28th, as a well marked low pressure area over southwest Bay of Bengal and adjoining equatorial Indian Ocean and Sri Lanka at 0530 hours IST of 29th November and concentrated into a depression over southwest Bay of Bengal off the Sri Lankan coast....

Environment

Climate Change in the Southern Ocean

Although Antarctica is better protected by international legislations, the Arctic usually commands most of the attention among climate watchers, especially in the case of the melting of sea ice and its subsequent impacts. However, like the Arctic Ocean, Climate Change in the Southern Ocean also deserves the attention of climate watchers. The Importance of the Southern Ocean Climate Change in the Southern Ocean is incredibly relevant, given that greater than 60 per cent of the Earth’s anthropogenic...

Environment

Climate Change in the Svalbard Archipelago in Norway

The Arctic region is experiencing the effects on Climate Change more than most regions on Earth and as such, Climate Change in Svalbard, which lies in the Arctic region deserves special attention. The Svalbard archipelago is located in the Arctic Ocean, about halfway between Norway and the North Pole, and is under the jurisdiction of the Norwegian Government. Fig: Norway in Northern Europe including the Svalbard Archipelago Source: Maps Of World, 2017 Climatic Conditions in Svalbard The...

Water

Global Warming and Impacts of Glacial Meltdowns on Indian Rivers

Other the polar regions, the Himalayas follow as the largest deposit of frozen water in the world, especially in the case of Himalayan glaciers. Himalayan glaciers make up about 17 per cent of the Himalayas and about 37 per cent of the Karakoram Range. The water melted from Himalayan glaciers form the headwaters for many major river catchments in the Indian subcontinent. This discharge of headwater makes up for about 70 to 80 per cent of the melting of snow and ice from the highlands. In such a scenario,...