What is the News? The National Oceanic and Atmospheric Administration (NOAA) has declared that La Niña has re-developed. What is Double Dip La Nina? La Nina is one part of the El Nino Southern Oscillation (ENSO) cycle. But when two La Ninas happen one after the other (with a transition through ENSO neutral conditions in… Continue reading ‘Double-dip’: La Nina has formed for second year in a row, says NOAA
Tag: changes in critical geographical features
Arctic melt: will polar bears vanish by 2100?
What is the News? According to a study published in the journal Earth’s Future, if carbon emissions continue at current levels, then by 2100 Arctic sea ice may disappear during the summer, which could drive polar bears and other ice-dependent species to extinction. What is the importance of Arctic Ice? In winter, most of the… Continue reading Arctic melt: will polar bears vanish by 2100?
Why did the Antarctic Larsen C ice shelf break in 2017? NASA has an answer
What is the News? According to a study, the A68 iceberg that split off from Antarctica’s Larsen C ice shelf in 2017 was likely caused due to ice-shelf dynamics and not climate change. What is the issue? Ice shelves are massive stretches of ice that build up over many thousands of years. Global warming contributes… Continue reading Why did the Antarctic Larsen C ice shelf break in 2017? NASA has an answer
Heatwave occurrences increasing in India, occurring in new regions: study
What is the news? A recent analysis by the Banaras Hindu University (BHU), in collaboration with the Department of Science and Technology(DST) and the Ministry of Earth Sciences(MoES), has found a spatial shift of heatwaves in India. With this shift weather events are now occurring in new regions in the country. About the study The study has looked at… Continue reading Heatwave occurrences increasing in India, occurring in new regions: study
The Atlantic Nino effects
Synopsis: Monsoon predictions are a monumental challenge, especially when it comes to the spatial distribution and the northward migration of the monsoon trough. Introduction Recently, farmers from Madhya Pradesh threatened to take IMD to court for the inaccurate monsoon forecast this year. A question was also raised in Parliament about whether the Arctic warming had… Continue reading The Atlantic Nino effects
High water: on growing challenge from tropical cyclones
Synopsis: Tropical cyclones laden with moisture and accumulated energy pose a growing challenge, as they have the propensity to inflict heavy damage to lives and property. The welcome concern for public health and economic security must lead to stronger institutional responses to natural disasters too. Why cyclonic storms over northern Indian Ocean have a severe… Continue reading High water: on growing challenge from tropical cyclones
Arctic ice is disappearing: How clouds interact with sea ice change
What is the news? The Earth is warming — some parts more rapidly than others. Temperatures in the Arctic, for example, have been rising much faster than the rest of the planet. Experts, for the longest time, have attributed the crisis to how clouds interact with sea ice, essentially frozen seawater. Decades of research have pointed… Continue reading Arctic ice is disappearing: How clouds interact with sea ice change
Sea level rose 3.1 mm each year between 1993 and 2020: Report
What is the news? Recently, Copernicus Marine Environmental Monitoring Service published a report “The Ocean State Report 5”. As per the report the global ocean covers 71% of the Earth’s surface and regulates the Earth’s climate and sustains life. Currently, global ocean is undergoing severe changes from natural variations, over-exploitation and anthropogenic influences. These changes caused the sea level… Continue reading Sea level rose 3.1 mm each year between 1993 and 2020: Report
Sea level rise is certain
Source: This post is based on the article “Sea level rise is certain” published in The Hindu on 23rd Sep 2021. What is the news? Recently, Intergovernmental Panel on Climate Change (IPCC) published a report, ‘Climate Change 2021: The Physical Science Basis’. This report provides scientific reviews on the science and impacts of climate change. It also discusses… Continue reading Sea level rise is certain
Explained: Can thawing permafrost cause another pandemic?
What is the News? The recent IPCC report has warned that increasing global warming will result in reductions in Arctic permafrost. This will result in releasing of greenhouse gases like methane and carbon dioxide. What is Permafrost? Permafrost is any ground that remains completely frozen—32 °F (0 °C) or colder—for at least two years straight. … Continue reading Explained: Can thawing permafrost cause another pandemic?
Explained: What will happen to fish as oceans warm?
Source: Indian Express What is the news? The rise in oceanic temperature due to global warming is affecting the aerobic capacity of the fish and could impair their physiological performance in the future. Context The latest Intergovernmental Panel on Climate Change (IPCC) report has warned that ocean warming will continue over the 21st century and… Continue reading Explained: What will happen to fish as oceans warm?
Why the Atlantic Ocean current system is slowing down, and its implications
Source: Indian Express What is the News? According to a study, Atlantic Meridional Overturning Circulation (AMOC) is losing its stability and is very likely that AMOC will decline over the 21st century. What is Atlantic Meridional Overturning Circulation(AMOC)? Source: Wikipedia AMOC is a large system of ocean currents. It is the Atlantic branch of the… Continue reading Why the Atlantic Ocean current system is slowing down, and its implications
