Temperature rise Current Affairs - 2020
According to a study, Parali I island, one of biodiversity-rich uninhabited islands part of Lakshadweep has disappeared due to coastal erosion and another four such islands in Lakshadweep sea are shrinking fast.
The researcher had conducted studies on assessment of biodiversity confining to five uninhabited islands– Parali I, II and III, Bangaram, Thinnakara in Lakshadweep, an archipelago of 36 islands in Lakshadweep sea.
The assessment related to geo-morphological changes associated with each island for period of 45 years was carried out using geospatial techniques such as Remote Sensing (RS) and Geographic Information System (GIS) to confirm the claim.
Parali I island, part of Bangaram atoll which was 0.032 square km in 1968 has been eroded to an extent of 100%, resulting in its inundation. Apart from Parali I, net erosion was higher in Parali II (80%), followed by Thinnakara (14.38%), Parali III (11.42%) and Bangaram (9.968%). The five islets of Bangaram atoll also have undergone coastal erosion.
The study has recommended of a bio protection strategy using mangroves, in addition to the conventional physical protection measures from coastal erosion.
The complete erosion and inundation of Parali I is pointing to gravity of issues associated with coastal erosion within atoll. It calls for urgent measures to be implemented on each islet of the atoll in Lakshadweep sea to check further erosion. Further, due to increasing global temperature because of climate change, islands and coastal areas are facing erosion and inundation due to rising sea levels. India’s coasts and islands, are densely populated, are highly vulnerable. There is urgent need to start preparing for building defenses to protect coastlines and islands as sea levels are predicted to rise further.
Tags: Climate Chnage • Coastal erosion • Environment • Lakshadweep • Parali I island
India Meteorological Department (IMD) has forecasted above normal temperature in most parts of the country during 2017 summer season. The predictions were given by Indian Institute of Tropical Meteorology in Pune.
The maximum temperatures in March to May 2017 are likely to be warmer by more than 1°C in north, northwest and parts of central India. In other parts, maximum temperature will be between 0.5 to 1°C more than the normal.
- Punjab, Haryana, Delhi, Uttar Pradesh, Bihar, Jharkhand, West Bengal, Gujarat, Madhya Pradesh, Chhattisgarh, Odisha and Telangana will see warmer temperatures along with hill states J&K and Himachal Pradesh.
- The warmer summer forecast is in line with a generally warmer trend over previous months as the year 2016 was the warmest year in a century.
- The forecast shows a 47% probability of summer temperatures being above normal. It also mentions that there will increase in the frequency and duration of heat waves across the country.
- Minimum temperature in the season will also be higher by over a degree celcius in northern plains along with northwest India.
- Peninsular, northeastern and west central parts of the country will also experience minimum temperatures higher by 0.5°C to 1°C than normal.
- The rise in temperature can be attributed to increasing trends in the greenhouse gases and the warming of the sea surface temperatures over the equatorial Indian and Pacific Oceans.
- El Nino Southern Oscillation (ENSO) is expected to be in a neutral condition during summer months, thus unlikely to influence the temperatures in India.
About India Meteorological Department (IMD)
- IMD also referred to as the Met Department is the principal agency responsible for meteorological observations, weather forecasting and seismology in India.
- It functions under the Union Ministry of Earth Sciences of the Government of India. It headquartered in New Delhi and operates hundreds of observation stations across India.