DAILY CURRENT AFFAIRS IAS | UPSC Prelims and Mains Exam – 24th April 2024
Archives (PRELIMS & MAINS Focus) Sea Level Rise Syllabus Prelims & Mains – Environment Context: A quarter of the coastal land of China will sink below sea level within a century, putting hundreds of millions of people at risk of being flooded, due to land subsidence and climate change, according to a new study, published in the journal Science on Friday (April 19). Background:- The land subsidence in China is primarily a result of rapid urbanisation — activities such as excessive groundwater extraction and the weight of buildings lead to subsidence. The situation has been exacerbated by climate change, which is resulting in the rise of sea levels. Sea level rise isn’t just limited to China. It is a global issue that is projected to affect between 130 million to half a billion people depending on different temperature scenarios in the long run, according to a UN report. How fast is the global sea level rising? The global sea level has risen by about 8–9 inches or 21–24 centimetres since 1880, according to a report by the National Oceanic and Atmospheric Administration (NOAA). The more worrying sign is that since 1993, the rate of increase has been accelerating. It has more than doubled from 0.07 inches or 0.18 centimetres per year in 1993 to the current rate of 0.17 inches or 0.42 centimetres per year. Global average sea level rose by about 0.3 inches or 0.76 centimetres from 2022 to 2023. Experts said there was a huge jump in global sea level between the two years mainly due to the development of El Niño, a weather pattern associated with warmer oceans, in June 2023. Now that El Niño is weakening, the rate of sea level rise is expected to slow down. How climate change is leading to sea level rise? The key driver behind rising sea levels is global warming. As temperatures across the world continue to soar, more and more glaciers and ice sheets are melting and adding water to the ocean. Global warming is also making the ocean warmer, which is leading to something called thermal expansion — when water becomes warmer, it expands in volume. This is contributing to sea level rise as well. Why does sea level rise matter? The most visible consequence of sea level rise will be the flooding of coastal areas. Take the example of coastal cities in India. A 2022 analysis by RMSI, a global risk management firm, found that some critical properties and road networks in Mumbai, Kochi, Mangalore, Chennai, Visakhapatnam, and Thiruvananthapuram will be submerged by 2050. Things are worse for island countries like Indonesia. In 2019, Indonesia announced that the country’s capital would be relocated from Jakarta, which is prone to flooding, to the province of East Kalimantan on the island of Borneo. The rise of sea level also leads to more intense storm surges — the rise in seawater level caused solely by a storm — flooding, and damage to coastal areas. That’s because higher sea level can allow more water inland during hurricane-related storm surges. With sea level rise, saltwater contaminates freshwater aquifers, many of which are used by communities for agricultural and drinking purposes. Source: Indian Express Earth Day Syllabus Prelims – Environment Context: Every year, April 22 is observed as Earth Day, an international event celebrated around the world to pledge support for environmental protection. Background: The year 2024 marks the 54th anniversary of the annual celebrations. About Earth DAY : Earth Day was first observed in 1970 when 20 million took to the streets to protest against environmental degradation. The event was triggered by the 1969 Santa Barbara oil spill and other issues such as smog and polluted rivers. For over the next half century, Earth Day continued to play an important role in environmental activism. The landmark Paris Agreement, which brings almost 200 countries together to set a common target to reduce global greenhouse emissions, was signed on Earth Day 2016. In 2009, the United Nations designated Earth Day as International Mother Earth Day. According to earthday.org,Earth Day aims to “build the world’s largest environmental movement to drive transformative change for people and the planet.” The movement’s mission is “to diversify, educate and activate the environmental movement worldwide.” Earth Day is celebrated to remind each of us that the Earth and its ecosystems provide us with life and sustenance. This day also recognises a collective responsibility, as called for in the 1992 Rio Declaration, to promote harmony with nature and the Earth to achieve a just balance among the economic, social and environmental needs of present and future generations of humanity. This year, the theme is ‘Planet vs. Plastics’. The theme highlights the threat plastics pose to the planet and human health. It calls for an end to all plastic waste by demanding a 60% reduction in the production of plastics by the year 2040. Source: Indian Express Iran- Israel Conflict Syllabus Prelims & Mains – International Event Context: Iran launched a significant attack on Israel, deploying over 300 projectiles, including approximately 170 drones, cruise missiles, and over 120 ballistic missiles. Background: Tit-for-tat confrontation between Israel and Iran has sparked concerns about escalation dragging the Middle East into all-out war. What led Iran to attack Israel? In 2018, Israel hails US withdrawal from Iran’s nuclear deal with world powers after years of lobbying against the agreement, calling Trump’s decision “a historic move”. In 2020, Israel welcomed the assassination of General Qassem Soleimani, commander of the overseas arm of Iran’s Revolutionary Guards, in an American drone strike in Baghdad. Iran strikes back with missile attacks on Iraqi bases housing American troops. In October 2023, Hamas (the Iran-backed terrorist group) launched a missile attack targeting Israel. In response, Israel conducted airstrikes on Gaza. In November 2023, Israel started conducting raids and attacking medical facilities as Hamas was reportedly operating from these hospital buildings and carrying out their warfare. In November 2023, The Iran-backed Houthi group, based in Yemen, landed their helicopter on the Galaxy Leader cargo vessel as it was passing
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