What is this report?
Earlier the Intergovernmental Panel on Climate Change (IPCC) had assessed impact of climate change on land-based ecosystems, it has now assessed the impact that climate change is having on the world’s oceans and frozen areas (known as the cryosphere). The report portrays very murky picture of ocean and frozen areas.
What is significance of ocean and cryosphere?
Almost three-quarters of Earth’s surface is covered by ocean, and another 10% is covered by ice sheets and glaciers. These ecosystems are critical to life on our planet, as they regulate the climate, feed the world’s growing population, serve as habitat for species, provide energy, are critical to cultures around the world, and allow for transport and trade, among other benefits. The impact that climate change is having on the ocean and cryosphere will affect all people on Earth, but especially those in the Arctic, low-lying coastal zones and high mountain regions.
What are findings of the report of IPCC on ocean and cryosphere?
This absorption of emissions and heat is causing massive impacts, such
What is in for Hindu Kush Himalayan (HKH) Region this report?
The term Hindu Kush Himalayan (HKH) region – which covers the high mountain chains of Central, South and Inner Asia that includes the Tien Shan, Kun Lun, Pamir, Hindu Kush, Karakoram, Himalayas, and Hengduan and the high-altitude Tibetan Plateau -- has one of the world's largest renewable supplies of freshwater. The Himalayan region has the largest reserve of water in the form of ice and snow outside the Polar Regions; this is why it is called the ‘third pole’.
Impact of climate change on HKH:
What would be impact of ocean warming and melting cryosphere?
As a result of impacts to the ocean and cryosphere, communities around the world will see their water resources disappear, experience floods and landslides, face changes in food supply, and witness the degradation of ecosystems, infrastructure, recreation and culture.
What adaption are possible to cope with situation?
The report finds that aggressive adaptation efforts will help “buy time” for many communities. For example, changing fishery management practices can help maintain fish and shellfish populations. Protecting mangrove and tidal marshes can help protect coasts from increased storm surge and flooding. Investments in early warning systems can assist coastal communities facing natural disasters.
But there are very clear adaptation limits, and many impacts will still occur even if we reduce emissions. Some island nations, for example, could become uninhabitable due to sea level rise. Even if warming is limited to 1.5 degrees C, some communities — such as those in the high mountains, Arctic and along the coast — will not be able to adapt to all climate impacts.
What can mitigate further warming of ocean and cryosphere?
Urgent actions on climate deal to achieve goal of limiting temperature rise within 1.5-degree C. adopting SDGs holistically.
What is ocean-based climate action that can limit global temperature rise?
According to a report ocean-based climate action could deliver up to 21% of the emissions reductions needed by 2050 to limit global temperature rise to 1.5 degrees C, the target necessary to prevent some of the worst impacts. Ocean based climate actions according to report:
These measures would not only help reduce the emissions that are warming and acidifying the ocean; they would create new jobs, enhance coastal resilience, boost food security, and improve air quality and human health.