Weather events: known and documented facts

In 2018, the Intergovernmental Panel on Climate Change (IPCC), the United Nations body responsible for assessing climate change, warned in its Special Report that we cannot allow global temperatures to rise by more than 1.5°C compared to pre-Industrial Revolution levels. Forecasts are that if global temperatures rise by 2°C, the consequences could be disastrous and the loss of biodiversity and habitats irreversible.

Each year, high temperatures become more frequent and have caused several fires. These usually occur as a result of intense drought that significantly reduces soil moisture, making it drier and more prone to forest fires.

Peter Buschmann for Forest Service, Usda. Wildfires occur in both the Northern and Southern Hemispheres. (UN News)

NASA, a US space agency, through the Climate 360º project, releases information about the effects of climate change on the planet. On the project website, we can access old and current images for comparison, as we will see below.

Muir Glacier is located in southwestern Alaska (USA). The photo above on the left was taken in 1941 and the photo on the right in 2004. In just 63 years the change in the landscape is astonishing.

Pederson Glacier is also located in south-central Alaska (USA). The photo above on the left was taken in 1917 and the photo on the right in 2005. Both photos were taken in the summer.

The Mattlehorn mountain is located in the Alps, on the border between Switzerland and Italy. The photo above on the left was taken in August 1960 and the photo on the right in August 2005. An example of climate change on the European continent.

The Corey Kalis Glacier is located in the Andes, Peru, South America. The photo above on the left was taken in July 1978 and the photo on the right in July 2011. Extreme rainfall and drought also cause changes to the landscape.

Lake Powell is located on the border between the states of Utah and Arizona in the United States. The photo above on the left was taken in March 1999 and the photo on the right in May 2014. The change in the landscape is a result of extreme droughts that have plagued the US in recent decades. 

A study led by researchers from the University of Queensland, Australia, published in the scientific journal Environmental Research Letters, showed that five islands, Kale, Zollies, Rehana, Kakatina and Rapita, which were part of the Solomon Islands, have completely disappeared due to rising sea levels. Aerial and satellite images taken between 1947 and 2014 were analyzed. 

According to the World Meteorological Organization (WMO), 2021 is among the hottest years in history, with 2016 being the hottest year to date. According to the WMO Secretary-General, “2021 will be remembered for record-breaking temperatures of nearly 50°C in Canada, comparable to the values recorded in the Algerian desert.” 

These are just a few examples of how the Earth is changing due to climate change and global warming.

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