Global warming is no stranger to everyone, and in recent years, it has been said almost every year. And from the global climate change data of 2021 that has just passed, it once again proves that global warming is still developing.
According to 2021 global average temperature data released by NASA, global temperatures in 2021 are 0.85 degrees Celsius (1.5 degrees Fahrenheit) higher than the average temperature in NASA's baseline period.
This means that global warming is still happening and is about 1.1°C higher than in the late 19th century. Therefore, such an average temperature is still above the industrial level. This also shows that if human beings do not make changes to the climate, then we may see more serious climate problems in the future.
Among them, the continuous effects under various climate changes will also appear. No, the "knock-on effect" triggered by global warming, rising sea levels have also become the focus of heated discussion, and NASA's Ocean Melting Greenland Mission (OMG) comprehensively surveyed the coastline of the world's largest island.
Warning again of the threat posed by rising sea levels to humanity, Greenland's glacier melting continues to intensify and is getting worse, and nasa's OMG mission once again proves that Greenland's glacier melting is accelerating. How fast is it?
According to the new unique measurements, Greenland's glaciers are melting seven times faster than they were 25 years ago, or 7 times faster than 25 years ago, which can be said to be quite rare. And they were given results from a 5-year survey of all 220 glaciers.
So how much of a threat is sea level rise? In fact, the threat has already appeared, and the threat level is gradually expanding. In addition to the impact of the acceleration of storm surges in coastal areas, the most severe is the submerged land.
In 2022, for example, the Associated Press again reported on the issue of Indonesia's move to the island of Borneo, the impact of sea level rise.
Indonesia's capital, Jakarta, faces traffic congestion, flooding and heavy pollution, and it is also the fastest sinking city in the world, sinking at a rate of 25 centimeters per year. Since Jakarta does not have enough drinking water pipes, the Jakartan mainly pumps groundwater, causing the land above to collapse. At the same time, due to rising sea levels, it is estimated that a third of the city may be submerged by 2050.
Therefore, it was forced to move the capital, otherwise it could only face a crisis impact, which was the first impact. However, the impact of this sea level on low-lying areas is only the tip of the iceberg we see.
For many coastal cities around the world, it will face fatal effects, and the melting of glaciers in greenland alone may lead to a very large number of cities becoming underwater cities, including large coastal cities on the mainland, which will also be affected by the crisis of sea level rise.
According to the overall sea level data released by China in 2021, it can be seen that from 1980 to 2020, the rate of sea level rise along China's coast was 3.4 mm/year, higher than the global average in the same period, and in 2020, China's coastal sea level was 73 mm higher than the average from 1993 to 2011, the third highest since 1980.
Therefore, China's sea level is also rising. And as soon as Greenland's glaciers all melt, China's offshore megacities will be more threatened by sea level.
Moreover, the sea level rise data released by NASA this time is already much higher than before. As early as 2018, People's Daily published a study stating that Greenland's glaciers were melting at an "unprecedented" rate for decades, and perhaps thousands of years.
If Greenland's glaciers all melted, it would raise global sea levels by 23 feet (about 7 meters). According to data released by NASA in 2022, if Greenland's ice melts completely, global sea levels will rise by about 24 feet (7.4 meters).
See? It is much higher, and it is estimated that it will rise by 7.4 meters, and the sense of crisis brought about by it will definitely be stronger. This shows that the final data on sea level rise may be much higher than expected, and the more detailed the data, the higher the rise.
New Scientist magazine also notes that in the worst-case scenario, parts of multiple cities around the world, including U.S. coastal cities, could disappear into the sea by the end of the century due to rising sea levels due to global warming.
Areas such as New York, Miami, Los Angeles and the San Francisco Bay Area, as well as London in the United Kingdom and Rio de Janeiro in Brazil, may disappear into the sea. For the mainland, cities such as Shanghai may also face the threat of sea level rise and may be submerged, so the threat of sea level rise is gradually increasing.
And you should know that this conclusion was measured by a team of 22 top scientists. And the estimate is that by the end of this century, sea levels around the world could rise by an average of 6.5 feet (about 2 meters).
Greenland is expected to rise by 7.4 meters after the fusion, which is more indicative of the fact that these cities may have been submerged by the sea by then. Therefore, sea level rise has become a trend.
There's also data, of course, that National Geographic has produced a series of interactive maps showing the disastrous consequences of all of Earth's ice melting and flowing into the oceans. If it all melts, it could cause sea levels to rise by 66 meters, engulfing cities and even countries, revolutionizing the appearance of continents and coastlines. So, we can't let the warming of the earth continue, and the glaciers continue to melt.