美气象局：2019年7月成全球有记录以来最热月份

中等

高中一年级

说明文

世界与环境

文章主要介绍今年七月成为阿拉斯加创纪录最热月份以及由此造成的一些影响。

United States government scientists say July 2019 was the hottest month on record worldwide. The average temperature in July was almost one degree Celsius higher than the 20th century average of 15.78 degrees. That made it the hottest July on our planet over the past 140 years, according to the U.S. National Oceanic and Atmospheric Administration, or NOAA.

美国政府科学家称，2019年7月是全球有记录以来最热的月份。7月份的平均气温比20世纪15.78度的平均气温高出近1摄氏度。根据美国国家海洋和大气管理局的说法，这使它成为过去140年来我们星球上最热的七月。

July 2019 also was the hottest month on record in the northwestern state of Alaska. Sea ice melted. Bering Sea fish swam in above-normal temperatures. So did children in the city of Nome, Alaska. The state’s wildfire season started early and stayed late. Walruses and other sea creatures appeared in large numbers along the coast. Alaska’s average temperature in July was 14.5 degrees Celsius. That is 3 degrees above average, NOAA reported. Unusual weather events like this could become more common with climate warming, notes climate researcher Brian Brettschneider. Sea ice off of Alaska’s north and northwest coast and other Arctic areas shrank to the lowest level ever recorded for July. Arctic sea ice for July set a record low of 7.6 million square kilometers. That represents a loss of 80,000 square kilometers — or about the size of South Carolina — below the old record low, set in July of 2012.

2019年7月也是西北部阿拉斯加州有记录以来最热的月份。海冰融化了。白令海鱼在高于正常水平的温度下游泳。阿拉斯加州诺姆市的孩子也是如此。该州的野火季节提前开始并且迟到了。海象和其他海洋生物沿海岸大量出现。阿拉斯加7月份的平均气温为14.5摄氏度。NOAA报道，这比平均水平高3度。气候研究员Brian Brettschneider指出，这种不寻常的天气事件可能会伴随着气候变暖变得更加普遍。

Sea ice is the home for polar bears and a place for female walruses and their young to rest. Several thousand walruses arrived along the coastline on July 30. That reportedly is the first time they have been observed in such large numbers before August.

阿拉斯加北部和西北部海岸以及其他北极地区的海冰缩减至7月份以来的最低水平。7月北极海冰创下760万平方公里的历史新低。这意味着损失了80,000平方公里 —— 或大约相当于南卡罗来纳州的面积 —— 低于2012年7月创下的历史新低。