2019, the second warmest year, limits the decade of rising temperatures

The world experienced almost record global temperatures in 2019, federal climate scientists said. The year culminated in what scientists said was the warmest decade of modern times.

In an annual report on the climate, scientists from NASA and the National Oceanic and Atmospheric Administration, which independently monitor global temperatures, were ranked last year as the warmest seconds since systematic record keeping began in 1880. It was, they said, a year of intense heat waves and forest fires, accelerated melting of polar ice caps, floods and rising seas.

“The decade that has just ended is clearly the warmest decade recorded,” he said

Gavin Schmidt,

Director of the Goddard Institute for Space Studies at NASA in New York. “Every decade since the 1960s has clearly been warmer than the last.”

During 2019, the average temperature on global land and ocean surfaces was 1.8 degrees Fahrenheit (0.98 degrees Celsius) above the average of the twentieth century, with 95% certainty, according to NASA calculations. NOAA scientists calculated the average global temperature as 1.71 degrees F (0.95 degrees C) above the average from 1901 to 2000. Each agency uses slightly different data sets and techniques to arrive at its results.

Average global temperatures

2019 was the second warmest year recorded and had the warmest June since 1880. July was tied in the warmest.

Variation of the average temperature of each month of the 20th century

2016 was the warmest year ever recorded with 1.67 ° F (0.93 ° C) above the 20th century average.

2016 had the warmest January ever recorded.

Variation of the average temperature of each month of the 20th century

2016 was the warmest year ever recorded with 1.67 ° F (0.93 ° C) above the 20th century average.

2016 had the warmest January ever recorded.

Variation of the average temperature of each month of the 20th century

2016 was the warmest year ever recorded with 1.67 ° F (0.93 ° C) above the 20th century average.

2016 had the warmest January ever recorded.

Variation of the average temperature of each month of the 20th century

2016 had the warmest January ever recorded.

2016 was the warmest year ever recorded with 1.67 ° F (0.93 ° C) above the 20th century average.

Share your thoughts

What questions do you have about the impact of climate change? Join the conversation below.

Their calculations are in line with a recent evaluation carried out by the Copernicus Climate Change Service of the European Union, operated by the European Center for Meteorological Forecasts of Medium Range, which last week ranked 2019 as the second warmest year recorded.

In total, 10 of the warmest years in their records occurred in the last decade, NOAA and NASA scientists said Wednesday.

Since the 1880s, the average global surface temperature has increased by approximately 2 degrees F (1 degree C), according to scientists from NASA’s Goddard Institute.

Much of the scientific work attributes the rise in temperatures to greenhouse gases such as carbon dioxide, methane and nitrous oxide from fossil fuel emissions, agriculture and cement production and changes in the use of ground, although some question the connections. Satellite studies of solar energy production since 1978 show that the Sun does not appear to be responsible for the warming trend observed in recent decades, NASA scientists reported.

Atmospheric carbon dioxide levels increased in 2019, reaching a seasonal peak of 414.7 parts per million (ppm) at the NOAA Mauna Loa atmospheric baseline observatory. It was the seventh consecutive year of global increases in carbon dioxide concentrations, according to data published by NOAA and Scripps Institution of Oceanography.

The warmest year to date was 2016, when an unusually strong El Niño current in the Pacific Ocean boosted global warming by influencing the formation of high and low pressure climate systems, trade winds and rainfall. In 2019, a relatively weak El Niño declined at the beginning of the year, scientists from NASA and NOAA said.

The heat of the ocean during 2019 was the highest recorded, NOAA scientists said.

Climate dynamics often affects regional temperatures differently, so not all areas of the Earth experienced the same temperatures last year.

In 2019, Europe recorded its warmest calendar year, experiencing two of the most intense heat waves in its modern history during June and July, according to the Copernicus Climate Change Service, which provides climate analyzes to EU member countries. High temperatures set heat records in six countries, according to Weather Channel. Paris recorded a high temperature of 108.7 degrees F (42.6 C) in July, breaking a record 72 years at 4 degrees F.

For the entire United States, NOAA scientists discovered that the average annual temperature for 2019 was the third warmest recorded, while Alaska, Georgia and North Carolina experienced the warmest year in their history. The average temperature in the continental United States, excluding Alaska, was the 34th warmest in 126 years, scientists said.

Alaska also experienced destructive fires that, when combined with those in California, caused damage of more than $ 1 billion, NOAA scientists said. According to the NOAA count, another 13 billion climate-related disasters hit the United States last year, including Hurricane Dorian, tornadoes, hail storms and floods in 15 states.

After adjusting to inflation, the United States experienced more than double the climatic disasters of billions of dollars over the past decade (119) compared to the 10 years that preceded it (59), NOAA scientists said.

Write to Robert Lee Hotz at [email protected]

Copyright © 2019 Dow Jones & Company, Inc. All rights reserved. 87990cbe856818d5eddac44c7b1cdeb8

.

Leave a Reply

Your email address will not be published. Required fields are marked *