Publicado: Lun, Febrero 11, 2019
Ciencia | Por Aurelio Ontiveros

2018 was fourth hottest year on record due to global warming

2018 was fourth hottest year on record due to global warming

On Wednesday it incorporated the final weeks of a year ago into its climate models and concluded that average global surface temperature in 2018 was 1 degree Celsius (1.8 Fahrenheit) above pre-industrial baseline levels.

"Across the globe, 2018 was extremely warm, with only a few places that were below our normal period [which runs from 1951 to 1980]", Gavin Schmidt, a climate scientist and director of NASA's Goddard Institute for Space Studies, said during a news conference held to announce the report.

The National Oceanic and Atmospheric Administration's annual report was released Wednesday, coming to the same conclusion that also was reached independently by the NASA Goddard Institute for Space Studies.

NASA declared Wednesday that 2018 was the fourth-hottest year in 139 years of records as average global temperatures rose alongside surging fossil fuel emissions. The hottest year on record was 2016 when the average global surface temperature was 0.99 degrees Celsius or 1.78 degrees Fahrenheit higher than the mid-20th century mean.

While this planet has seen hotter days in prehistoric times, and colder ones in the modern era, what sets recent warming apart in the sweep of geologic time is the relatively sudden rise in temperatures and its clear correlation with increasing levels of greenhouse gases like carbon dioxide and methane produced by human activity.

NASA's data takes temperatures from 6,300 weather stations along with ship and buoy-based observations of sea surface temperatures along with measurements from Antarctic research stations. The following year, 2017, is ranked as the second warmest. Collectively the four years are the warmest recorded since 1880. But in the long-term, the two agencies strongly agree on the pace and trajectory of global warming.

Baile de cifras en la manifestación contra Pedro Sánchez en Colón
El presidente del PP, Pablo Casado , ha asegurado que "el tiempo de Pedro Sánchez se ha acabado". Mario Vargas Llosa y Manuel Valls se encuentran entre los presentes en la manifestación.

British meteorologists predict the next five years will be even hotter than 2018.

"According to our calculations, the Gulf of Mexico region had it's third warmest year on-record this year", said Deke Arndt, chief of the monitoring section of NOAA's National Centers for Environmental Information. Deathly record lows are real in the United States of America, but don't be fooled by the cooling that we have been witnessing, global warming is real also.

Scientists believe that without a rapid reduction in greenhouse gas emissions, the warming trend will continue and the effects of climate change more severe.

The 2018 global temperature reports were originally scheduled for release in mid-January, but they were delayed because the 35-day partial government shutdown prevented government scientists from finalizing their calculations.

The nation's $1 billion disasters included hurricanes Florence and Michael and western wildfires that unfolded over several months.

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