According to one report, there is a 85% chance that the year will be classified as the second-warmest year.
This year will increasingly be the second or third warmest calendar year on the planet, recorded since modern times. The collection of temperature data began in 1880, according to the National Oceanic and Atmospheric Administration, published this week, in 1880.  This reflects the increasing impact of long-term man-made global warming and is particularly notable as there was no strong El Niño in the tropical Pacific this year. Such events are usually associated with the hottest years as they increase global ocean temperatures and add large amounts of heat to the atmosphere over the Pacific, the largest in the world.
According to a new report released on Monday, there is an approximately 85% chance that the year will be ranked as the second-warmest year in the NOAA dataset, with the possibility of slipping into third place. Overall, however, it is almost certain (with a probability of more than 99%) that 201
Remarkably, the 10 warmest October's since 2003 have occurred, and the five warmest months since 2015.
The October 2019 was the 43rd consecutive October, which was warmer than the 20th century average and the 418th consecutive month warmer than the average. This means that no one under the age of 38 has experienced an above-average cool year from a global point of view.
So far, global land and sea temperatures this year have been 1.69 degrees (0.94 degrees Celsius) above the 20th century. According to NOAA, the average of only 0.16 degrees is below the record high of the warmest 2016.
Other agencies that track global temperatures may be slightly different than NOAA in 2019, although this is likely to be similar in their overall data. For example, NASA interpolates temperatures in the low-data Arctic by assuming that temperatures throughout the region are similar to the nearest observation site. NOAA, on the other hand, ignores parts of the Arctic.
With the Arctic heating more than twice as fast as the rest of the world, this means that NOAA data may easily underestimate global temperatures, it would not be much.
To illustrate the differences that can arise between monitoring agencies, the European Union's Copernicus climate change service in October was ranked as the hottest month of its kind, slightly above its October 2016 level. NASA and NOAA, 2nd place on their lists.
Copernicus uses computer modeling data to monitor the planet's climate in near real-time compared to the surface weather stations that NASA and NOAA rely on and may be prone to prejudice on location accuracy and other issues , However, both agencies are working to adapt their records to eliminate such issues.
Ultimately, the long-term trend is important over many years to decades, and this shows a clear, sharp peak that scientists have shown. This can only be explained by increasing amounts of greenhouse gases such as carbon dioxide in the atmosphere.
Human activities, namely the burning of fossil fuels such as coal and oil for energy, are the main contributors to greenhouse gases.
According to NOAA, there were record October temperatures in parts of the North and West Pacific in northeastern Canada, as well as in parts of the South Atlantic, Africa, Europe, the Middle East, the Indian Ocean and South America.  The only region with record coldness this month was in the western US, where much of the Rockies had record colds for the month. Despite the absence of a designated El Niño in the tropical Pacific, average global sea surface temperatures this month ranged at the second-warmest rate, less than a tenth of a decade behind the record-breaking year of 2016, where there was an intense climate El Niño event.
The oceans absorb most of the extra heat that is pumped into the climate system through the formation of greenhouse gases. The heat content is measured below the surface and reaches record levels.
(Except for the headline, this story was not edited by NDTV staff and comes from a syndicated feed.)
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