– ”An important comprehensive review of climate indicators confirms that the world is increasing its temperature and that the past decade was the warmest in history,” states the annual report on the climate matters.
The report, compiled by 300 scientists from 48 different countries, describes the review of 10 indicators that are ”clearly and directly related to surface temperatures, and they all say the same thing: global warming is undeniable.”
Concern about rising temperatures has also increased in recent years as specialists report an increase in atmospheric temperatures associated with greenhouse gases emitted by industries and other human activities. But there are skeptics who have questioned the findings on global warming.
The report, number 20 in a series, focuses only on global warming and does not specify a cause for this phenomenon.
“The evidence in this report might say yes unequivocally, there is no doubt” that the planet is warming, said Tom Karl, acting director of Administration Weather Service National Oceanic and Atmospheric Administration (NOAA).
Deke Arndt, head of the climate monitoring branch at the National Climate Information Centre, said the 1980s was the hottest so far in the story, but each year in the 1990s had a temperature greater than the average of the 1980s. That makes the 1990s the hottest decade, he added.
However, each year of the first decade of the twenty-first century has been warmer than the average of the 1990s, so that the first years of the new millennium are now the warmest on record.
The report stressed that continued warming will threaten coastal cities, infrastructure, water supply, health and agriculture.
In this regard, a study by Princeton University released Monday suggested that continued warming could cause another 6.7 million Mexicans migrate to the United States by drought affecting crops in their country.
“At first glance, the amount of increase in each decade, about one fifth of a degree Fahrenheit, it may seem little,”said the annual report on the State of Climate.
“But the increase in temperature of nearly one degree Fahrenheit has been experienced in the last 50 years has altered the planet. The glaciers and sea ice melt, heavy rains are on the rise and heat waves have become increasingly common and more intense, “he said.
One degree Fahrenheit is roughly equal to 0.56 degrees Celsius.
Last month was the warmest June on record, and this year has had the hottest average for the period between January and June since records began in temperature, NOAA reported last week.