According to researchers, the stationary trend in global warming, first reported two years ago by the Intergovernmental Panel on Climate Change, will end when the Pacific Ocean warms again. When the IPCC said global warming had halted, many skeptics cited that statement to accuse scientists of creating an elaborate human-activity-induced climate change hoax. In Science, scientists from Pennsylvania State University (Penn State), and the University of Minnesota Duluth wrote that global warming was caused by humans. They also stated in an academic journal Science, “Global Warming is Real.” This is a fact. The Pacific Ocean has gone through a cooling period and it will pick up speed as it heats back up. The Pacific Ocean in its “warm” phase. Image: Wikimediacommons. Professor Michael Mann of Penn State and his colleagues said that natural oscillations exist in the climate and that it is likely that things will turn the other direction. These weather swings are “variability in the internal climate system,” they said. Professor Mann said: “We know it’s important to differentiate between natural and human-caused climate variability in order to assess the effect of climate change on a range of phenomena, including droughts and extreme weather events.” He also explained that Prof. Mann and Prof. Byron Steinman of Penn State gathered information using a mixture of real-world observations and model simulations to determine what may be responsible for climate fluctuations in Northern Hemisphere. Spacial patterns of the Atlantic Multidecadal Oscillation. Image source: Penn State. Atlantic and Pacific Ocean Oscillations. The Atlantic Multidecadal Oscillation (also known as AMO) shows fluctuations in North Atlantic sea-surface temperatures over a period of 50 70 years. PDO, or Pacific Decadal Oscillation (for the Pacific Ocean), is its equivalent. Because PDO spans a longer time period, scientists concentrated on its multidecadal component. The PMO (Pacific Multidecadal Oscillation) The researchers discovered that AMO and PMO were not closely related. They aren’t, contrary to some claims by climatologists, part of any global “stadium wave oscillation”. Global warming has been given a false pause by a cooler Pacific Ocean. The researchers found that the Pacific Ocean had recently cooled dramatically, and this led to a significant slowdown in warming of the Northern Hemisphere. Because AMO was relatively flat, the team concluded that Atlantic Ocean temperature had no role in climate warming slowdown. The world was experiencing a false pause because the Pacific Ocean has become colder. According to them, the Pacific Ocean’s falling temperature and slowdown in global climate warming in recent years could be attributed to heat deep in the tropical Pacific as well as a tendency towards La Nina-like conditions. La Nina is an unusually cold ocean temperature in the Pacific Ocean’s equatorial area. It is opposite to El Nino. According to the authors, “While paleoclimate data suggests that such a response may be caused by subtle climate features that climate models don’t currently capture,” Prof. Mann stated that “our findings have significant implications for the attributions of recent climate modifications.” Scientists are confident that the Pacific Ocean’s cooling period will swing in the opposite direction. Global warming will accelerate as it warms again. According to the abstract in the journal, “Competition between modestly positive Peaks in the AMO or substantially negative-trending PMO is seen as producing a slowdown of a false pause in global warming over the past decade.” This pause could already have ended. According to NOAA data, last year was the warmest on record.
