Global warming Is Occurring
What the science says...
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Empirical measurements of the Earth's heat content show the planet is still accumulating heat and global warming is still happening. Surface temperatures can show short-term cooling when heat is exchanged between the atmosphere and the ocean, which has a much greater heat capacity than the air.
To say we're currently experiencing global cooling overlooks one simple physical reality - the land and atmosphere are only one small fraction of the Earth's climate (albeit the part we inhabit). Global warming is by definition global. The entire planet is accumulating heat due to an energy imbalance. The atmosphere is warming. Oceans are accumulating energy. Land absorbs energy and ice absorbs heat to melt. To get the full picture on global warming, you need to view the Earth's entire heat content.
Church et al 2011 extends the analysis of Murphy 2009 which calculated the Earth's total heat content through to 2003. This new research combines measurements of ocean heat, land and atmosphere warming and ice melting to find that our climate system continued to accumulate heat through to 2008.
Figure 1: Total amount of heat from global warming that has accumulated in Earth's climate system from 1962 to 2008, from Church et al. (2011). Also see this graphic that shows the ocean heating in two layers, 0-700 meters and 700-2000 meters deep.
A look at the Earth's total heat content clearly shows global warming has continued past 1998. So why do surface temperature records show 1998 as the hottest year on record? Figure 1 shows the heat capacity of the land and atmosphere are small compared to the ocean (the tiny brown sliver of "land + atmosphere" also includes the heat absorbed to melt ice). Hence, relatively small exchanges of heat between the atmosphere and ocean can cause significant changes in surface temperature.
In 1998, an abnormally strong El Nino caused heat transfer from the Pacific Ocean to the atmosphere. Consequently, we experienced above-average surface temperatures. Conversely, the last few years have seen moderate La Nina conditions which had a cooling effect on global temperatures. And the last few months have swung back to warmer El Nino conditions. This has coincided with the warmest June-August sea surface temperatures on record. This internal variation where heat is shuffled around our climate is the reason why surface temperature is such a noisy signal.onshape education rudy giuliani education blogging with google justification for higher education state board of education doctorate in education blogging your way by holly becker blog marketing vlogging camera blogging etiquette special education advocate state education rankings 2021 troup county board of education yolanda saldívar education adult education job in higher education hamilton county department of education mn education blogging hubspot blog into website blogging coach blogging out meaning dolph lundgren education broward virtual education high blogging video camera blog but blogging statistics vision in education explain xkcd blogging kindercare education blogging about tv shows blogging blogging meaning in english what is stem education richmond county board of education formal education definition blogging synonym blog off in a bongo importance of education getting into blogging blog post template google docs blogging pro jobs blog inside closet higher education news blogging host sites blogging from paradise insidetracker blog national association for the education of young children blog writers near me ipad education pricing blog sign off translate blogging into kannada blogging with google sites blogging platforms blog made with divi