Earth's average sea level has risen only nine inches despite a one-degree Celsius temperature increase due to thermal inertia and ice sheet dynamics
the verdict
INSUFFICIENT LEANING
refutedsupported
the weight of evidence
3 sources for · 0 against
The retrieved literature discusses aspects of global temperature changes, thermal expansion, and ice melt contributions to sea levels, but does not provide complete joint evidence for the exact combination of a nine-inch sea level rise, a one-degree Celsius warming, and the specific causal mechanisms.
Measuring sea level change and understanding its causes has considerably improved in the recent years, essentially because new in situ and remote sensing observations have become available. Here we report on most recent results on contemporary sea level rise. We first present sea level observations from tide gauges over the twentieth century and from satellite altimetry since the early 1990s. We next discuss the most recent progress made in quantifying the processes causing sea level change on timescales ranging from years to decades, i.e., thermal expansion of the oceans, land ice mass loss, and land water-storage change. We show that for the 1993-2007 time span, the sum of climate-related contributions (2.85 +/- 0.35 mm year(-1)) is only slightly less than altimetry-based sea level rise (3.3 +/- 0.4 mm year(-1)): approximately 30% of the observed rate of rise is due to ocean thermal expansion and approximately 55% results from land ice melt. Recent acceleration in glacier melting and ice mass loss from the ice sheets increases the latter contribution up to 80% for the past five years. We also review the main causes of regional variability in sea level trends: The dominant contribution results from nonuniform changes in ocean thermal expansion.
Climate change is not the new phenomenon. The palaeo-climatic studies reveal that during the Pleistocene and Holocene periods several warm and cold periods occurred, resulted change of sea level and change in climatic processes like rise and fall of global average temperature and rainfall. The last medieval warm period was observed from 950 to 1350 AD, followed by the little Ice Age from 1400 to 1900 AD. Occurrence of these climatic changes and their impacts are considered due to natural processes that are geological and astronomical. In 1970s environmentalists and some climate scientists pointed that earth’s average temperature is rising linked with the anthropogenic causes of global warming and emission of carbon dioxide through fossil fuels. In late 1980s the problem was discussed in politics and media. To examine and monitor the global rise of temperature and its impacts due to the emission of carbon dioxide an organization of Intergovernmental Panel on Climate Change (IPCC) was created in 1988 by United Nations Environment Programme (UNEP). The IPCC released several reports based upon anthropogenic causes of climate change and their impacts. According to IPCC, 2007 report on climate change during the last 100 years the earth’s average temperature has increased up to 0.6 degree Celsius and if emission of greenhouse gases particularly carbon dioxide continues to rise, global temperature will rise up to 5.8 degrees Celsius by the end of 2100 AD. Similarly as a result of thi
According to the US National Oceanic and Atmospheric Administration, 2015--with an average global temperature 1.6[degrees] Fahrenheit warmer than the twentieth-century average--was Earth's warmest year since record keeping began in 1880, continuing a half-century-long trend of rising temperatures. The debate about climate change and appropriate policy response is often framed in terms of the likely impact on our children. Children born in 2016 will be 34 in 2050 and 84 in 2100. How will the probable rise in temperature (3.6 to 7.2[degrees] Fahrenheit, or 2 to 4[degrees] Celsius), rising sea levels, and the increasing likelihood of extreme weather affect the course of their lives and the lives of their children? This issue of The Future of Children outlines the likely consequences of climate change on child health and wellbeing and identifies policies that could mitigate negative impacts. Four interrelated themes emerge from the issue. 1. Climate change will fundamentally alter Earths climate system in many ways that threaten children's physical and mental wellbeing. 2. Today's children and future generations will bear a disproportionate share of the burden of climate change, which will affect child wellbeing through many direct, indirect, and societal pathways. 3. Children in developing countries and countries with weak institutions face the greatest risks. 4. The uncertainties associated with climate change and its mitigation--coupled with the fact that the costs of climate
Everything we examined (3)
This check searched the claim as stated. It did not run a separate search for evidence against it.