Examining dozens of basins in the northern hemisphere that depend on snowmelt for water supplies, the authors of this article – The potential for snow to supply human water demand in the present and future – conclude that: “… that should greenhouse gas emissions continue along their recent trajectory… the risks of declines in snow resource potential exceed 67% in snow-sensitive basins, potentially impacting spring and summer water availability for nearly 2 billion people.” Among those areas to be adversely affected would be northern and central California and the Colorado basin area.
Archive for Climate Change
If global warming continues as it does, this report – Carbon choices determine US cities committed to futures below sea level – published in the Proceedings of the National Academy of Sciences, indicates that over 1100 coastal communities from Boston to Miami will face some kind of permanent flooding within the next few decades; in some cases, whole cities will have to be abandoned, among them New Orleans. The lists of threatened major cities are provided in tables (53- 56) accompanying this report. State scenarios (tables 57+) are also included; see how many people in New Jersey could be adversely affected. Depending on the conditions, well over one million people in the Garden State could be permanently displaced by 2100.
This July 23, 2015 report from the DoD – National Security Implications of Climate-Related Risks and a Changing Climate – was issued in response to a Congressional inquiry on how global warming would affect combat readiness and what risk mitigations are necessary. (This request was embedded in the DoD appropriations bill, Senate Report 113-211) As this very recent report points out: “Global climate change will have wide-ranging implications for U.S. national security interests over the foreseeable future because it will aggravate existing problems—such as poverty, social tensions, environmental degradation, ineffectual leadership, and weak political institutions—that threaten domestic stability in a number of countries.”(3)
Climate at a Glance from NOAA allows searching across several different data points for climatological factors dating back to 1895 for U.S. states, the nation as a whole, and for global territories. One can see how temperatures have fluctuated over time; each year’s result is available along with its ranking relative to other years’ recordings back to 1895. Highly instructive and a well-spring of data.
Contrary to various reports detailing a “hiatus” in global warming, this article in Science – Possible artifacts of data biases in the recent global surface warming hiatus – states that global warming continues.