Posted on Apr 22, 2021
Climate crisis poses existential threat to U.S. national security, Defense secretary says
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Secretary of Defense Lloyd Austin on Thursday described the climate crisis as one of the nation’s existential threats with the potential to profoundly destabilize global security...
In his remarks, Austin gave a few examples of extreme weather caused by climate change that directly impacted the U.S. military and its installations."
In his remarks, Austin gave a few examples of extreme weather caused by climate change that directly impacted the U.S. military and its installations."
Climate crisis poses existential threat to U.S. national security, Defense secretary says
Posted from cnbc.com
Climate Change
SECDEF
National Security
Posted >1 y ago
Responses: 2
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LTC Eugene Chu The Ones that have Been Screaming Longest and Loudest about Climate Change have been Military Scientist. Thankfully We Have Leadership that Actually Listens to those Voices.
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CW3 Dick McManus
We are in an ideological war on science. Over population is one of the big problems.
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Except people crying the sky is falling continue to buy in areas they say will be flooded.
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CW3 Dick McManus
There are more pressing problem from global warming than sea level rise in the near future. We must reduce CO2 pollution by more than 7 percent by 2030 or else that is the end of industrial civilization or worse.
megadrought persists, Colorado River reservoir getting low
April 18, 2021: The period from 2000 to 2018 was the driest 19-year stretch the southwestern United States has experienced since the 1500s, according to an analysis of tree ring data published in the journal Science in 2020. The scientists also found that the human-caused climate crisis can be blamed for nearly half of the drought's severity.
Another study by US Geological Survey scientists published in 2020 found that the Colorado River's flow has declined by about 20% over the last century and that over half of that decline can be attributed to warming temperatures across the basin. Most of the river's flow comes from snow that falls high in the Rocky Mountains of Colorado and southern Wyoming, said Chris Milly, a research hydrologist with the US Geological Survey and a co-author of the study.
Warming temperatures are leading to a decline in snowfall and an earlier snowmelt. But as the snow melts earlier and leaves behind bare ground, more heat energy from the sun is absorbed by the exposed soil. The warmer ground leads to more evaporation, which means less runoff from melting snow ends up in the river.
After an exceptionally hot and dry 2020, precipitation has continued to lag well below normal for much of the basin. Soil moisture levels across the region are also among the lowest on record.
The effects of those water cuts will be felt most acutely on farms in central Arizona, due to their lower priority status in a complex tier system used to determine who loses water first in the event of a shortage.
As a megadrought persists, new projections show a key Colorado River reservoir could sink to a record low later this year (msn.com)
The Global Crisis of Vanishing Groundwater
Video about this problem.
Pumped Dry: The Global Crisis of Vanishing Groundwater | USA TODAY - YouTube
Here is an link to a video about
America's Infrastructure Is Crumbling - YouTube
megadrought persists, Colorado River reservoir getting low
April 18, 2021: The period from 2000 to 2018 was the driest 19-year stretch the southwestern United States has experienced since the 1500s, according to an analysis of tree ring data published in the journal Science in 2020. The scientists also found that the human-caused climate crisis can be blamed for nearly half of the drought's severity.
Another study by US Geological Survey scientists published in 2020 found that the Colorado River's flow has declined by about 20% over the last century and that over half of that decline can be attributed to warming temperatures across the basin. Most of the river's flow comes from snow that falls high in the Rocky Mountains of Colorado and southern Wyoming, said Chris Milly, a research hydrologist with the US Geological Survey and a co-author of the study.
Warming temperatures are leading to a decline in snowfall and an earlier snowmelt. But as the snow melts earlier and leaves behind bare ground, more heat energy from the sun is absorbed by the exposed soil. The warmer ground leads to more evaporation, which means less runoff from melting snow ends up in the river.
After an exceptionally hot and dry 2020, precipitation has continued to lag well below normal for much of the basin. Soil moisture levels across the region are also among the lowest on record.
The effects of those water cuts will be felt most acutely on farms in central Arizona, due to their lower priority status in a complex tier system used to determine who loses water first in the event of a shortage.
As a megadrought persists, new projections show a key Colorado River reservoir could sink to a record low later this year (msn.com)
The Global Crisis of Vanishing Groundwater
Video about this problem.
Pumped Dry: The Global Crisis of Vanishing Groundwater | USA TODAY - YouTube
Here is an link to a video about
America's Infrastructure Is Crumbling - YouTube
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