A region in southeastern Iran is becoming uninhabitable because of heat and drought (National Geographic). In Sistan and Baluchistan, “many horrors are already playing out. As a distant and isolated province with an almost entirely agrarian economy, it’s been poorly placed to adapt. In a possible harbinger of things to come elsewhere, it’s slowly falling apart. Residents have migrated in droves. Up to a fifth of the province’s 2.5 million people are or soon will be on the move.”
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Also from National Geographic, climate change is creating a new migration crisis in Bangladesh. “Bangladesh holds 165 million people in an area smaller than Illinois. One-third of them live along the southern coast…..Most of the country’s land area is no higher above sea level than New York City…..Over the last decade, nearly 700,000 Bangladeshis were displaced on average each year by natural disasters…..That number spikes in years with catastrophic cyclones…..But even in relatively calm years, there is a rising drumbeat of displacement as sea-level rise, erosion, salinity intrusion, crop failures, and repeat inundation make life along the coast untenable.”
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In the US, disruption of the flow of the Colorado River is a growing threat (2nd in a series by Yale e360). “This era of drying is especially serious because so much — some 40 million people and an economy that includes the world’s fifth largest, in California — is riding on the flow of the Colorado. The specter of a region facing an existential crisis because of a warming climate becomes more real every day.” The sources of this river’s water are disappearing, and alternatives for supply are scarce.
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More commentary on the main story reported in yesterday’s Climate Letter (Scientific American). The author adds some fresh insights that help to make clear the nature of threat. The exact operation of carbon sinks and the nature of the underlying reasons for their existence is vital information for any realistic formulation of future climates.
–A new report having unrelated authorship provides a remarkable example of the relationship between soil conditions and the carbon sink, only in this case having immediate application to the current track of annual CO2 cycles. The author reminds us that the CO2 level in the atmosphere rises at an above-average rate during years that have El Nino events, and explains why soil condition changes related to shifts in regional climate conditions serve as a primary reason. A weak El Nino predicted for 2019 becomes the basis of his CO2 level forecast for the year.
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An approach to vertical greenhouse farming developed in the Netherlands is showing indications of success. One interesting feature is that the CO2 level in the air inside the structures is intentionally doubled over the natural outside level, which indeed helps plants thrive when all other required nutrients are present.
Carl