Thread by @ncdave4life

@irish2witter @climpeter @IPCC_CH @mpclimate @bobkopp Impact of climate change on coastal sea-level trends is near zero. The "global"[sic] trend is so slight that in many places it's exceeded by local factors, like erosion, sedimentation & vertical land motion. Greta's hometown of Stockholm is one such place.
sealevel.info/MSL_graph.php?…

@irish2witter @climpeter @IPCC_CH @mpclimate @bobkopp If "global" sea-level rise accelerated, it would help with Stockholm's dredging expense.

dredgingtoday.com/2014/03/07/swe…

Unfortunately for Stockholm, there's been no significant reduction in the rate of sea-level decline there.

@irish2witter @climpeter @IPCC_CH @mpclimate @bobkopp The only really significant effects of manmade climate change are the large improvements in crop yields due to CO2 fertilization, and the mitigation of drought impacts, because eCO2 makes plants more water-efficient & drought-resistant.

@irish2witter @climpeter @IPCC_CH @mpclimate @bobkopp Here's a relevant paper:
sciencedirect.com/science/articl…
EXCERPT: "There have been many studies on the interaction of CO2 and water on plant growth. Under elevated CO2, less water is used to produce each unit of dry matter by reducing stomatal conductance."

@irish2witter @climpeter @IPCC_CH @mpclimate @bobkopp If you're too young to understand how important that is, count yourself blessed! Famine, usually due to drought, used to be a scourge comparable to war & disease. In the Bible it was the "Third Horseman of the Apocalypse."

@irish2witter @climpeter @IPCC_CH @mpclimate @bobkopp One of the big reasons that catastrophic famines are fading from memory is that we now have more CO2 in the atmosphere. It has increased average crop yields by about 20%, and significantly mitigated drought damage.

@irish2witter @climpeter @IPCC_CH @mpclimate @bobkopp Don't be misled by people who make their living hyping the imaginary climate crisis. Real scientists call warm periods "climate optimums." The best scientific evidence is that manmade climate change is modest & benign, and CO2 emissions are beneficial.