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The Forum > General Discussion > Climate Emergency

Climate Emergency

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Max Green many who post here are to the right of the ault right
Some base their views on reading the paper the fish and chips came in
Climate emergency has a momentum all of its own
We spring not yet over, have a summer from hell to overcome
By its end that momentum will have grown beyond belief
Posted by Belly, Wednesday, 20 November 2019 11:11:17 AM
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Yes, we'll see. There's only 10% chance of La Nina which could rescue us with extra rain. 60% chance neutral, which is more or less 'normal' weather, and 30% chance of hell on earth El Nino drying us out even more.

https://public.wmo.int/en/our-mandate/climate/el-ni%C3%B1ola-ni%C3%B1a-update
Posted by Max Green, Wednesday, 20 November 2019 11:31:53 AM
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Belly,

"Some base their views on reading the paper the fish and chips came in"

Get up to date, wrapping fish and chips in old (or new) newspapers was made illegal decades ago, or else your local shop is out of touch with the world.
Posted by Is Mise, Wednesday, 20 November 2019 12:03:01 PM
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Is Mise,
I'm glad to see you post worthy and on-topic corrections there! ;-) Do you have something relevant to say about climate change?

In the meantime, our extra CO2 contribution continues to delay an extra 4 Hiroshima bombs per second of heat leaving the earth. In seconds, how long will it take you to read this post? Multiply by 4 Hiroshimas. That's how much extra energy we've trapped while you've been reading this.
Posted by Max Green, Wednesday, 20 November 2019 1:00:54 PM
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Plant transpiration and its use of CO2.
The quantitative relation between stomatal aperture and gas exchange through the stomatal pore can be described by physical models derived from Fick's first law of diffusion. Such models, usually based on a simplified pore geometry, are used to calculate leaf conductance from stomatal pore dimensions or vice versa. A combination of gas‐exchange measurements and simultaneous microscopical observations of stomatal apertures was used to empirically determine this relationship. The results show a substantial deviation between measured stomatal conductance and that calculated from the simplified models. The main difference is a much steeper increase of conductance with aperture at small apertures. When the calculation was based on a realistic pore geometry derived from confocal laser scanning microscopy, a good fit to the experimentally found relationship could be obtained if additionally a significant contribution of a mesophyll diffusional resistance was taken into account.

To investigate the diurnal variation of stomatal sensitivity to CO2, stomatal response to a 30 min pulse of low CO2 was measured four times during a 24 h time‐course in two Crassulacean acid metabolism (CAM) species Kalanchoe daigremontiana and Kalanchoe pinnata, which vary in the degree of succulence, and hence, expression and commitment to CAM. In both species, stomata opened in response to a reduction in pCO2 in the dark and in the latter half of the light period, and thus in CAM species, chloroplast photosynthesis is not required for the stomatal response to low pCO2. Stomata did not respond to a decreased pCO2 in K. daigremontiana in the light when stomata were closed, even when the supply of internal CO2 was experimentally reduced. We conclude that stomatal closure during phase III is not solely mediated by high internal pCO2, and suggest that in CAM species the diurnal variability in the responsiveness of stomata to pCO2 could be explained by hypothesizing the existence of a single CO2 sensor which interacts with other signalling pathways. When not perturbed by low pCO2, CO2 assimilation rate and stomatal conductance were correlated both in the light and in the dark in both species.
Posted by Josephus, Wednesday, 20 November 2019 2:04:09 PM
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Well I roam around the bush a bit
Once walked it now age makes it a drive, bit down this few days so? went for a drive
On to the long ago highway, back on the new few dirt roads, all well known to me
Seen them all in drought and good times, in places some of our best land
DRY no not just dry grass dying dry, heat dried and either blackened and burnt or dead, never ever seen anything like that
this gardener has twice the water storage his neighbors have 44.250 liters
Down to my last 500, watering only two tubs, see fill one tank is three four hundred dollar loads
Water? two tubs from? two liter bottle after topping up the aviary water.
Tell those living in this area, 200 klm, we do not have an emergency
Posted by Belly, Wednesday, 20 November 2019 2:52:26 PM
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