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JGCRI / hector

The Hector Simple Climate Model
http://jgcri.github.io/hector/
GNU General Public License v3.0
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troposphere cooling to stratosphere O3 loss #308

Open kdorheim opened 5 years ago

kdorheim commented 5 years ago

For a project I have been working on with @ssmithClimate we've noticed that the troposphere cooling to stratosphere ozone loss is missing from Hector output. We were wondering if may be those values are not being reported in Hector output or if Hector is missing this capability. Either way this probably warrants some sort of Hector enhancement, to reporting this output separately from the O3 RF or adding it as a new Hector capability.

cahartin commented 5 years ago

That is not currently a feature in Hector. The O3 reported in Hector is tropospheric O3.

bpbond commented 5 years ago

this probably warrants some sort of Hector enhancement

Out of curiosity, how big an effect is this?

ssmithClimate commented 5 years ago

About -0.05 W/m^2 today, uncertainty is relatively high. I believe it was likely a little higher in the late 20th century when stratospheric ozone depletion peaked. It’s something we could put in as an exogenous time path, since it’s probably not worth the effort to put in a sub model of stratospheric ozone depletion.

cahartin commented 4 years ago

https://www.nature.com/articles/s41558-019-0677-4

ssmithClimate commented 4 years ago

Note that the warming found in the above study is actually from the GHG forcing, but they also conclude that ODP GHG forcing has a higher efficacy than other GHGs. We should probably consider incorporating efficacy into the model, once the science on adjusted RF settles down a bit more.