Earth Notes: On Website Technicals (2024-09)

I have adjusted P/p and Q/q to for a threshold CoP of 2, as that is the case now and shows that it can happen!

I have adjusted P/p to use CoP% (ie if current intensity is a little under predicted then the value is a little over 100), and over 150 now flags significant saving from topping-up storage.

This numeric value allows a smooth fading in of maximum top-up percentage from (say) a CoP% of 150 to 250, eg with a mean of 200%.

Right now I am seeing both P and Q flags, but no 'supergreen' G (though grid is ordinary green).

2024-09-05T14:26Z MT 41 GI 78 IT 169 F PQbvx ES 1

A matching change has been made for calculating Q/q and a CoP >150% significance threshold.

The grid went supergreen at 4pm ie peak time (H), so a top-up would have been locked out here:

2024-09-05T14:31Z MT 41 GI 78 IT 168 F PQbvx ES 1
2024-09-05T14:36Z MT 41 GI 78 IT 168 F PQbvx ES 1
2024-09-05T14:41Z MT 1 GI 78 IT 0 F PQbvx ES 1
2024-09-05T14:46Z MT 1 GI 78 IT 0 F PQbvx ES 1
2024-09-05T14:51Z MT 1 GI 80 IT 0 F PQbvx ES 1
2024-09-05T14:56Z MT 1 GI 82 IT 0 F PQbvx ES 1
2024-09-05T15:01Z MT 0 GI 86 IT 0 F HGPQbvx ES 1
2024-09-05T15:06Z MT 0 GI 85 IT 0 F HGPQbvx ES 1

(Intensity has sharply fallen over 24h and is due to rise again over 48h...)

Moments that are supergreen (G) and with at least one of P and Q can be picked out with something like:

% egrep ' F [^ ]*[PQ]' data/heatBattery/log/live/20240905.log | egrep ' F [^ ]*G'

I added a Q (and converse q) flag (indicating that a big grid intensity fall has happened over the last 7d, so storing heat now would have an effective CoP >1) to script/heat-battery-target.sh output to estimate how often it might drive a top-up, with an initial threshold value of a CoP >2.0.

Yes, all the good and obvious flag letters have been used...

I added a P (and converse p) flag (indicating that a big grid intensity rise is predicted over the next 48h, so storing heat now would have an effective CoP >1) to script/heat-battery-target.sh output to estimate how often it might drive a top-up eg 2024-09-03T14:31Z MT 0 GI 225 IT 139 F Rpbvx ES 3, with an initial threshold value of a CoP >2.0.

304s

Google Search Console now reports that 29% of recent crawls of EOU by Google get 304s now. A number that has been rising steadily, mainly because I stopped using ETags I suspect.