Adds saturation fraction#2149
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precipitable water
David Flack (daflack)
requested review from
James Frost (jfrost-mo) and
James Warner (jwarner8)
David Flack (daflack)
requested review from
Sylvia Bohnenstengel (Sylviabohnenstengel) and
ukmo-huw-lewis
James Warner (jwarner8)
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James Warner (jwarner8)
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Looks good, a few small queries/clarifications.
| # (following trapezoid rule). | ||
| pw = np.trapezoid( | ||
| w.data, | ||
| x=w.coord("level_height").points[:], |
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Does model always use "level_height" as coordinate name for model levels? Realise this is for the UM, with LFRic data needing to be fixed to include this auxilliary coordinate alongside model_level_number.
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| # Determine array information of input cube to get | ||
| # correct cube to copy across to. | ||
| if len(w.coord("realization").points) != 1 and len(w.coord("time").points) != 1: |
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are we making assumptions of the cube structure/how dimensions are ordered?
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I think there is some code somewhere in CSET which returns the axis names and which index they are. It might be in one of Huw's merged branches. If we do assume a structure, be good to be clear about this in code in comments so easier to debug later on
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| It can be calculated as | ||
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| .. math:: spw = frac{1}{\rho_w} \int \frac{w}{RH} dz |
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any ref/book citation we can use to ground this?
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| and can be used throughout the globe with the same interpretation. | ||
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| For a recent, example, [Daviesetal2026]_ have applied the concept to their |
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| For a recent, example, [Daviesetal2026]_ have applied the concept to their | |
| For a recent example, [Daviesetal2026]_ have applied the concept to their |
| precipitable water are derived, before their ratios are taken for the | ||
| saturation fraction. | ||
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| A saturation fraction close to one implies that the atmopshere is fully |
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| A saturation fraction close to one implies that the atmopshere is fully | |
| A saturation fraction close to one implies that the atmosphere is fully |
| operator: constraints.combine_constraints | ||
| constraint_1: | ||
| operator: constraints.generate_var_constraint | ||
| varname: "m01s00i408" |
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will this work on LFRic data as it wont have STASH attributes?
2 participants
Also includes operators for precipitable water and saturation precipitable water as needed within saturation fraction code.
Fixes #1965
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rose-suite.conf.examplehas been updated if new diagnostic added.