colour.sd_rayleigh_scattering#
- colour.sd_rayleigh_scattering(shape: SpectralShape = SPECTRAL_SHAPE_DEFAULT, CO2_concentration: ArrayLike = CONSTANT_STANDARD_CO2_CONCENTRATION, temperature: ArrayLike = CONSTANT_STANDARD_AIR_TEMPERATURE, pressure: ArrayLike = CONSTANT_AVERAGE_PRESSURE_MEAN_SEA_LEVEL, latitude: ArrayLike = CONSTANT_DEFAULT_LATITUDE, altitude: ArrayLike = CONSTANT_DEFAULT_ALTITUDE, avogadro_constant: ArrayLike = CONSTANT_AVOGADRO, n_s_function: Callable = air_refraction_index_Bodhaine1999, F_air_function: Callable = F_air_Bodhaine1999) SpectralDistribution[source]#
Generate Rayleigh scattering spectral distribution for the specified spectral shape.
- Parameters:
shape (SpectralShape) – Spectral shape used to create the Rayleigh scattering spectral distribution.
CO2_concentration (ArrayLike) – \(CO_2\) concentration in parts per million (ppm).
temperature (ArrayLike) – Air temperature \(T[K]\) in kelvin degrees.
pressure (ArrayLike) – Surface pressure \(P\) of the measurement site.
latitude (ArrayLike) – Latitude of the site in degrees.
altitude (ArrayLike) – Altitude of the site in meters.
avogadro_constant (ArrayLike) – Avogadro’s number (molecules \(mol^{-1}\)).
n_s_function (Callable) – Air refraction index \(n_s\) computation method.
F_air_function (Callable) – \((6+3_p)/(6-7_p)\), the depolarisation term \(F(air)\) or King Factor computation method.
- Returns:
Rayleigh optical depth spectral distribution.
- Return type:
References
[BWDS99], [Wikipedia01d]
Examples
>>> from colour.utilities import numpy_print_options >>> with numpy_print_options(suppress=True): ... sd_rayleigh_scattering() SpectralDistribution([[360. , 0.5602465...], [361. , 0.5537481...], [362. , 0.5473446...], [363. , 0.5410345...], [364. , 0.5348161...], [365. , 0.5286877...], [366. , 0.5226477...], [367. , 0.5166948...], [368. , 0.5108272...], [369. , 0.5050436...], [370. , 0.4993425...], [371. , 0.4937224...], [372. , 0.4881820...], [373. , 0.4827199...], [374. , 0.4773348...], [375. , 0.4720253...], [376. , 0.4667902...], [377. , 0.4616282...], [378. , 0.4565380...], [379. , 0.4515186...], [380. , 0.4465686...], [381. , 0.4416869...], [382. , 0.4368724...], [383. , 0.4321240...], [384. , 0.4274405...], [385. , 0.4228209...], [386. , 0.4182641...], [387. , 0.4137692...], [388. , 0.4093350...], [389. , 0.4049607...], [390. , 0.4006451...], [391. , 0.3963874...], [392. , 0.3921867...], [393. , 0.3880419...], [394. , 0.3839523...], [395. , 0.3799169...], [396. , 0.3759348...], [397. , 0.3720053...], [398. , 0.3681274...], [399. , 0.3643003...], [400. , 0.3605233...], [401. , 0.3567956...], [402. , 0.3531163...], [403. , 0.3494847...], [404. , 0.3459001...], [405. , 0.3423617...], [406. , 0.3388689...], [407. , 0.3354208...], [408. , 0.3320169...], [409. , 0.3286563...], [410. , 0.3253386...], [411. , 0.3220629...], [412. , 0.3188287...], [413. , 0.3156354...], [414. , 0.3124822...], [415. , 0.3093687...], [416. , 0.3062941...], [417. , 0.3032579...], [418. , 0.3002596...], [419. , 0.2972985...], [420. , 0.2943741...], [421. , 0.2914858...], [422. , 0.2886332...], [423. , 0.2858157...], [424. , 0.2830327...], [425. , 0.2802837...], [426. , 0.2775683...], [427. , 0.2748860...], [428. , 0.2722362...], [429. , 0.2696185...], [430. , 0.2670324...], [431. , 0.2644775...], [432. , 0.2619533...], [433. , 0.2594594...], [434. , 0.2569952...], [435. , 0.2545605...], [436. , 0.2521548...], [437. , 0.2497776...], [438. , 0.2474285...], [439. , 0.2451072...], [440. , 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None})