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SKIMsimulator Coded in python 3, tested with python 2.7 and 3.5 can - PowerPoint PPT Presentation

Dec 09, 2022 •320 likes •451 views

SKIMsimulator Coded in python 3, tested with python 2.7 and 3.5 can be downloaded from oceandatalab gitlab Output: - grids - radial velocity interpolated from model Input: - velocity - instrument noise SKIM simulator from any model - stoke

  1. SKIMsimulator Coded in python 3, tested with python 2.7 and 3.5 can be downloaded from oceandatalab gitlab Output: - grids - radial velocity interpolated from model Input: - velocity - instrument noise SKIM simulator from any model - stoke drift - Stoke biais - coordinates - radial stoke drift - radial velocity with total noise - nadir noise Simulator is configurable with a parameter file, the following parameters can be tested: - orbit - rotation speed: from 2.5 to 3.4 tr/min - order, position and number of beams: from 6 to 8 beam - instrumental noise: function of the radial angle and the beam angle (6 or 12) - Stoke parameter: G, - Bias parameters: perc_error, area to compute std(uss), errdcos if constant wb = G * perc_error * std(uss) * errdcos Nadir Simulator is build to be flexible to add and improve the error budget

  2. SKIMsimulator outputs SKIM-like data has been produced for the following region: Aghulas - Gulf Stream - Oregon - FRAM - Equator - North Atlantic (with a white noise) - With two configurations 2016 2017v2 1 beams at 6º (0 and 180) 2 beams at 6º (0 and 180) - - 4 beams at 12º (0, 90, 180, 270) 5 beams at 12º (0, 77, - - w = 2.5 tr/min w = 3.4 tr/min - -

  3. Grids Gulf stream (S1a orbit, nadir, configuration 2016 and 2017v2) 2016 2017v2

  4. Grids other region (S1a orbit, nadir, configuration 2017v2) FRAM Agulhas Oregon Equator

  5. Grids other region (S1a orbit, nadir, configuration 2017v2) FRAM Agulhas Oregon Equator

  6. errdcos other region (S1a orbit, nadir, configuration 2017v2) FRAM Agulhas Oregon Equator

  7. SKIM simulated velocity (configuration 2017v2) FRAM Agulhas Oregon Equator

  8. SKIM simulated velocity Total error Std Total error Std Region Configuration 6º 12º Agulhas 2017v2 24 cm/s 23 cm/s Oregon 2017v2 19 cm/s 15 cm/s Equator 2017v2 15 cm/s 11 cm/s Fram 2017v2 22 cm/s 20 cm/s Gulf Stream 2017v2 20 cm/s 14 cm/s Gulf Stream 2016 25 cm/s 20 cm/s

  9. SKIM simulated velocity (configuration 2017v2, current from natl60 model, stoke drift from ww3) radial velocity without noise

  10. SKIM simulated velocity (configuration 2017v2, current from natl60 model, stoke drift from ww3) radial velocity with noise

  11. SKIM simulated velocity (configuration 2017v2, current from natl60 model, stoke drift from ww3) radial velocity green: model, red: radial velocity without noise, yellow: radial velocity with noise

  12. SKIM simulated velocity (configuration 2017v2, current from natl60 model, stoke drift from ww3) radial velocity green: model, red: radial velocity without noise, yellow: radial velocity with noise

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