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Correct mistake in applying sigma to compute b_b_corr. #15

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Merged
MBARIMike merged 2 commits into from
Mar 31, 2025
Merged

Correct mistake in applying sigma to compute b_b_corr. #15

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Correct mistake in applying sigma to compute b_b_corr.
MBARIMike Mar 27, 2025
a50e090
New notebook that reads from stoqs_all_dorado to understand instrumen…
MBARIMike Mar 31, 2025
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138 changes: 138 additions & 0 deletions notebooks/6.2-mpm-hs2-values-over-time.ipynb
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7 changes: 6 additions & 1 deletion src/data/hs2_proc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -139,6 +139,10 @@ def hs2_calc_bb(orig_nc, cals):
# % Fax: (831) 775-1620
# % Email: sackmann@mbari.org
#
# This function calculates the backscattering coefficients from the raw
# HydroScat2 data. The raw data are converted to backscattering
# coefficients and chlorophyll fluorescence using the method described in
# the HydroScat2 manual: HS2ManualRevI-2011-12.pdf (Section 9 pp. 45-55).

hs2 = HS2()

Expand Down Expand Up @@ -183,7 +187,8 @@ def hs2_calc_bb(orig_nc, cals):
k_exp = float(cals[f"Ch{chan}"]["SigmaExp"])
sigma = k_1 * np.exp(k_exp * K_bb)

b_b_corr = sigma * b_b_uncorr
# -% b_b_corr = ((2*pi*chi).*(sigma.*beta_uncorr - beta_w)) + b_bw; (See Page 52 of HS2ManualRevI-2011-12.pdf) # noqa: E501
b_b_corr = ((2 * pi * chi) * (np.multiply(sigma, beta_uncorr) - beta_w)) + b_bw

setattr(hs2, f"bb{wavelength}", b_b_corr)
setattr(hs2, f"bbp{wavelength}", b_b_corr - b_bw)
Expand Down