Error message
Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 20 of /home/sobom/public_html/includes/file.phar.inc).
Carbon System Algorithm
We trained an empirical model to predict carbon system parameters from measured temperature, oxygen, salinity, pressure, and nitrate using data from P16S 2014 and S04P 2011 between 0 and 2100 m south of 45°S. We have applied these algorithms to floats in the Pacific Sector and evaluated the measured vs. the algorithm-predicted pH.




For example:
pHN = β0 + β1*S + β2*T + β3*P + β4*N
pHOx = β0 + β1*S + β2*T + β3*P + β4*O2
Target Variable |
Predictor Variables |
R2 |
rmse |
pHN
(pH units) |
Salinity
Temperature
Pressure
Nitrate |
0.981 |
0.010 |
pHOk
(pH units) |
Salinity
Temperature
Pressure
Oxygen |
0.964 |
0.008 |
DIC
(µmol/kg) |
Salinity
Temperature
Oxygen |
0.998 |
2.55 |
TA
(µmol/kg) |
Salinity
Temperature
Oxygen
Sigma Theta |
0.987 |
3.5 |
ΩAr
(no units) |
Salinity
Temperature
Pressure
Oxygen
Sigma Theta
|
0.993 |
0.024 |