On the biases of empirical riverine gas transfer velocity models at high submergence - Supplementary data and software

Supplementary data and software for the work Dolcetti, G., Brocchini, M., & Siviglia, A. On the biases of empirical riverine gas transfer velocity models at high submergence. Submitted to Geophysical Research Letters The .csv files contain a global dataset of river geometry, hydraulics, and chemistry to calculate corrected CO2 emissions. The database is built upon the MERIT-Hydro framework. Eq. S1 and Eq. S2 refer to the equation used for calculating the average flow velocity and wet channel width: Eq. (S1): ln(V) = 0.285 ln(Q) − 1.64; ln(W) = 0.423 ln(Q) + 2.56 [from Raymond et al. (2012)] Eq. (S2): ln(V) = 0.12 ln(Q) − 1.06; ln(W) = 0.51 ln(Q) + 1.86 [from Raymond et al. (2013)] geometry.csv: - COMID: MERIT reach identifier - Lat: latitude - Lon: longitude - ReachLength: reach length (m) - Slope: surface slope (-) - Q_m3s: discharge (m^3/s) temperature.csv: - COMID: MERIT reach identifier - Tair: average air temperature (deg C) - Twater: estimated average water temperature (deg C) - Schmidt: estimated Schmidt number (-) - Solubility_mollatm: estimated solubility (mol / l atm) hydro.csv: - COMID: MERIT reach identifier - V_ms: estimated average flow velocity (m/s) - W_m: estimated wet channel width (m) - H_m: estimated average water depth (m) - Surf_m2: estimated surface area (m^2) submergence.csv - COMID: MERIT reach identifier - subm_: reconstructed relative submergence, H/D (-) - phi_: reconstructed partitioning coefficient \phi (-) TKEdiss.csv - COMID: MERIT reach identifier - eps_s_m2s3: bed-friction-dominated surface TKE dissipation rate, \varepsilon_s = u*^3/H (m^2 / s^3) - eps_d_m2s3: specific total stream power, \varepsilon_d = gSV (m^2 / s^3) - eps_phi_m2s3: submergence-corrected surface TKE dissipation rate, \varepsilon_phi = \phi \varepsilon_d + (1-\phi) \varepsilon_s k600.csv - COMID: MERIT reach identifier - k600_U19_s: gas transfer velocity calculated with U19 model as a function of eps_s_m2s3 (m/d) - k600_U19_d: gas transfer velocity calculated with U19 model as a function of eps_d_m2s3 (m/d) - k600_U19_phi: corrected gas transfer velocity calculated with U19 model as a function of eps_phi_m2s3 (m/d) - k600_Ray4_s: gas transfer velocity calculated with R12 n.4 model as a function of eps_s_m2s3 (m/d) - k600_Ray4_d: gas transfer velocity calculated with R12 n.4 model as a function of eps_d_m2s3 (m/d) - k600_Ray4_phi: corrected gas transfer velocity calculated with R12 n.4 model as a function of eps_phi_m2s3 (m/d) - k600_Ray5_s: gas transfer velocity calculated with R12 n.5 model as a function of eps_s_m2s3 (m/d) - k600_Ray5_d: gas transfer velocity calculated with R12 n.5 model as a function of eps_d_m2s3 (m/d) - k600_Ray5_phi: corrected gas transfer velocity calculated with R12 n.5 model as a function of eps_phi_m2s3 (m/d)