urbanvprm_calc_R: calculate urbanVPRM ecosystem respiration

In Timothy-W-Hilton/VPRMLandSfcModel: R implementation of VPRM with parameter estimation

calculate urbanVPRM ecosystem respiration

Description

calculates urbanVPRM ecosystem respiration (R) according to Hardiman et al. (2017) SI eqn 7 and SI eqn 8 as described in SI section S2.4.

Usage

urbanvprm_calc_R(Rinit, driver_data, alpha_param, beta_param)

Arguments

Rinit	numeric; the Rinit term, equal to the respiration for the Mahadevan et al (2007) formulation.
driver_data	May be a VPRM_driver_data object or a data frame. If a data frame, driver_data must contain the variables Tscale, Pscale, Wscale, EVI, PAR, and Tresp. The variables alpha and beta are optional (see 'details').
alpha_param	numeric, optional; VPRM parameter (slope of respiration with respect to temperature)
beta_param	numeric, optional; VPRM parameter (basal respiration rate)
model_form	string, optional; form of VPRM model to use. Options are "Mahadevan07" (default) to use the VPRM formulation of Mahadevan et al. (2007), or "urban" to use the urbanVPRM formulation of Hardiman et al. (2017). If set to "urban", the driver data must include variables ISA proportion (impervious surface area, 0.0 to 1.0) and refEVI (reference EVI).

Details

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Value

vector of same length as number of rows in driver_data containin urbanVPRM ecosystem respiration [umol m-2 s-1]

Author(s)

Timothy W. Hilton

References

Hilton, T. W., Davis, K. J., Keller, K., and Urban, N. M.: Improving North American terrestrial CO2 flux diagnosis using spatial structure in land surface model residuals, Biogeosciences, 10, 4607-4625, doi:10.5194/bg-10-4607-2013, 2013.

Mahadevan, P., Wofsy, S., Matross, D., Xiao, X., Dunn, A., Lin, J., Gerbig, C., Munger, J., Chow, V., and Gottlieb, E.: A satellite-based biosphere parameterization for net ecosystem CO2 exchange: Vegetation Photosynthesis and Respiration Model (VPRM), Global Biogeochem. Cy., 22, GB2005, doi:10.1029/2006GB002735, 2008.

Hardiman, B. S., Wang, J. A., Hutyra, L. R., Gately, C. K., Getson, J. M., & Friedl, M. A. (2017). Accounting for urban biogenic fluxes in regional carbon budgets. Science of The Total Environment, 592, 366–372. https://doi.org/10.1016/j.scitotenv.2017.03.028

Timothy-W-Hilton/VPRMLandSfcModel documentation built on July 29, 2023, 8:43 p.m.