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Numeric coefficients for potential NPP models used by calculate_potential_npp(). Contains all parameters for the Miami, NCEAS (tree and non-tree), and Rosenzweig models. Coefficients are verified against published sources.

Format

A data frame with columns:

Model

Model name (Miami, NCEAS_tree_TNPP, NCEAS_tree_ANPP, NCEAS_nontree_TNPP, NCEAS_nontree_ANPP, Rosenzweig).

Component

Formula component (F_MAT, F_MAP, Saturating, Log_linear).

Parameter

Parameter name (Max_gCm2yr, Midpoint, Rate, Coefficient, Exponent, Exp_divisor, Slope, Intercept).

Value

Numeric parameter value.

Unit

Physical unit of the parameter.

Formula_role

Role of the parameter in the model formula.

Climate_var

Climate variable the parameter applies to (Temperature, Precipitation, AET).

Source

Literature source reference.

Source

Lieth (1975) Modeling Primary Productivity of the World. Del Grosso et al. (2008) Ecology 89:2117-2126. Rosenzweig (1968) Am Nat 102:67-74.