Read dry deposition parameters from a spec file.

Parameters

[in,out]	file	Spec file.
[in,out]	drydep_params	Dry deposition parameters.

Dry deposition is simulated using the specified parameters:

z_ref (real, unit m): the reference height $z_{\rm ref}$ used in the calculation of aerodynamic resistance
u_mean (real, unit m s^{-1}): the wind speed at the reference height
z_rough (real, unit m): the roughness length associated with the surface
A (real, unit m): the characteristic radius of collectors associated with the surface
alpha (real, dimensionless): the parameter $\alpha$ used in the calculation of impaction efficiency $E_{\rm IM}$
eps_0 (real, dimensionless): the empirical constant used in the calculation of surface resistance
gamma (real, dimensionless): the exponent $\gamma$ used in the calculation of Brownian diffusion collection efficiency $E_{\rm B}$
C_B (real, dimensionless): the coefficient for Brownian diffusion collection efficiency $E_{\rm B}$
C_IN (real, dimensionless): the coefficient for interception collection efficiency $E_{\rm IN}$
C_IM (real, dimensionless): the coefficient for impaction collection efficiency $E_{\rm IM}$
nu (real, dimensionless): the exponent $\nu$ used in the calculation of interception collection efficiency $E_{\rm IN}$
beta (real, dimensionless): the exponent $\beta$ used in the calculation of impaction collection efficiency $E_{\rm IM}$