aero_rep_solver.c

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/* Copyright (C) 2021 Barcelona Supercomputing Center and University of
 * Illinois at Urbana-Champaign
 * SPDX-License-Identifier: MIT
 *
 * Aerosol representation-specific functions for use by the solver
 *
 */
/** \file
 * \brief Aerosol representation functions
 */
#include <camp/aero_rep_solver.h>
#include <camp/aero_reps.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
 
// Aerosol representations (Must match parameters defined in
// camp_aero_rep_factory
#define AERO_REP_SINGLE_PARTICLE 1
#define AERO_REP_MODAL_BINNED_MASS 2
 
/** \brief Flag Jacobian elements used to calculated mass, volume, etc.
 *
 * \param model_data A pointer to the model data
 * \param aero_rep_idx Index of aerosol representation to use for calculation
 * \param aero_phase_idx Index of the aerosol phase within the aerosol
 *                       representation
 * \param jac_struct 1D array of flags indicating potentially non-zero
 *                   Jacobian elements. (The dependent variable should have
 *                   been chosen by the calling function.)
 * \return Number of Jacobian elements flagged
 */
int aero_rep_get_used_jac_elem(ModelData *model_data, int aero_rep_idx,
                               int aero_phase_idx, bool *jac_struct) {
  int num_flagged_elem = 0;
 
  // Get pointers to the aerosol data
  int *aero_rep_int_data = &(
      model_data
          ->aero_rep_int_data[model_data->aero_rep_int_indices[aero_rep_idx]]);
  double *aero_rep_float_data =
      &(model_data->aero_rep_float_data
            [model_data->aero_rep_float_indices[aero_rep_idx]]);
 
  // Get the aerosol representation type
  int aero_rep_type = *(aero_rep_int_data++);
 
  // Get the particle radius and set of partial derivatives
  switch (aero_rep_type) {
    case AERO_REP_MODAL_BINNED_MASS:
      num_flagged_elem = aero_rep_modal_binned_mass_get_used_jac_elem(
          model_data, aero_phase_idx, aero_rep_int_data, aero_rep_float_data,
          jac_struct);
      break;
    case AERO_REP_SINGLE_PARTICLE:
      num_flagged_elem = aero_rep_single_particle_get_used_jac_elem(
          model_data, aero_phase_idx, aero_rep_int_data, aero_rep_float_data,
          jac_struct);
      break;
  }
  return num_flagged_elem;
}
/** \brief Get state array elements used by aerosol representation functions
 *
 * \param model_data A pointer to the model data
 * \param state_flags An array of flags the length of the state array
 *                    indicating species used
 */
void aero_rep_get_dependencies(ModelData *model_data, bool *state_flags) {
  // Get the number of aerosol representations
  int n_aero_rep = model_data->n_aero_rep;
 
  // Loop through the aerosol representations to determine the Jacobian elements
  // used advancing the aero_rep_data pointer each time
  for (int i_aero_rep = 0; i_aero_rep < n_aero_rep; i_aero_rep++) {
    // Get pointers to the aerosol data
    int *aero_rep_int_data = &(
        model_data
            ->aero_rep_int_data[model_data->aero_rep_int_indices[i_aero_rep]]);
    double *aero_rep_float_data =
        &(model_data->aero_rep_float_data
              [model_data->aero_rep_float_indices[i_aero_rep]]);
 
    // Get the aerosol representation type
    int aero_rep_type = *(aero_rep_int_data++);
 
    // Call the appropriate function
    switch (aero_rep_type) {
      case AERO_REP_MODAL_BINNED_MASS:
        aero_rep_modal_binned_mass_get_dependencies(
            aero_rep_int_data, aero_rep_float_data, state_flags);
        break;
      case AERO_REP_SINGLE_PARTICLE:
        aero_rep_single_particle_get_dependencies(
            aero_rep_int_data, aero_rep_float_data, state_flags);
        break;
    }
  }
}
 
/** \brief Update the aerosol representations for new environmental conditions
 *
 * \param model_data Pointer to the model data
 */
void aero_rep_update_env_state(ModelData *model_data) {
  // Get the number of aerosol representations
  int n_aero_rep = model_data->n_aero_rep;
 
  // Loop through the aerosol representations to update the environmental
  // conditions advancing the aero_rep_data pointer each time
  for (int i_aero_rep = 0; i_aero_rep < n_aero_rep; i_aero_rep++) {
    // Get pointers to the aerosol data
    int *aero_rep_int_data = &(
        model_data
            ->aero_rep_int_data[model_data->aero_rep_int_indices[i_aero_rep]]);
    double *aero_rep_float_data =
        &(model_data->aero_rep_float_data
              [model_data->aero_rep_float_indices[i_aero_rep]]);
    double *aero_rep_env_data =
        &(model_data->grid_cell_aero_rep_env_data
              [model_data->aero_rep_env_idx[i_aero_rep]]);
 
    // Get the aerosol representation type
    int aero_rep_type = *(aero_rep_int_data++);
 
    // Call the appropriate function
    switch (aero_rep_type) {
      case AERO_REP_MODAL_BINNED_MASS:
        aero_rep_modal_binned_mass_update_env_state(
            model_data, aero_rep_int_data, aero_rep_float_data,
            aero_rep_env_data);
        break;
      case AERO_REP_SINGLE_PARTICLE:
        aero_rep_single_particle_update_env_state(model_data, aero_rep_int_data,
                                                  aero_rep_float_data,
                                                  aero_rep_env_data);
        break;
    }
  }
}
 
/** \brief Update the aerosol representations for a new state
 *
 * \param model_data Pointer to the model data
 */
void aero_rep_update_state(ModelData *model_data) {
  // Get the number of aerosol representations
  int n_aero_rep = model_data->n_aero_rep;
 
  // Loop through the aerosol representations to update the state
  // advancing the aero_rep_data pointer each time
  for (int i_aero_rep = 0; i_aero_rep < n_aero_rep; i_aero_rep++) {
    // Get pointers to the aerosol data
    int *aero_rep_int_data = &(
        model_data
            ->aero_rep_int_data[model_data->aero_rep_int_indices[i_aero_rep]]);
    double *aero_rep_float_data =
        &(model_data->aero_rep_float_data
              [model_data->aero_rep_float_indices[i_aero_rep]]);
    double *aero_rep_env_data =
        &(model_data->grid_cell_aero_rep_env_data
              [model_data->aero_rep_env_idx[i_aero_rep]]);
 
    // Get the aerosol representation type
    int aero_rep_type = *(aero_rep_int_data++);
 
    // Call the appropriate function
    switch (aero_rep_type) {
      case AERO_REP_MODAL_BINNED_MASS:
        aero_rep_modal_binned_mass_update_state(model_data, aero_rep_int_data,
                                                aero_rep_float_data,
                                                aero_rep_env_data);
        break;
      case AERO_REP_SINGLE_PARTICLE:
        aero_rep_single_particle_update_state(model_data, aero_rep_int_data,
                                              aero_rep_float_data,
                                              aero_rep_env_data);
        break;
    }
  }
}
 
/** \brief Get the effective radius of a specified layer, \f$r_{layer}\f$ (m)
 *
 * Calculates the effective radius of a specified layer \f$r_{layer}\f$ (m), as well as the set of
 * \f$\frac{\partial r_{layer}}{\partial y}\f$ where \f$y\f$ are variables on the
 * solver state array.
 *
 * \param model_data Pointer to the model data
 * \param aero_rep_idx Index of aerosol representation to use for calculation
 * \param aero_phase_idx Index of the aerosol phase within the aerosol
 *                       representation
 * \param layer_radius Pointer to hold effective layer radius (m)
 * \param partial_deriv Pointer to the set of partial derivatives to be
 *                      calculated \f$\frac{\partial r_{eff}}{\partial y}\f$,
 *                      or a NULL pointer if no partial derivatives are needed
 */
void aero_rep_get_effective_layer_radius__m(ModelData *model_data, int aero_rep_idx,
                                      int aero_phase_idx, double *layer_radius,
                                      double *partial_deriv) {
  // Get pointers to the aerosol data
  int *aero_rep_int_data = &(
      model_data
          ->aero_rep_int_data[model_data->aero_rep_int_indices[aero_rep_idx]]);
  double *aero_rep_float_data =
      &(model_data->aero_rep_float_data
            [model_data->aero_rep_float_indices[aero_rep_idx]]);
  double *aero_rep_env_data =
      &(model_data->grid_cell_aero_rep_env_data
            [model_data->aero_rep_env_idx[aero_rep_idx]]);
 
  // Get the aerosol representation type
  int aero_rep_type = *(aero_rep_int_data++);
 
  // Get the particle radius and set of partial derivatives
  switch (aero_rep_type) {
    case AERO_REP_MODAL_BINNED_MASS:
      aero_rep_modal_binned_mass_get_effective_layer_radius__m(
          model_data, aero_phase_idx, layer_radius, partial_deriv, aero_rep_int_data,
          aero_rep_float_data, aero_rep_env_data);
      break;
    case AERO_REP_SINGLE_PARTICLE:
      aero_rep_single_particle_get_effective_layer_radius__m(
          model_data, aero_phase_idx, layer_radius, partial_deriv, aero_rep_int_data,
          aero_rep_float_data, aero_rep_env_data);
      break;
  }
  return;
}
 
/** \brief Get the effective particle radius, \f$r_{eff}\f$ (m)
 *
 * Calculates effective particle radius \f$r_{eff}\f$ (m), as well as the set of
 * \f$\frac{\partial r_{eff}}{\partial y}\f$ where \f$y\f$ are variables on the
 * solver state array.
 *
 * \param model_data Pointer to the model data
 * \param aero_rep_idx Index of aerosol representation to use for calculation
 * \param aero_phase_idx Index of the aerosol phase within the aerosol
 *                       representation
 * \param radius Pointer to hold effective particle radius (m)
 * \param partial_deriv Pointer to the set of partial derivatives to be
 *                      calculated \f$\frac{\partial r_{eff}}{\partial y}\f$,
 *                      or a NULL pointer if no partial derivatives are needed
 */
void aero_rep_get_effective_radius__m(ModelData *model_data, int aero_rep_idx,
                                      int aero_phase_idx, double *radius,
                                      double *partial_deriv) {
  // Get pointers to the aerosol data
  int *aero_rep_int_data = &(
      model_data
          ->aero_rep_int_data[model_data->aero_rep_int_indices[aero_rep_idx]]);
  double *aero_rep_float_data =
      &(model_data->aero_rep_float_data
            [model_data->aero_rep_float_indices[aero_rep_idx]]);
  double *aero_rep_env_data =
      &(model_data->grid_cell_aero_rep_env_data
            [model_data->aero_rep_env_idx[aero_rep_idx]]);
 
  // Get the aerosol representation type
  int aero_rep_type = *(aero_rep_int_data++);
 
  // Get the particle radius and set of partial derivatives
  switch (aero_rep_type) {
    case AERO_REP_MODAL_BINNED_MASS:
      aero_rep_modal_binned_mass_get_effective_radius__m(
          model_data, aero_phase_idx, radius, partial_deriv, aero_rep_int_data,
          aero_rep_float_data, aero_rep_env_data);
      break;
    case AERO_REP_SINGLE_PARTICLE:
      aero_rep_single_particle_get_effective_radius__m(
          model_data, aero_phase_idx, radius, partial_deriv, aero_rep_int_data,
          aero_rep_float_data, aero_rep_env_data);
      break;
  }
  return;
}
 
/** \brief Get the volume of a specified phase in the corresponding layer
 * 
 * Calculates the volume of a specified phase (m^3), as well as the set of
 * \f$\frac{\partial V}{\partial y}\f$ where \f$y\f$ are variables on the
 * solver state array.
 *
 * \param model_data Pointer to the model data, including the state array
 * \param aero_rep_idx Index of aerosol representation to use for calculation
 * \param aero_phase_idx Index of the aerosol phase within the representation
 * \param phase_volume Pointer to hold volume of the phase (m^3)
 * \param partial_deriv \f$\frac{\partial V}{\partial y}\f$ where \f$y\f$
 *                     are species on the state array
 */
 
void aero_rep_get_phase_volume__m3_m3(ModelData *model_data, int aero_rep_idx,
                                      int aero_phase_idx, double *phase_volume,
                                      double *partial_deriv) {
  // Get pointers to the aerosol data
  int *aero_rep_int_data = &(
      model_data
          ->aero_rep_int_data[model_data->aero_rep_int_indices[aero_rep_idx]]);
  double *aero_rep_float_data =
      &(model_data->aero_rep_float_data
            [model_data->aero_rep_float_indices[aero_rep_idx]]);
  double *aero_rep_env_data =
      &(model_data->grid_cell_aero_rep_env_data
            [model_data->aero_rep_env_idx[aero_rep_idx]]);
 
  // Get the aerosol representation type
  int aero_rep_type = *(aero_rep_int_data++);
 
  // Get the particle radius and set of partial derivatives
  switch (aero_rep_type) {
    case AERO_REP_MODAL_BINNED_MASS:
      aero_rep_modal_binned_mass_get_phase_volume__m3_m3(
          model_data, aero_phase_idx, phase_volume, partial_deriv, aero_rep_int_data,
          aero_rep_float_data, aero_rep_env_data);
      break;
    case AERO_REP_SINGLE_PARTICLE:
      aero_rep_single_particle_get_phase_volume__m3_m3(
          model_data, aero_phase_idx, phase_volume, partial_deriv, aero_rep_int_data,
          aero_rep_float_data, aero_rep_env_data);
      break;
  }
  return;
}
 
/** \brief Get the surface area of interfacial layer between two phases (m^2)
 *
 * Calculates surface area of a interfacial layer (m^2), as well as the set of
 * \f$\frac{\partial A}{\partial y}\f$ where \f$y\f$ are variables on the
 * solver state array.
 *
 * \param model_data Pointer to the model data
 * \param aero_rep_idx Index of aerosol representation to use for calculation
 * \param aero_phase_idx_first Index of the first aerosol phase within the
 *                       aerosol representation
 * \param aero_phase_idx_second Index of the second aerosol phase within the
 *                       aerosol representation
 * \param surface_area Pointer to surface area of interfacial layer (m^2)
 * \param partial_deriv Pointer to the set of partial derivatives to be
 *                      calculated \f$\frac{\partial A}{\partial y}\f$,
 *                      or a NULL pointer if no partial derivatives are needed
 */
void aero_rep_get_interface_surface_area__m2(ModelData *model_data, int aero_rep_idx,
                                      int aero_phase_idx_first, int aero_phase_idx_second, 
                                      double *surface_area, double *partial_deriv) {
  // Get pointers to the aerosol data
  int *aero_rep_int_data = &(
      model_data
          ->aero_rep_int_data[model_data->aero_rep_int_indices[aero_rep_idx]]);
  double *aero_rep_float_data =
      &(model_data->aero_rep_float_data
            [model_data->aero_rep_float_indices[aero_rep_idx]]);
  double *aero_rep_env_data =
      &(model_data->grid_cell_aero_rep_env_data
            [model_data->aero_rep_env_idx[aero_rep_idx]]);
 
  // Get the aerosol representation type
  int aero_rep_type = *(aero_rep_int_data++);
 
  // Get the interfacial layer surface area and set of partial derivatives
  switch (aero_rep_type) {
    case AERO_REP_MODAL_BINNED_MASS:
      aero_rep_modal_binned_mass_get_interface_surface_area__m2(
          model_data, aero_phase_idx_first, aero_phase_idx_second, surface_area, 
          partial_deriv, aero_rep_int_data, aero_rep_float_data, aero_rep_env_data);
      break;
    case AERO_REP_SINGLE_PARTICLE:
      aero_rep_single_particle_get_interface_surface_area__m2(
          model_data, aero_phase_idx_first, aero_phase_idx_second, surface_area, 
          partial_deriv, aero_rep_int_data, aero_rep_float_data, aero_rep_env_data);
      break;
  }
  return;
}
 
/** \brief Get the thickness of a particle layer (m)
 *
 * \param model_data Pointer to the model data, including the state array
 * \param aero_rep_idx Index of aerosol representation to use for calculation
 * \param aero_phase_idx Index of the aerosol phase within the representation
 * \param layer_thickness Effective layer thickness (m)
 * \param partial_deriv \f$\frac{\partial r_{eff}}{\partial y}\f$ where \f$y\f$
 *                      are species on the state array
 */
void aero_rep_get_layer_thickness__m(ModelData *model_data, int aero_rep_idx,
                                      int aero_phase_idx, double *layer_thickness,
                                      double *partial_deriv) {
  // Get pointers to the aerosol data
  int *aero_rep_int_data = &(
      model_data
          ->aero_rep_int_data[model_data->aero_rep_int_indices[aero_rep_idx]]);
  double *aero_rep_float_data =
      &(model_data->aero_rep_float_data
            [model_data->aero_rep_float_indices[aero_rep_idx]]);
  double *aero_rep_env_data =
      &(model_data->grid_cell_aero_rep_env_data
            [model_data->aero_rep_env_idx[aero_rep_idx]]);
 
  // Get the aerosol representation type
  int aero_rep_type = *(aero_rep_int_data++);
 
  // Get the particle radius and set of partial derivatives
  switch (aero_rep_type) {
    case AERO_REP_MODAL_BINNED_MASS:
      aero_rep_modal_binned_mass_get_layer_thickness__m(
          model_data, aero_phase_idx, layer_thickness, partial_deriv, aero_rep_int_data,
          aero_rep_float_data, aero_rep_env_data);
      break;
    case AERO_REP_SINGLE_PARTICLE:
      aero_rep_single_particle_get_layer_thickness__m(
          model_data, aero_phase_idx, layer_thickness, partial_deriv, aero_rep_int_data,
          aero_rep_float_data, aero_rep_env_data);
      break;
  }
  return;
}
 
/** \brief Get the particle number concentration \f$n\f$
 * (\f$\mbox{\si{\#\per\cubic\metre}}\f$)
 *
 * Calculates particle number concentration, \f$n\f$
 * (\f$\mbox{\si{\#\per\cubic\metre}}\f$), as well as the set of
 * \f$\frac{\partial n}{\partial y}\f$ where \f$y\f$ are variables on the
 * solver state array.
 *
 * \param model_data Pointer to the model data
 * \param aero_rep_idx Index of aerosol representation to use for calculation
 * \param aero_phase_idx Index of the aerosol phase within the aerosol
 *                       representation
 * \param number_conc Pointer to hold calculated number concentration, \f$n\f$
 *                    (\f$\mbox{\si{\#\per\cubic\metre}}\f$)
 * \param partial_deriv Pointer to the set of partial derivatives to be
 *                      calculated \f$\frac{\partial n}{\partial y}\f$, or a
 *                      NULL pointer if no partial derivatives are required
 */
void aero_rep_get_number_conc__n_m3(ModelData *model_data, int aero_rep_idx,
                                    int aero_phase_idx, double *number_conc,
                                    double *partial_deriv) {
  // Get pointers to the aerosol data
  int *aero_rep_int_data = &(
      model_data
          ->aero_rep_int_data[model_data->aero_rep_int_indices[aero_rep_idx]]);
  double *aero_rep_float_data =
      &(model_data->aero_rep_float_data
            [model_data->aero_rep_float_indices[aero_rep_idx]]);
  double *aero_rep_env_data =
      &(model_data->grid_cell_aero_rep_env_data
            [model_data->aero_rep_env_idx[aero_rep_idx]]);
 
  // Get the aerosol representation type
  int aero_rep_type = *(aero_rep_int_data++);
 
  // Get the particle number concentration
  switch (aero_rep_type) {
    case AERO_REP_MODAL_BINNED_MASS:
      aero_rep_modal_binned_mass_get_number_conc__n_m3(
          model_data, aero_phase_idx, number_conc, partial_deriv,
          aero_rep_int_data, aero_rep_float_data, aero_rep_env_data);
      break;
    case AERO_REP_SINGLE_PARTICLE:
      aero_rep_single_particle_get_number_conc__n_m3(
          model_data, aero_phase_idx, number_conc, partial_deriv,
          aero_rep_int_data, aero_rep_float_data, aero_rep_env_data);
      break;
  }
  return;
}
 
/** \brief Check whether aerosol concentrations are per-particle or total for
 * each phase
 *
 * \param model_data Pointer to the model data
 * \param aero_rep_idx Index of aerosol representation to use for calculation
 * \param aero_phase_idx Index of the aerosol phase within the aerosol
 *                       representation
 * \return 0 for per-particle; 1 for total for each phase
 */
int aero_rep_get_aero_conc_type(ModelData *model_data, int aero_rep_idx,
                                int aero_phase_idx) {
  // Initialize the aerosol concentration type
  int aero_conc_type = 0;
 
  // Get pointers to the aerosol data
  int *aero_rep_int_data = &(
      model_data
          ->aero_rep_int_data[model_data->aero_rep_int_indices[aero_rep_idx]]);
  double *aero_rep_float_data =
      &(model_data->aero_rep_float_data
            [model_data->aero_rep_float_indices[aero_rep_idx]]);
  double *aero_rep_env_data =
      &(model_data->grid_cell_aero_rep_env_data
            [model_data->aero_rep_env_idx[aero_rep_idx]]);
 
  // Get the aerosol representation type
  int aero_rep_type = *(aero_rep_int_data++);
 
  // Get the type of aerosol concentration
  switch (aero_rep_type) {
    case AERO_REP_MODAL_BINNED_MASS:
      aero_rep_modal_binned_mass_get_aero_conc_type(
          aero_phase_idx, &aero_conc_type, aero_rep_int_data,
          aero_rep_float_data, aero_rep_env_data);
      break;
    case AERO_REP_SINGLE_PARTICLE:
      aero_rep_single_particle_get_aero_conc_type(
          aero_phase_idx, &aero_conc_type, aero_rep_int_data,
          aero_rep_float_data, aero_rep_env_data);
      break;
  }
  return aero_conc_type;
}
 
/** \brief Get the total mass of an aerosol phase in this representation
 **        \f$m\f$ (\f$\mbox{\si{\kilogram\per\cubic\metre}}\f$)
 *
 * Calculates total aerosol phase mass, \f$m\f$
 * (\f$\mbox{\si{\kilogram\per\cubic\metre}}\f$), as well as the set of
 * \f$\frac{\partial m}{\partial y}\f$ where \f$y\f$ are variables on the
 * solver state array.
 *
 * \param model_data Pointer to the model data
 * \param aero_rep_idx Index of aerosol representation to use for calculation
 * \param aero_phase_idx Index of the aerosol phase within the aerosol
 *                       representation
 * \param aero_phase_mass Pointer to hold calculated aerosol-phase mass,
 *                        \f$m\f$
 *                        (\f$\mbox{\si{\kilogram\per\cubic\metre}}\f$)
 * \param partial_deriv Pointer to the set of partial derivatives to be
 *                      calculated \f$\frac{\partial m}{\partial y}\f$, or a
 *                      NULL pointer if no partial derivatives are needed
 */
void aero_rep_get_aero_phase_mass__kg_m3(ModelData *model_data,
                                         int aero_rep_idx, int aero_phase_idx,
                                         double *aero_phase_mass,
                                         double *partial_deriv) {
  // Get pointers to the aerosol data
  int *aero_rep_int_data = &(
      model_data
          ->aero_rep_int_data[model_data->aero_rep_int_indices[aero_rep_idx]]);
  double *aero_rep_float_data =
      &(model_data->aero_rep_float_data
            [model_data->aero_rep_float_indices[aero_rep_idx]]);
  double *aero_rep_env_data =
      &(model_data->grid_cell_aero_rep_env_data
            [model_data->aero_rep_env_idx[aero_rep_idx]]);
 
  // Get the aerosol representation type
  int aero_rep_type = *(aero_rep_int_data++);
 
  // Get the particle number concentration
  switch (aero_rep_type) {
    case AERO_REP_MODAL_BINNED_MASS:
      aero_rep_modal_binned_mass_get_aero_phase_mass__kg_m3(
          model_data, aero_phase_idx, aero_phase_mass, partial_deriv,
          aero_rep_int_data, aero_rep_float_data, aero_rep_env_data);
      break;
    case AERO_REP_SINGLE_PARTICLE:
      aero_rep_single_particle_get_aero_phase_mass__kg_m3(
          model_data, aero_phase_idx, aero_phase_mass, partial_deriv,
          aero_rep_int_data, aero_rep_float_data, aero_rep_env_data);
      break;
  }
}
 
/** \brief Get the average molecular weight of an aerosol phase in this
 **        representation \f$m\f$
 *(\f$\mbox{\si{\micro\gram\per\cubic\metre}}\f$)
 *
 * Calculates total aerosol phase mass, \f$m\f$
 * (\f$\mbox{\si{\micro\gram\per\cubic\metre}}\f$), as well as the set of
 * \f$\frac{\partial m}{\partial y}\f$ where \f$y\f$ are variables on the
 * solver state array.
 *
 * \param model_data Pointer to the model data
 * \param aero_rep_idx Index of aerosol representation to use for calculation
 * \param aero_phase_idx Index of the aerosol phase within the aerosol
 *                       representation
 * \param aero_phase_avg_MW Pointer to hold calculated average MW in the
 *                          aerosol phase (\f$\mbox{\si{\kilogram\per\mole}}\f$)
 * \param partial_deriv Pointer to the set of partial derivatives to be
 *                      calculated \f$\frac{\partial m}{\partial y}\f$, or a
 *                      NULL pointer if no partial derivatives are needed
 */
void aero_rep_get_aero_phase_avg_MW__kg_mol(ModelData *model_data,
                                            int aero_rep_idx,
                                            int aero_phase_idx,
                                            double *aero_phase_avg_MW,
                                            double *partial_deriv) {
  // Get pointers to the aerosol data
  int *aero_rep_int_data = &(
      model_data
          ->aero_rep_int_data[model_data->aero_rep_int_indices[aero_rep_idx]]);
  double *aero_rep_float_data =
      &(model_data->aero_rep_float_data
            [model_data->aero_rep_float_indices[aero_rep_idx]]);
  double *aero_rep_env_data =
      &(model_data->grid_cell_aero_rep_env_data
            [model_data->aero_rep_env_idx[aero_rep_idx]]);
 
  // Get the aerosol representation type
  int aero_rep_type = *(aero_rep_int_data++);
 
  // Get the particle number concentration
  switch (aero_rep_type) {
    case AERO_REP_MODAL_BINNED_MASS:
      aero_rep_modal_binned_mass_get_aero_phase_avg_MW__kg_mol(
          model_data, aero_phase_idx, aero_phase_avg_MW, partial_deriv,
          aero_rep_int_data, aero_rep_float_data, aero_rep_env_data);
      break;
    case AERO_REP_SINGLE_PARTICLE:
      aero_rep_single_particle_get_aero_phase_avg_MW__kg_mol(
          model_data, aero_phase_idx, aero_phase_avg_MW, partial_deriv,
          aero_rep_int_data, aero_rep_float_data, aero_rep_env_data);
      break;
  }
}
 
/** \brief Add condensed data to the condensed data block for aerosol
 * representations
 *
 * \param aero_rep_type Aerosol representation type
 * \param n_int_param Number of integer parameters
 * \param n_float_param Number of floating-point parameters
 * \param n_env_param Number of environment-dependent parameters
 * \param int_param Pointer to integer parameter array
 * \param float_param Pointer to floating-point parameter array
 * \param solver_data Pointer to solver data
 */
void aero_rep_add_condensed_data(int aero_rep_type, int n_int_param,
                                 int n_float_param, int n_env_param,
                                 int *int_param, double *float_param,
                                 void *solver_data) {
  ModelData *model_data =
      (ModelData *)&(((SolverData *)solver_data)->model_data);
 
  // Get pointers to the aerosol representation data
  int *aero_rep_int_data =
      &(model_data->aero_rep_int_data
            [model_data->aero_rep_int_indices[model_data->n_added_aero_reps]]);
  double *aero_rep_float_data = &(
      model_data->aero_rep_float_data
          [model_data->aero_rep_float_indices[model_data->n_added_aero_reps]]);
 
  // Save next indices by adding lengths
  model_data->aero_rep_int_indices[model_data->n_added_aero_reps + 1] =
      (n_int_param + 1) +
      model_data
          ->aero_rep_int_indices[model_data->n_added_aero_reps];  //+1 is type
  model_data->aero_rep_float_indices[model_data->n_added_aero_reps + 1] =
      n_float_param +
      model_data->aero_rep_float_indices[model_data->n_added_aero_reps];
  model_data->aero_rep_env_idx[model_data->n_added_aero_reps + 1] =
      model_data->aero_rep_env_idx[model_data->n_added_aero_reps] + n_env_param;
  ++(model_data->n_added_aero_reps);
 
  // Add the aerosol representation type
  *(aero_rep_int_data++) = aero_rep_type;
 
  // Add integer parameters
  for (; n_int_param > 0; --n_int_param)
    *(aero_rep_int_data++) = *(int_param++);
 
  // Add floating-point parameters
  for (; n_float_param > 0; --n_float_param)
    *(aero_rep_float_data++) = (double)*(float_param++);
 
  model_data->n_aero_rep_env_data += n_env_param;
}
 
/** \brief Update aerosol representation data
 *
 * \param cell_id Id of the grid cell to update
 * \param aero_rep_id Aerosol representation id (or 0 if unknown)
 * \param update_aero_rep_type Aerosol representation type to update
 * \param update_data Pointer to data needed for update
 * \param solver_data Pointer to solver data
 */
void aero_rep_update_data(int cell_id, int *aero_rep_id,
                          int update_aero_rep_type, void *update_data,
                          void *solver_data) {
  ModelData *model_data =
      (ModelData *)&(((SolverData *)solver_data)->model_data);
 
  // Point to the environment-dependent data for the grid cell
  model_data->grid_cell_aero_rep_env_data = &(
      model_data->aero_rep_env_data[cell_id * model_data->n_aero_rep_env_data]);
 
  // Get the number of aerosol representations
  int n_aero_rep = model_data->n_aero_rep;
 
  // Loop through the aerosol representations advancing the pointer each time
  for (; (*aero_rep_id) < n_aero_rep; (*aero_rep_id)++) {
    // Get pointers to the aerosol data
    int *aero_rep_int_data =
        &(model_data->aero_rep_int_data
              [model_data->aero_rep_int_indices[*aero_rep_id]]);
    double *aero_rep_float_data =
        &(model_data->aero_rep_float_data
              [model_data->aero_rep_float_indices[*aero_rep_id]]);
    double *aero_rep_env_data =
        &(model_data->grid_cell_aero_rep_env_data
              [model_data->aero_rep_env_idx[*aero_rep_id]]);
 
    // Get the aerosol representation type
    int aero_rep_type = *(aero_rep_int_data++);
 
    bool found = false;
 
    // Find aerosol representations of the correct type
    if (aero_rep_type == update_aero_rep_type) {
      switch (aero_rep_type) {
        case AERO_REP_MODAL_BINNED_MASS:
          found = aero_rep_modal_binned_mass_update_data(
              (void *)update_data, aero_rep_int_data, aero_rep_float_data,
              aero_rep_env_data);
          break;
        case AERO_REP_SINGLE_PARTICLE:
          found = aero_rep_single_particle_update_data(
              (void *)update_data, aero_rep_int_data, aero_rep_float_data,
              aero_rep_env_data);
          break;
      }
      if (found) return;
    }
  }
}
 
/** \brief Print the aerosol representation data
 *
 * \param solver_data Pointer to the solver data
 */
void aero_rep_print_data(void *solver_data) {
  ModelData *model_data =
      (ModelData *)&(((SolverData *)solver_data)->model_data);
 
  // Get the number of aerosol representations
  int n_aero_rep = model_data->n_aero_rep;
 
  printf(
      "\n\nAerosol representation data\n\nnumber of aerosol "
      "representations: %d\n\n",
      n_aero_rep);
 
  // Loop through the aerosol representations advancing the pointer each time
  for (int i_aero_rep = 0; i_aero_rep < n_aero_rep; i_aero_rep++) {
    // Get pointers to the aerosol data
    int *aero_rep_int_data = &(
        model_data
            ->aero_rep_int_data[model_data->aero_rep_int_indices[i_aero_rep]]);
    double *aero_rep_float_data =
        &(model_data->aero_rep_float_data
              [model_data->aero_rep_float_indices[i_aero_rep]]);
 
    // Get the aerosol representation type
    int aero_rep_type = *(aero_rep_int_data++);
 
    // Call the appropriate printing function
    switch (aero_rep_type) {
      case AERO_REP_MODAL_BINNED_MASS:
        aero_rep_modal_binned_mass_print(aero_rep_int_data,
                                         aero_rep_float_data);
        break;
      case AERO_REP_SINGLE_PARTICLE:
        aero_rep_single_particle_print(aero_rep_int_data, aero_rep_float_data);
        break;
    }
  }
  fflush(stdout);
}
 
/** \brief Free an update data object
 *
 * \param update_data Object to free
 */
void aero_rep_free_update_data(void *update_data) { free(update_data); }