tFrac_P.cc - pism - [fork] customized build of PISM, the parallel ice sheet model (tillflux branch)
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       tFrac_P.cc (2553B)
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            1 // Copyright (C) 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 PISM Authors
            2 //
            3 // This file is part of PISM.
            4 //
            5 // PISM is free software; you can redistribute it and/or modify it under the
            6 // terms of the GNU General Public License as published by the Free Software
            7 // Foundation; either version 3 of the License, or (at your option) any later
            8 // version.
            9 //
           10 // PISM is distributed in the hope that it will be useful, but WITHOUT ANY
           11 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
           12 // FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
           13 // details.
           14 //
           15 // You should have received a copy of the GNU General Public License
           16 // along with PISM; if not, write to the Free Software
           17 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
           18 
           19 #include "Frac_P.hh"
           20 
           21 #include "pism/util/ConfigInterface.hh"
           22 #include "pism/coupler/util/ScalarForcing.hh"
           23 
           24 namespace pism {
           25 namespace atmosphere {
           26 
           27 Frac_P::Frac_P(IceGrid::ConstPtr grid, std::shared_ptr<AtmosphereModel> in)
           28   : AtmosphereModel(grid, in) {
           29 
           30   m_forcing.reset(new ScalarForcing(grid->ctx(),
           31                                     "atmosphere.frac_P",
           32                                     "frac_P",
           33                                     "1", "1",
           34                                     "precipitation multiplier, pure fraction"));
           35 
           36   m_precipitation = allocate_precipitation(grid);
           37 }
           38 
           39 Frac_P::~Frac_P() {
           40   // empty
           41 }
           42 
           43 void Frac_P::init_impl(const Geometry &geometry) {
           44   m_input_model->init(geometry);
           45 
           46   m_log->message(2, "* Initializing precipitation forcing using scalar multipliers...\n");
           47 
           48   m_forcing->init();
           49 }
           50 
           51 void Frac_P::init_timeseries_impl(const std::vector<double> &ts) const {
           52   AtmosphereModel::init_timeseries_impl(ts);
           53 
           54   m_offset_values.resize(ts.size());
           55   for (unsigned int k = 0; k < ts.size(); ++k) {
           56     m_offset_values[k] = m_forcing->value(ts[k]);
           57   }
           58 }
           59 
           60 void Frac_P::update_impl(const Geometry &geometry, double t, double dt) {
           61   m_input_model->update(geometry, t, dt);
           62   m_forcing->update(t, dt);
           63 
           64   m_precipitation->copy_from(m_input_model->mean_precipitation());
           65   m_precipitation->scale(m_forcing->value());
           66 }
           67 
           68 const IceModelVec2S& Frac_P::mean_precipitation_impl() const {
           69   return *m_precipitation;
           70 }
           71 
           72 void Frac_P::precip_time_series_impl(int i, int j, std::vector<double> &result) const {
           73   m_input_model->precip_time_series(i, j, result);
           74 
           75   for (unsigned int k = 0; k < m_offset_values.size(); ++k) {
           76     result[k] *= m_offset_values[k];
           77   }
           78 }
           79 
           80 } // end of namespace atmosphere
           81 } // end of namespace pism