Delta_T.cc

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// Copyright (C) 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2021, 2023, 2024, 2025 PISM Authors
//
// This file is part of PISM.
//
// PISM is free software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the Free Software
// Foundation; either version 3 of the License, or (at your option) any later
// version.
//
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
// details.
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#include "pism/coupler/surface/Delta_T.hh"
#include "pism/util/ScalarForcing.hh"
#include "pism/util/Logger.hh"
 
namespace pism {
namespace surface {
 
/// -surface ...,delta_T (scalar forcing of ice surface temperatures)
 
Delta_T::Delta_T(std::shared_ptr<const Grid> g, std::shared_ptr<SurfaceModel> in)
  : SurfaceModel(g, in) {
 
  m_forcing.reset(new ScalarForcing(*g->ctx(),
                                    "surface.delta_T",
                                    "delta_T",
                                    "kelvin",
                                    "kelvin",
                                    "ice-surface temperature offsets"));
 
  m_temperature = allocate_temperature(g);
}
 
Delta_T::~Delta_T() {
  // empty
}
 
void Delta_T::init_impl(const Geometry &geometry) {
  m_input_model->init(geometry);
 
  m_log->message(2,
                 "* Initializing ice-surface temperature forcing using scalar offsets...\n");
}
 
void Delta_T::update_impl(const Geometry &geometry, double t, double dt) {
  m_input_model->update(geometry, t, dt);
 
  m_temperature->copy_from(m_input_model->temperature());
  m_temperature->shift(m_forcing->value(t + 0.5 * dt));
}
 
const array::Scalar &Delta_T::temperature_impl() const {
  return *m_temperature;
}
 
} // end of namespace surface
} // end of namespace pism