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.. only:: html

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.. rst-class:: sphx-glr-example-title

.. _sphx_glr_examples_individual_options_plot_option_13_lower_atm_f107.py:


13. MSIS Option 13: Lower Atm F10.7
===================================

This example demonstrates the analysis of MSIS Option 13,
which controls Solar flux effects on lower atmosphere. This option represents a key
physical process that affects atmospheric density variations.

Understanding how this option affects atmospheric structure is important for
atmospheric modeling, satellite operations, and space weather applications.

.. GENERATED FROM PYTHON SOURCE LINES 12-17

.. code-block:: Python


    import matplotlib.pyplot as plt
    from msis_options_utils import create_option_analysis_figure









.. GENERATED FROM PYTHON SOURCE LINES 18-30

Option 13 controls Solar flux effects on lower atmosphere
=========================================================

This atmospheric effect includes:

* Solar flux modulation of lower atmospheric effects
* F10.7-dependent lower atmosphere coupling
* Solar cycle effects on atmospheric layers interaction
* Variable coupling strength with solar activity

This analysis shows how turning OFF this option affects atmospheric density
across different dimensions and conditions.

.. GENERATED FROM PYTHON SOURCE LINES 30-36

.. code-block:: Python


    option_index = 13
    option_name = "Lower Atm F10.7"

    fig = create_option_analysis_figure(option_index, option_name)




.. image-sg:: /examples/individual_options/images/sphx_glr_plot_option_13_lower_atm_f107_001.png
   :alt: Comprehensive Analysis: MSIS Lower Atm F10.7 Option Atmospheric density changes when option is turned OFF F10.7=180, Ap=15, A) Altitude Profiles, B) Geographic Pattern at 300 km, C) Diurnal Cycle at 45°N, 300 km, D) Seasonal Cycle at 45°N, 300 km
   :srcset: /examples/individual_options/images/sphx_glr_plot_option_13_lower_atm_f107_001.png
   :class: sphx-glr-single-img





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Understanding the Results
=========================

**Panel A (Altitude Profiles)**: Shows how this effect varies with altitude
and between different seasonal and diurnal conditions. Look for differences
between the four curves to understand temporal variability.

**Panel B (Geographic Map)**: Reveals the global pattern of this atmospheric
effect. The contour plot shows percentage changes when the option is turned OFF
compared to the baseline (all options ON).

**Panel C (Diurnal Cycle)**: Demonstrates how this effect varies throughout
a 24-hour period at a fixed location (45°N, 0°E, 300 km altitude).

**Panel D (Seasonal Cycle)**: Shows how the strength of this effect
varies throughout the year, revealing seasonal dependencies.

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.. code-block:: Python


    plt.show()








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Physical Importance
===================

This atmospheric effect is important because:

* Links solar activity to atmospheric coupling
* Important for solar cycle atmospheric studies
* Essential for complete solar-atmospheric modeling
* Improves long-term atmospheric predictions

When this option is turned OFF, these physical processes are removed
from the atmospheric model, which can significantly impact the accuracy
of density predictions depending on the specific application and conditions.


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   **Total running time of the script:** (0 minutes 0.763 seconds)


.. _sphx_glr_download_examples_individual_options_plot_option_13_lower_atm_f107.py:

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