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"# Advanced Aerosol Database: Crystalline Aerosol Directionality and Temperature Dependence \n",
"\n",
"Crystalline aerosols, which are expected to form in hot environments (like hot Jupiter atmospheres) have three properties that make them distinct from amorphous aerosols.\n",
"\n",
"1. They have sharper absorption features\n",
"2. Their absorption features are much more sensitive to changes in temperature \n",
"3. They are largely anisotropic, meaning that the ways in which they absorb incident light depends on their orientation relative to it. \n",
"\n",
"The alignment of crystalline aerosols in planetary atmospheres can produce a myriad of spectacular optical phenomena due to their interaction with light. As hexagonal ice crystals fall throughout Earth's atmosphere they align horizontally, generating subsuns and light pillars through reflection and sundogs through refraction. Parhelic circles form in the rare case of reflective vertically aligned crystals, while the 22 degree halo is due to randomly oriented refractive crystals. Crown flashes form when ice crystals orient themselves with the electric field above thunderclouds. These optical phenomena are not only beautiful, but are also a powerful diagnostic of the local atmospheric processes where the crystals form. \n",
"\n",
"In this notebook, we explore how to generate forward models for directional dependent crystalline, mineral aerosols that are expected to form in hot Jupiter and brown dwarf environments. \n",
"\n",
"For this notebook, you will need to download: `aerosol_directional_database.hdf5`, and place in ``inputs/opacity``.\n",
"\n",
"This notebook assumes knowledge of aerosol_database.ipynb, transmission_clouds.ipynb, and also the thermal scattering/reflection notebooks.\n",
"\n",
"For more details, see Mullens & Lewis 2025 (in press)."
]
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"
\n",
"\n",
"(Source: Figure 1 from Mullens & Lewis 2025 (in press).)"
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"