09/09/2020 at 12 noon: The sun hasn't come up in San Francisco, due to heavy smoke and ashes blown into the atmosphere by the wild fires up north.
Figure [5]: 09/09/2020 at 12 noon: The sun hasn't come up in San Francisco, due to heavy smoke and ashes blown into the atmosphere by the wild fires up north.
Contact the authors
Latest update: 15-Jun-2026