TY  - JOUR
A1  - Kyba, Christopher C. M.
A1  - Aubé, Martin
A1  - Bará, Salvador
A1  - Bertolo, Andrea
A1  - Bouroussis, Constantinos A.
A1  - Cavazzani, Stefano
A1  - Espey, Brian R.
A1  - Falchi, Fabio
A1  - Gyuk, Geza
A1  - Jechow, Andreas
A1  - Kocifaj, Miroslav
A1  - Kolláth, Zoltán
A1  - Lamphar, Héctor
A1  - Levin, Noam
A1  - Liu, Shengjie
A1  - Miller, Steven D.
A1  - Ortolani, Sergio
A1  - Jason Pun, Chun Shing
A1  - Ribas, Salvador José
A1  - Ruhtz, Thomas
A1  - Sánchez de Miguel, Alejandro
A1  - Schneider, Mathias
A1  - Shrestha, Ranjay Man
A1  - Simoneau, Alexandre
A1  - So, Chu Wing
A1  - Storch, Tobias
A1  - Tong, Kai Pong
A1  - Tuñón, Milagros
A1  - Turnshek, Diane
A1  - Walczak, Ken
A1  - Wang, Jun
A1  - Wang, Zhuosen
A1  - Zhang, Jianglong
T1  - Multiple Angle Observations Would Benefit Visible Band Remote Sensing Using Night Lights
Y1  - 2022-06-22
VL  - 127
IS  - 12
JF  - Journal of Geophysical Research: Atmospheres
DO  - 10.1029/2021JD036382
PB  - 
N2  - The spatial and angular emission patterns of artificial and natural light emitted, scattered, and reflected from the Earth at night are far more complex than those for scattered and reflected solar radiation during daytime. In this commentary, we use examples to show that there is additional information contained in the angular distribution of emitted light. We argue that this information could be used to improve existing remote sensing retrievals based on night lights, and in some cases could make entirely new remote sensing analyses possible. This work will be challenging, so we hope this article will encourage researchers and funding agencies to pursue further study of how multi‐angle views can be analyzed or acquired.
N2  - Plain Language Summary: When satellites take images of Earth, they usually do so from directly above (or as close to it as is reasonably possible). In this comment, we show that for studies that use imagery of Earth at night, it may be beneficial to take several images of the same area at different angles within a short period of time. For example, different types of lights shine in different directions (street lights usually shine down, while video advertisements shine sideways), and tall buildings can block the view of a street from some viewing angles. Additionally, since views from different directions pass through different amounts of air, imagery at multiple angles could be used to obtain information about Earth's atmosphere, and measure artificial and natural night sky brightness. The main point of the paper is to encourage researchers, funding agencies, and space agencies to think about what new possibilities could be achieved in the future with views of night lights at different angles.
N2  - Key Points: Remote sensing using the visible band at night is more complex than during the daytime, especially due to the variety of artificial lights. Views of night lights intentionally taken from multiple angles provide several advantages over near‐nadir or circumstantial view geometries. Night lights remote sensing would benefit from greater consideration of the role viewing geometry plays in the observed radiance.
UR  - http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/10243
ER  -