Advanced mesospheric temperature mapper for high-latitude airglow studies
| Autor: | Yucheng Zhao, William R. Pendleton, Michael J. Taylor, Roy W. Esplin, Pierre-Dominique Pautet, Tao Yuan, David McLain |
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| Rok vydání: | 2014 |
| Předmět: |
high-latitude airglow studeis
010504 meteorology & atmospheric sciences Spectrometer Meteorology Wave propagation Airglow mesospheric temperature mapper Field of view 01 natural sciences Inertial wave Atomic and Molecular Physics and Optics Lidar 13. Climate action Temporal resolution 0103 physical sciences Environmental science Electrical and Electronic Engineering 010303 astronomy & astrophysics Engineering (miscellaneous) Atmospheric optics 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | Space Dynamics Lab Publications |
| ISSN: | 2155-3165 1559-128X |
| DOI: | 10.1364/ao.53.005934 |
| Popis: | Over the past 60 years, ground-based remote sensing measurements of the Earth's mesospheric temperature have been performed using the nighttime hydroxyl (OH) emission, which originates at an altitude of ∼87 km. Several types of instruments have been employed to date: spectrometers, Fabry-Perot or Michelson interferometers, scanning-radiometers, and more recently temperature mappers. Most of them measure the mesospheric temperature in a few sample directions and/or with a limited temporal resolution, restricting their research capabilities to the investigation of larger-scale perturbations such as inertial waves, tides, or planetary waves. The Advanced Mesospheric Temperature Mapper (AMTM) is a novel infrared digital imaging system that measures selected emission lines in the mesospheric OH (3,1) band (at ∼1.5 μm) to create intensity and temperature maps of the mesosphere around 87 km. The data are obtained with an unprecedented spatial (∼0.5 km) and temporal (typically 30″) resolution over a large 120° field of view, allowing detailed measurements of wave propagation and dissipation at the ∼87 km level, even in the presence of strong aurora or under full moon conditions. This paper describes the AMTM characteristics, compares measured temperatures with values obtained by a collocated Na lidar instrument, and presents several examples of temperature maps and nightly keogram representations to illustrate the excellent capabilities of this new instrument. |
| Databáze: | OpenAIRE |
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