Ultraviolet Aurora and Airglow

Ultraviolet Aurora and Airglow PDF Author: Graham Geoffrey O'Conner
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 424

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Ultraviolet Aurora and Airglow

Ultraviolet Aurora and Airglow PDF Author: Graham Geoffrey O'Conner
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 424

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Aurora and Airglow

Aurora and Airglow PDF Author: Billy Murray McCormac
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 712

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Aurorae and Airglow

Aurorae and Airglow PDF Author: Valerʹi︠a︡n Ivanovich Krasovskiĭ
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 102

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Physics of the Aurora and Airglow

Physics of the Aurora and Airglow PDF Author: Joseph Wyan Chamberlain
Publisher:
ISBN:
Category : Auroras
Languages : en
Pages : 732

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Rocket Studies of Far-ultraviolet Radiation in an Aurora

Rocket Studies of Far-ultraviolet Radiation in an Aurora PDF Author: R. E. Miller
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 31

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Polar Bear UV Images of Airglow and Aurora-Data Reduction and Analysis

Polar Bear UV Images of Airglow and Aurora-Data Reduction and Analysis PDF Author: Moshe Tur
Publisher:
ISBN:
Category :
Languages : en
Pages : 37

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The AIRS scanning ultraviolet photometer aboard the Polar Bear satellite was launched in late 1986. It was designed to obtain UV images with high spatial and wavelength resolution at several emission lines simultaneously. The objective of the program is to geometrically and photometrically calibrate the data. The processing is designed to provide kilometer-scaled images that can be projected upon various coordinate systems. These tools afford studies of the spatial and temporal variability of airglow and aurora. Each data-stream from a pass is converted to a 240 x 240 image representing 5000 x 5000km records of intensity. The major progress during the report period has been modification and development of programs to accomplish the following: 1) A Chapman function correction to the solar flux dependence of the intensity, resulting with a successful daytime fit of power unity of above variable to pixel brightness. 2) Separation of night-glow domain to ordinary and continuous (24 hr) night regions. 3) Projection of images onto dipole & corrected geomagnetic coordinate systems. 4) Comparison of auroral arcs with known auroral oval and initiation of a UV oval from input images. Keywords: Aurora; Ultraviolet; Image processing; Airglow. (jhd).

Aurorae and Airglow

Aurorae and Airglow PDF Author: Valerʹi︠a︡n Ivanovich Krasovskiĭ
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 160

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Satellite Atmospheric Radiance Measurements in the Vacuum Ultraviolet

Satellite Atmospheric Radiance Measurements in the Vacuum Ultraviolet PDF Author: Robert E. Huffman
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 48

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A satellite experiment has obtained nadir-viewing atmospheric radiance measurements in the 1100 to 2900 angstrom wavelength region from the polar orbiting satellite S3-4. This report describes the instrumentation, measurement techniques, and initial results. The observed emission is from airglow, solar scatter, and auroral regions. Spectral and spatial measurements previously unavailable have been made for the nitrogen Lyman-Birge-Hopfield emission, vacuum ultraviolet aurora, hydrogen geocorona, tropical ultraviolet airglow, twilight fluorescence nitric oxide spectrum, and night oxygen Herzberg band emission. Low values of the day and night background radiance values have been found; these values can be applied to improved missile detection techniques. Spatial resolution down to about one kilometer will enable possible variability to be sought. Observations were made in the period March to September 1978. Correlations with other geophysical factors such as solar flux, magnetic index, and seasonal variations will be made after the data base from the experiment is completed.

Polar Bear UV Imaging of Airglow and Aurora - Image Processing and Results

Polar Bear UV Imaging of Airglow and Aurora - Image Processing and Results PDF Author: Moshe Tur
Publisher:
ISBN:
Category :
Languages : en
Pages : 67

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In late 1986, AFGL launched the Polar BEAR satellite, which was designed for UV imagery of the northern pole region. The AIRS scanning ultraviolet photometer aboard the satellite provides images of day and night auroral structures of unprecedented spectral and spatial resolution at 2 working spectral windows simultaneously. It is necessary to apply geometric and photometric corrections to the image in order to enhance and map it onto the ionosphere. Furthermore, satellite attitude corrections are imperative to assure that image coordinates are properly rotated to the real-time body reference system. To the best knowledge of the authors, this project is the first one to fully include geometric and photometric corrections to VUV images of the ionosphere. (aw).

Aurora and Airglow

Aurora and Airglow PDF Author: Christian Thomas Elvey
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 10

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