Time variations of solar UV irradiance as measured by the Solstice (UARS) instrument

Julius London; Gary J. Rottman; Thomas N. Woods; Fei Wu

doi:10.1029/93GL01344

Time variations of solar UV irradiance as measured by the Solstice (UARS) instrument

Julius London
, Gary J. Rottman
, Thomas N. Woods
, Fei Wu

ACOM Modeling

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

An analysis is presented of solar ultraviolet irradiance measurements made by the SOLSTICE spectrometers on the Upper Atmosphere Research Satellite (UARS). Reported observations cover the wavelength interval 119–420 nm, and the analysis discussed here is for the time period 26 Nov 1991 to 31 Dec 1992, during which time solar activity decreased in intensity. At the time of peak activity, the average 27‐day variation had a relative amplitude of ∼8% at Ly‐α, tailing off to about 0.6% at 260 nm. It is shown that over the spectral interval 119–260 nm, the relative 27‐day harmonic was about a factor of two larger during the strongly disturbed as compared with the moderately disturbed period.

Original language	English
Pages (from-to)	1315-1318
Number of pages	4
Journal	Geophysical Research Letters
Volume	20
Issue number	12
DOIs	https://doi.org/10.1029/93GL01344
State	Published - Jun 18 1993

Access to Document

10.1029/93GL01344

Cite this

@article{a534cfb3ed70474bbc84197c6463ae93,

title = "Time variations of solar UV irradiance as measured by the Solstice (UARS) instrument",

abstract = "An analysis is presented of solar ultraviolet irradiance measurements made by the SOLSTICE spectrometers on the Upper Atmosphere Research Satellite (UARS). Reported observations cover the wavelength interval 119–420 nm, and the analysis discussed here is for the time period 26 Nov 1991 to 31 Dec 1992, during which time solar activity decreased in intensity. At the time of peak activity, the average 27‐day variation had a relative amplitude of ∼8\% at Ly‐α, tailing off to about 0.6\% at 260 nm. It is shown that over the spectral interval 119–260 nm, the relative 27‐day harmonic was about a factor of two larger during the strongly disturbed as compared with the moderately disturbed period.",

author = "Julius London and Rottman, \{Gary J.\} and Woods, \{Thomas N.\} and Fei Wu",

year = "1993",

month = jun,

day = "18",

doi = "10.1029/93GL01344",

language = "English",

volume = "20",

pages = "1315--1318",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "John Wiley and Sons Inc.",

number = "12",

}

TY - JOUR

T1 - Time variations of solar UV irradiance as measured by the Solstice (UARS) instrument

AU - London, Julius

AU - Rottman, Gary J.

AU - Woods, Thomas N.

AU - Wu, Fei

PY - 1993/6/18

Y1 - 1993/6/18

N2 - An analysis is presented of solar ultraviolet irradiance measurements made by the SOLSTICE spectrometers on the Upper Atmosphere Research Satellite (UARS). Reported observations cover the wavelength interval 119–420 nm, and the analysis discussed here is for the time period 26 Nov 1991 to 31 Dec 1992, during which time solar activity decreased in intensity. At the time of peak activity, the average 27‐day variation had a relative amplitude of ∼8% at Ly‐α, tailing off to about 0.6% at 260 nm. It is shown that over the spectral interval 119–260 nm, the relative 27‐day harmonic was about a factor of two larger during the strongly disturbed as compared with the moderately disturbed period.

AB - An analysis is presented of solar ultraviolet irradiance measurements made by the SOLSTICE spectrometers on the Upper Atmosphere Research Satellite (UARS). Reported observations cover the wavelength interval 119–420 nm, and the analysis discussed here is for the time period 26 Nov 1991 to 31 Dec 1992, during which time solar activity decreased in intensity. At the time of peak activity, the average 27‐day variation had a relative amplitude of ∼8% at Ly‐α, tailing off to about 0.6% at 260 nm. It is shown that over the spectral interval 119–260 nm, the relative 27‐day harmonic was about a factor of two larger during the strongly disturbed as compared with the moderately disturbed period.

UR - https://www.scopus.com/pages/publications/0027804776

U2 - 10.1029/93GL01344

DO - 10.1029/93GL01344

M3 - Article

AN - SCOPUS:0027804776

SN - 0094-8276

VL - 20

SP - 1315

EP - 1318

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 12

ER -

Time variations of solar UV irradiance as measured by the Solstice (UARS) instrument

Abstract

Access to Document

Other files and links

Fingerprint

Cite this