CHEMICAL MODELING OF THE QUIET SUMMER D-REGIONS AND E-REGIONS USING EISCAT ELECTRON-DENSITY PROFILES

被引：31

作者：

BURNS, CJ ^{[1
]}

TURUNEN, E ^{[1
]}

MATVEINEN, H ^{[1
]}

RANTA, H ^{[1
]}

HARGREAVES, JK ^{[1
]}

机构：

[1] GEOPHYS OBSERV,SF-99600 SODANKYLA,FINLAND

来源：

JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS | 1991年 / 53卷 / 1-2期

关键词：

D O I：

10.1016/0021-9169(91)90026-4

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Electron density profiles measured by the EISCAT UHF and VHF radars during summer are used as constraints for chemical modelling of the quiet D- and E-regions. Two ion chemical models are used: (1) the Mitra-Rowe simplified 6-ion model (Mitra and Rowe, 1972, J. atmos. terr. Phys. 34, 795), and (2) a 35-ion model developed at the Sodankyla Geophysical Observatory. The modelling strategy involves adjustment of the solar flux to obtain a fit at E-region altitudes, followed by adjustment of the nitric oxide profile for further improvement at all altitudes. Keeping the same model inputs, the effect of a change in solar zenith angle chi is then compared with observations. Good agreement is seen between the final models and observations over the altitude range 80-110 km. The derived nitric oxide profiles resemble those observed at disturbed times by other means, peak concentrations being just less than 2.0 x 10(9) cm-3. These high concentrations could be due to an enhancement of thermospheric nitric oxide by energetic particle precipitation in the morning sector.

引用

页码：115 / 134

页数：20

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