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Effects of gravity waves on the distributions of O_3.and OH in the mesopause region

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Chinese Science Bulletin 2001年第15期46卷 1265-1268页

作者： XU Jiyao & MA Ruipinglaboratory for Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, beijing 100080, china {3., Chinese Academy of Sciences, beijing 100080, china laboratory for Space Weather Center for Space Science and Applied Research Chinese Academy of Sciences Beijing China laboratory of numeric study of heliospheric physics Chinese Academy of Sciences Beijing China

A dynamical-photochemical model of atmospheric gravity waves is used to study the influences of gravity waves on distributions of atmospheric minor species through transportation and photochemical reactions. We mainly study the effect of gravity waves on the distributions of atmospheric trace gases through the nonlinear photochemical reactions. O3.and OH are taken as examples in this note. The calculations indicate that the effect of gravity waves on the distributions of atmospheric trace gases is mainly through the nonlinear photochemical reactions in the mesopause region. The contribution of the nonlinear photochemical reaction caused by gravity waves can exceed the nonlinear transportation and the eddy diffusion.

关键词： gravity wave photochemical reaction coupling between photochemistry and dynamics.

An empirical method to correct the saturation seen in the SOHO/MDI magnetograms

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Research in Astronomy and Astrophysics 2010年第10期10卷 1041-1048页

作者： George Zhendong Gao Yong-Heng Zhao Yang Liu National Astronomical Observatories of china Chinese Academy of Sciences Beijing 100012 China W. W. Hansen Experimental physics laboratory Stanford University Stanford CA 94305-4085 USA

The magnetic field of the umbrae is sometimes found to be saturated in the magnetograms taken by the Michelson Doppler Imager （MDI） onboard the Solar and heliospheric Observatory （SOHO）. It is suggested that the combination of the low intensity of sunspot umbrae and the limitation of the 15-bit onboard numerical data acquisition leads to this saturation. In this paper, we propose to use the MDI＇s intensity data to correct this saturation. This method is based on the well-established relationship between the continuum intensity and the magnetic field （the so-called I-B relationship）. A comparison between the corrected magnetic field and the data taken by the Stokes-Polarimeter of the Solar Optical Telescope （SOT/SP） onboard Hinode shows a reasonable agreement, suggesting that this correction is effective.

关键词： Sun solar magnetic field -- Sun MDI magnetograms -- Sun Saturation

流体力学与行星际物理学中激波动力学问题求解新论

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吉首大学学报 1999年第3期20卷 1-8页

作者：冯学尚魏奉思中科院日球物理数值开放研究实验室空间科学与应用研究中心北京100080

针对激波问题的求解 ,深入研究了流场及其导数跨跃激波面的跃变应满足的关系 ,其结果是得到联系激波前后流场与激波速度、方向的无穷维动力学系统 ,它实质上是反映激波全部信息的激波前后物理量空间导数与激波速度、方向的相容性关系 ,... 详细信息

针对激波问题的求解 ,深入研究了流场及其导数跨跃激波面的跃变应满足的关系 ,其结果是得到联系激波前后流场与激波速度、方向的无穷维动力学系统 ,它实质上是反映激波全部信息的激波前后物理量空间导数与激波速度、方向的相容性关系 ,可以称为广义Rankine -Hugoniot跃变条件 ,有望为流体力学。

关键词：激波动力学流体力学行星际物理 R-H跃变条件

一类耦合非线性波相互作用模型初值问题解的全局适定性

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吉首大学学报 1996年第1期17卷 8-15页

作者：冯学尚王连圭中科院日球物理数值开放研究实验室北京100080 吉首大学物理系湖南吉首416000

本文利用Banach不动点原理对Hirota与Satsuma提出的一类耦合非线性波相互作用模型之初值问题进行了讨论，得到其解在Hs（R）XHs（R），S≥1，中的全局运定性。

关键词：不动点原理全局适定性非线性波模型初值问题

THE SOLAR CYCLE VARIATIONS OF BACKGROUND AND DISTURBED SOLAR WINDS——THE BASIC QUANTITIES AND FLUX DENSITIES

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Chinese Science Bulletin 1987年第14期32卷 968-972页

作者：章公亮徐元芳 Institute of Space physics Academia Sinica Beijing Institute of Geophysics Academia Sinica Beijing

The heliospheric quantities undergo two kinds of solar cycle variation near the earth’s orbit. The first one is the coronal-hale cycle variation that determines the output of mass, kinetic and thermal energies of solar wind particles. During the year of the longest lifetime of the coronal structure, the flux densities as well as kinetic and internal energy densities. of solar wind reached their maxima, and the large amount of mass, kinetic and

关键词： maxima SOLAR quantities lifetime cycle orbit quiet winds distinguish disturbed

THE SOLAR CYCLE VARIATION OF BACKGROUND AND DISTURBED SOLAR WIND (Ⅱ)——SONIC SPEEDS AND DIMENSIONLESS QUANTITIES

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Chinese Science Bulletin 1989年第12期34卷 1023-1026页

作者：章公亮徐元芳 Institute of Space physics Academia Sinica Beijing Institute of Geophysics Academia Sinica Beijing

The heliospheric basic quantities, particle and energy densities and flux densities undergo two kinds of solar cycle variation, i.e. the sunspot and the coronal cycle variation, the latter being characterized by the life time of coronal structure L_*** 1 shows that the disturbed solar wind is a kind of high speed stream with lower Mach numbers, while the quiet solar wind a low speed flow with higher

关键词： solar wind solar cycle variation quiet solar wind disturbed solar wind Solar-Terrestrial physics.

heliospheric MAGNETIC PARAMETERS AND SOLAR ACTIVITY

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Science in china,Ser.A 1985年第10期 1081-1089页

作者：章公亮徐元芳高玉芬陆晨 Institute of Space physics Academia Sinica beijing Institute of Geophysics State Bureau of Seismology

The response of heliospheric quantities to the solar phenomena is discussed in this paper from a statistical point of view. An important result obtained is that the magnetic parameters defined by some combinations of the heliosperic quantities including magnetic field intensity are the physical characteristics that measure, distinguish or identify the influence of various solar phenomena on the heliospherie. Among these magnetic parameters the ratio of the magnetic to thermal pressure μp is one of the heliospheric characteristics that measures the influence of sunspot activity, distinguishes especially the influence exerted by the major flare activity, but also identifies the predecessor in the ascending and maximum phases for the region with a stable high-speed stream from cornal hole in the post-maximum phases. The magnetic sonic speed Cas possesses a considerably stable helio-longitudinal distribution in all the phases of the solar cycle, which implies a common feature for the region with a magn

关键词： heliospheric MAGNETIC PARAMETERS AND SOLAR ACTIVITY

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行星际闪烁(IPS)研究新进展

天文学进展 2000年第3期18卷 209-215页

作者：马振国张喜镇韩文焌中国科学院空间科学与应用研究中心北京100080 中国科学院国家天文观测中心北京100012

太阳风行星际闪烁（ｉｎｔｅｒｐｌａｎｅｔａｒｙｓｃｉｎｔｉｌｌａｔｉｏｎ，ＩＰＳ）研究在太阳物理、日地空间物理和空间天气学研究中具有重要科学意义。经过近３０年重点研究太阳风后，从９０年代初开始，ＩＰＳ研究在太阳风与... 详细信息

太阳风行星际闪烁（ｉｎｔｅｒｐｌａｎｅｔａｒｙｓｃｉｎｔｉｌｌａｔｉｏｎ，ＩＰＳ）研究在太阳物理、日地空间物理和空间天气学研究中具有重要科学意义。经过近３０年重点研究太阳风后，从９０年代初开始，ＩＰＳ研究在太阳风与日球观测的对比分析、行星际扰动与地磁活动预报、观测数据的层析分析三方面都取得了新的进展。

关键词：太阳太阳风行星际闪烁观测