Middle Atmosphere NOx variations and solar UV VAriability: Examples to study mesospheric/stratospheric coupling and the impact of solar variability on stratospheric ozone

中层大气氮氧化物变化和太阳紫外线变化：研究中层/平流层耦合以及太阳变化对平流层臭氧影响的示例

• 批准号: 5454135
• 负责人: Dr. Paul Konopka
• 金额: --
• 依托单位: IEK-7: Stratosphäre
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2006-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5454135?language=en
• 关键词: Middle; Atmosphere; NOx; variations; solar

The impact of solar variability on stratospheric ozone through NOx variations caused by energetic particle interaction and variations of the solar UV flux will be studied by detailed comparisons of observations and numerical simulations. A unique record of spectral radiance measurements has been provided by the instrument MIPAS on-board the ENVISAT satellite which cover the lower stratosphere up to the lower mesosphere globally and, in particular the polar night regions. The first two years of its operation encompassed phases of varying solar activity including the solar storm in October 2003. From these observations, the downward transport of NOx produced by solar activity together with mesospheric tracers as CO, H2 O and CH4 will be studied. Moreover, NOy, ClOx species and ozone from the observations will allow to study the chemical effect of increased NOx values, especially on ozone depletion, and their contribution to the NOy budget. The models CLaMS and KASIMA will be initialized with observed lower mesospheric NOx and tracers, and the downward transport and mixing processes will be studied, in particular in the polar vortices. This allows to estimate the NOx production via particle interaction compared to N2O photolysis. Using spectrally resolved solar UV data, the effects of solar UV variability will be identified with the KASIMA model and its photochemical response will be validated. The outcome of the project will help to validate solar cycle studies with climate models.

太阳变异性通过通过高能粒子相互作用引起的NOx变化和太阳紫外线变化引起的变异的影响将通过观测和数值模拟的详细比较来研究。仪器MIPA在板载卫星上提供了光谱辐射测量的独特记录，该仪表板覆盖了全球下层平流层的下层平流层，尤其是极性夜间区域。其操作的前两年涵盖了不同太阳活动的阶段，包括2003年10月的太阳风暴。从这些观察结果中，将研究由太阳能活动产生的NOX与中层示踪剂作为CO，H2 O和CH4产生的NOX的向下运输。此外，从观察结果中，Noy，Clox物种和臭氧将允许研究NOX值增加的化学作用，尤其是对臭氧耗竭及其对NOY预算的贡献。这些模型蛤和Kasima将使用观察到的较低的中层NOX和示踪剂初始化，并且将研究向下的传输和混合过程，特别是在极性涡旋中。与N2O光解相比，这可以通过颗粒相互作用估算NOx的产生。使用频谱分辨的太阳紫外线数据，将使用Kasima模型确定太阳能UV变异性的效果，并将验证其光化学响应。该项目的结果将有助于通过气候模型验证太阳周期研究。

项目成果

The influence of energetic particles on the chemistry of the middle atmosphere - the MANUXOVA project

高能粒子对中层大气化学的影响 - MANUXOVA 项目

• DOI: 10.1007/978-94-007-4348-9_15
• 发表时间: 2013
• 作者: Reddmann;Konopka;Stiller;Versick; Vogel
• 通讯作者: Vogel

Model simulations of stratospheric ozone loss caused by enhanced mesospheric NO x during Arctic Winter 2003/2004

• DOI: 10.5194/acp-8-5279-2008
• 发表时间: 2008-09
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: B. Vogel;P. Konopka;J. Grooß;Ralph Müller;B. Funke;M. López‐Puertas;T. Reddmann;G. Stiller;T. Clarmann;M. Riese