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.

将通过观测和数值模拟的详细比较，研究太阳变化通过高能粒子相互作用引起的氮氧化物变化和太阳紫外线通量变化对平流层臭氧的影响。ENVISAT卫星上的MIPAS仪器提供了光谱辐射测量的独特记录，该卫星覆盖全球平流层下部直至中间层下部，特别是极地夜间区域。其运行的头两年包括各种太阳活动阶段，包括2003年10月的太阳风暴。根据这些观测结果，将研究由太阳活动产生的氮氧化物与中间层示踪物CO、H2 O和CH4的向下输送。此外，NOy，ClOx物种和臭氧的观测将允许研究增加NOx值的化学效应，特别是对臭氧消耗，以及它们对NOy预算的贡献。将用观测到的低层中层氮氧化物和示踪物对CLaMS和KASIMA模型进行初始化，并将研究向下的输送和混合过程，特别是在极涡中。这允许通过与N2O光解相比的颗粒相互作用来估计NOx的产生。将利用光谱分辨的太阳紫外线数据，用KASIMA模型确定太阳紫外线可变性的影响，并验证其光化学反应。该项目的成果将有助于用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