A5074143310- Planetary Science and Exploration
- Astro and Planetary Science
- Space Exploration and Technology
- Scientific Research and Discoveries
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Space Science and Extraterrestrial Life
- Advanced Power Generation Technologies
- Atmospheric chemistry and aerosols
- Geology and Paleoclimatology Research
- Spaceflight effects on biology
- Solar and Space Plasma Dynamics
- Integrated Energy Systems Optimization
Technical University of Denmark
2024
National University of Defense Technology
2023-2024
Chongqing University
2023
Sun Yat-sen University
2020-2022
Venus has recently garnered significant attention with the approval of three new missions: EnVision (ESA), DAVINCI+ (NASA), and VERITAS (NASA). Among most important features Venus, its thick clouds play a crucial role in regulating current environment, influencing mission planning, affecting planetary evolution habitability. The sulfuric acid are governed by sulfur cycle, which exhibits considerable spatial temporal variations remains largely unknown. Furthermore, chemical models treat as...
The current Venus climate is largely regulated by globally-covered concentrated sulfuric acid clouds from binary condensation of (H2SO4) and water (H2O). To understand this complicated H2SO4-H2O gas-cloud system, previous theoretical studies either adopted microphysical calculations or assumed that both H2SO4 H2O vapor follow their saturation pressure. In study, we developed a simple one-dimensional cloud model including condensation, diffusion sedimentation but without detailed...
Atmospheric chemistry plays a crucial role in the evolution of climate habitability on Venus. It has been widely explored by chemistry-transport models, but some characteristics are still poorly interpreted. This study is devoted to developing an open-access model spanning both middle and lower atmospheres provides scheme for structure chemistry, especially sulfur oxygen, investigates influence cloud diffusivity SO 2 dissolution that adopted clouds. The developed based VULCAN framework was...
Doubly charged positive ions (dications) are an important component of planetary ionospheres because the large energy required for their formation. Observations these exceptionally difficult due to low abundances; until now, only atomic dications have been detected. The Neutral Gas and Ion Mass Spectrometer (NGIMS) measurements made on board recent Mars Atmosphere Volatile Evolution mission provide first opportunity decisive detection molecular dications, CO<sub>2</sub><sup>++</sup> in this...
Context. The vertical eddy diffusion coefficient ( K zz ) characterizing the efficiency of atmospheric mixing is essential for 1D planetary modeling, but poorly constrained in Venusian clouds, where our ability to observe tracer gases limited. clouds are mainly composed H 2 SO 4 , which has significant mass cycles this region. A critical process herein that vapor abundance middle and lower Venus regulated by both condensation processes. Aims. This study devoted proposing a novel approach...
Abstract In the absence of solar radiation, precipitating electrons from wind (SW) are generally thought to be dominant source energy deposition in nightside Martian upper atmosphere, creating a patchy ionosphere and possibly also affecting thermal budget various neutral ionized species. Previous model calculations have not taken into account situ heating via SW electron impact. present study, we utilize extensive measurements made by several instruments on board Mars Atmosphere Volatile...
Venus has regained great interest from planetary scientists in recent years because of the multiple upcoming missions (e.g., EnVision, DAVINCI+ and VERITAS). Studying is crucial for understanding evolution terrestrial planets as well projecting Earth&#8217;s future. One important component climate system, sulfuric acid clouds, exhibited spatial temporal variabilities. These variabilities are closely connected with interactions between dynamics, photochemistry, radiative transfer cloud...
Abstract The clouds have a great impact on Venus's energy budget and climate evolution, but its three‐dimensional structure is still not well understood. Here we incorporate simple Venus cloud physics scheme into flexible GCM to investigate the spatial variability. Our simulations show good agreement with observations in terms of vertical profiles H 2 SO 4 vapor. O vapor overestimated above due efficient transport region. top decreases as latitude increases, qualitatively consistent Express...
The Venusian clouds originate from the binary condensation of H$_{2}$SO$_{4}$ and H$_{2}$O. two components strongly interact with each other via chemistry cloud formation. Previous works adopted sophisticated microphysical approaches to understand clouds. Here we show that observed vapor distributions on Venus can be well explained by a semi-analytical model. Our model assumes local thermodynamical equilibrium for water but not sulfuric acid vapor, includes feedback acidity distributions....
Clean heating can mitigate pollution issues in northern China, and affordable cost stable power supply are keys to promoting clean heating. However, most existing studies evaluate from the micro-level perspective, while regional evaluation of energy resident economic affordability after a large-scale clean-heating application has rarely been studied. This study proposed suitability-evaluation framework assess for ASHP rural areas. Based on scenario analyses, results showed that gradually...
Solar Wind (SW) electron precipitation is able to deposit a substantial amount of energy in the nightside Martian upper atmosphere, potentially exerting an influence on its thermal structure. This study serves as first investigation such issue, with aid simultaneous measurements both neutral density and energetic intensity made board recent Mars Atmosphere Volatile Evolution (MAVEN) spacecraft. We report that, from statistical point view, existing do not support scenario noticeable heating...