A5020006732- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Climate variability and models
- Atmospheric aerosols and clouds
- Ionosphere and magnetosphere dynamics
- Meteorological Phenomena and Simulations
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Precipitation Measurement and Analysis
- Oceanographic and Atmospheric Processes
- Cryospheric studies and observations
- Geophysics and Gravity Measurements
- Vehicle emissions and performance
- Tropical and Extratropical Cyclones Research
- Calibration and Measurement Techniques
- Complex Systems and Time Series Analysis
- Soil Moisture and Remote Sensing
- Arctic and Antarctic ice dynamics
- Spectroscopy and Laser Applications
- Lightning and Electromagnetic Phenomena
- Chaos control and synchronization
- Solar and Space Plasma Dynamics
- Maritime Transport Emissions and Efficiency
- Safety and Risk Management
Institute of Atmospheric Physics
2016-2025
Chinese Academy of Sciences
2016-2025
University of Chinese Academy of Sciences
2011-2024
Lanzhou University
2021-2024
Chinese University of Hong Kong
2010
Peking University
1998-1999
Osaka Sangyo University
1989
Abstract Satellite observations have shown that the Asian Summer Monsoon strongly influences upper troposphere and lower stratosphere (UTLS) aerosol morphology through its role in formation of Tropopause Aerosol Layer (ATAL). Stratospheric Gas Experiment II solar occultation Cloud‐Aerosol Lidar Infrared Pathfinder Observation (CALIPSO) lidar show summertime UTLS Optical Depth (AOD) between 13 18 km over Asia has increased by three times since late 1990s. Here we present first situ balloon...
Significance Nonvolcanic stratospheric aerosols account for 20% of the radiative forcing entire atmospheric aerosol system since 1850. The Asian summer monsoon (ASM) effectively pumps pollutants to upper troposphere and lower stratosphere, leading enhanced formation. Our in situ measurements combined with modeling work show that formed within ASM anticyclone is exported Northern Hemispheric stratosphere. On an annual average basis, we estimate ∼15% Hemisphere column surface area originates...
Abstract Chemical transport associated with the dynamics of Asian summer monsoon (ASM) system is investigated using model output from National Center for Atmospheric Research (NCAR) Whole Atmosphere Community Climate Model run in specified mode. The 3‐D day‐to‐day behavior modeled carbon monoxide analyzed together dynamical fields and boundaries to identify preferred locations uplifting boundary layer, role subseasonal‐scale upper troposphere lower stratosphere (UTLS), relationship ASM...
Abstract The Tibetan Plateau (TP) impacts local and remote atmospheric circulations, wherein it mechanically thermally affects air masses or airflows. Moreover, the TP provides a key channel for substance transport between troposphere stratosphere. This study reviews recent advances in research regarding land–atmosphere coupling processes over TP. experiences climate warming wetting. Climate has caused glacier retreat, permafrost degradation, general increase vegetation density, while...
Abstract Diurnal and seasonal variation, intensity, structure of deep convective systems (DCSs; with 20-dBZ echo tops exceeding 14 km) over the Tibetan Plateau–South Asian monsoon region from Plateau (TP) to ocean are investigated using yr Tropical Rainfall Measuring Mission (TRMM) data. Four unique regions characterized by different orography selected for comparison, including TP, southern Himalayan front (SHF), South subcontinent (SAS), ocean. DCSs intense (IDCSs; 40-dBZ 10 occur more...
The Asian summer monsoon (ASM) anticyclone circulation system is recognized to be a significant transport pathway for water vapor and pollutants enter the stratosphere. observational evidence, however, largely based on satellite retrievals. We report first coincident in situ measurements of ozone within ASM anticyclone. combined ozonesondes were launched from Kunming, China August 2009 Lhasa, 2010. In total, 11 12 sondes Kunming respectively. present key characteristics these measurements,...
Due to its surrounding strong and deep Asian summer monsoon (ASM) circulation active surface pollutant emissions, pollutants are transported the stratosphere from Tibetan Plateau region, which may have critical impacts on global climate through chemical, microphysical radiative processes. This article reviews major recent advances in research regarding troposphere-stratosphere transport region of Plateau. Since discovery total ozone valley over satellite observations early 1990s, new...
Abstract. Low ozone and high water vapour mixing ratios are common features in the Asian summer monsoon (ASM) anticyclone; however, low values were observed near tropopause over Kunming, China, within ASM using balloon-borne measurements performed during SWOP (sounding vapour, ozone, particle) campaign August 2009 2015. Here, we investigate signatures upper troposphere lower stratosphere (UTLS) FengYun-2D, FengYun-2G, Aura Microwave Limb Sounder (MLS) satellite backward trajectory...
The Hunga Tonga–Hunga Ha’apai (Tonga) injected only small amount of SO2 into the stratosphere, while our analyses Microwave Limb Sounder (MLS) measurements show that a massive water vapor was directly stratosphere by Tonga eruption, which is probably due to its submarine volcanic activity. eruption total 139 ± 8 Tg and resulted in an increase 8.9 0.5% global stratospheric vapor. Analyses also uppermost altitude impacted reached 1 hPa level (~47.6 km). Additionally, maximum hydration region...
The Advanced Geosynchronous Radiation Imager (AGRI) is a mission-critical instrument for the Fengyun series of satellites. AGRI acquires full-disk images every 15 min and views East Asia 5 through 14 spectral bands, enabling detection highly variable aerosol optical depth (AOD). Quantitative retrieval AOD has hitherto been challenging, especially over land. In this study, an algorithm proposed that combines deep learning transfer learning. uses core concepts from both Dark Target (DT) Deep...
Ozonesondes launched from Beijing, China, over a 3 year time period (September 2002 to July 2005) are used evaluate the performance of ozone profile retrievals in upper troposphere and lower stratosphere (UTLS) two new spaceborne instruments, Atmospheric Infrared Sounder (AIRS) on NASA Aqua satellite Microwave Limb (MLS) Aura satellite. Since Global Positioning System sensors (GPSO3) Beijing ozonesondes new, comparisons with simultaneously Vaisala ECC sensors, an ozonesonde climatology...
Abstract The primary goal of this study is to explore the potential for estimating vertical velocity (VV) air from surface stratosphere, using widely available radiosonde and dropsonde data. rise fall rates radiosondes dropsondes, respectively, are a combination VV atmosphere still-air rise–fall rates. calculated basic fluid dynamics characteristics systems. This validates technique derive data demonstrates its value. can be easily implemented by other users various scientific applications....
We present a method of identifying the tropical tropopause transition layer (TTL) using chemical tracer-tracer relationships. Coincident ozone (O3) and water vapor (H2O) measurements over Alajuela, Costa Rica (~10°N), in July August 2007 are used to demonstrate concept. In space, O3 H2O relationship helps separate air mass from background troposphere stratosphere. This tracer relationship-based is found span an approximately 40 K potential temperature range between 340 380 largely confined...
Abstract. We use the global three-dimensional Goddard Earth Observing System chemical transport model (GEOS-Chem) to examine contribution of nitrate aerosol concentrations in upper troposphere and lower stratosphere (UTLS) over Tibetan Plateau South Asian summer monsoon (TP/SASM) region during summertime year 2005. Simulated surface-layer are compared with ground-based observations, simulated aerosols UTLS evaluated by using Stratospheric Aerosol Gas Experiment II satellite data. Simulations...
Abstract Entrainment‐mixing mechanisms significantly affect cloud droplet number concentration, radius, and spectral shape. Quantitative examination of entrainment‐mixing effects on width is lacking. This study examines the processes microphysics by 12,218 different setups, each simulated 10 times using Explicit Mixing Parcel Model (EMPM) driven observational data from Third Tibetan Plateau Atmospheric Scientific Experiment (TIPEX‐III) campaign. Parameterizations are developed relating...
Abstract Ozonesonde launches were routinely performed in Beijing from March 2001 to February 2019 generate a unique long-term (18 years) vertical ozone profile dataset over mainland China. This study elucidates the structure on various temporal scales during this 18 years period by using entire ozonesonde data product for first time. Moreover, variability integrated column North China Plain (NCP) is also explored comparing retrievals at urban site and Dobson spectrometer Xianghe suburban...
Efficiently delivering large quantities of climate intervention material (CIM) to the stratosphere remains a technical challenge in stratospheric aerosol injection (SAI). A novel approach, solar-powered lofting (SPL), mimics natural ascent wildfire smoke, using small amounts black carbon (BC) transport SO2 from troposphere stratosphere. The Asian Summer Monsoon(ASM) anticyclone over Tibetan Plateau can also aerosols into stratosphere, acting as “chimney”. In this study,...
Tropopause chemical structure (TCS) is influenced by the stratosphere-troposphere exchange (STE) and plays a role in Earth’s climate. Yet, this still not fully resolved East Asia where active STE high anthropogenic emissions coexist. Using airborne measurements of trace gases including O3, CO H2O, we reveal variations TCS during two consecutive cut-off lows (COL), an important trigger STE. We demonstrate roles two-way long-range transport processes delivering natural signatures...