A5058053633- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Climate variability and models
- Air Quality and Health Impacts
- Aeolian processes and effects
- Atmospheric and Environmental Gas Dynamics
- Meteorological Phenomena and Simulations
- Geophysics and Gravity Measurements
- Maritime Transport Emissions and Efficiency
- Flood Risk Assessment and Management
- Geology and Paleoclimatology Research
- Plant Water Relations and Carbon Dynamics
- Transboundary Water Resource Management
- Impact of Light on Environment and Health
- Urban Heat Island Mitigation
- Fire effects on ecosystems
- Ocean Acidification Effects and Responses
- COVID-19 impact on air quality
- Marine and coastal ecosystems
- Sustainable Development and Environmental Policy
- Geological and Geophysical Studies
- Radioactivity and Radon Measurements
- Tropical and Extratropical Cyclones Research
- Paleontology and Stratigraphy of Fossils
University of Kansas
2019-2024
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2023
Sun Yat-sen University
2023
Northwest Institute of Eco-Environment and Resources
2023
Chinese Academy of Sciences
2023
University of Science and Technology of China
2023
Lanzhou University
2023
Cornell University
2019-2020
Massachusetts Institute of Technology
2016-2019
The University of Texas at Austin
2013-2018
Abstract Improved knowledge of glacial-to-interglacial global temperature change yields Charney (fast-feedback) equilibrium climate sensitivity 1.2 ± 0.3°C (2σ) per W/m2, which is 4.8°C 1.2°C for doubled CO2. Consistent analysis over the full Cenozoic era—including ‘slow’ feedbacks by ice sheets and trace gases—supports this implies that CO2 was 300–350 ppm in Pliocene about 450 at transition to a nearly ice-free planet, exposing unrealistic lethargy sheet models. Equilibrium warming today’s...
Using observational and reanalyses data, we investigated the impact of dust aerosols over Middle East Arabian Sea (AS) on Indian summer monsoon (ISM) rainfall. Satellite aerosol reanalysis data show extremely heavy loading, mainly mineral dust, AS during ISM season. Multivariate empirical orthogonal function analyses suggest an aerosol-monsoon connection. This connection may be attributed to dust-induced atmospheric heating centered Iranian Plateau (IP), which enhances meridional thermal...
Abstract. The response of the Indian summer monsoon (ISM) circulation and precipitation to Middle East dust aerosols on sub-seasonal timescales is studied using observations Weather Research Forecasting model coupled with online chemistry (WRF-Chem). Satellite data show that ISM rainfall in coastal southwest India, central northern Pakistan closely associated aerosols. physical mechanism behind this dust–ISM connection examined through ensemble simulations without emissions. Each includes 16...
The Indian summer monsoon (ISM) is one of the world's strongest systems that brings about eighty percent annual rainfall to subcontinent and impacts livelihood more than a quarter population. Meanwhile, Asia second largest dust source—with major deserts in Middle East, Central East Asia. interactions between Asian ISM have received increasing attention recent decades. Dust particles can modulate circulation precipitation through absorption solar terrestrial radiation when suspending...
Abstract The seasonal responses of the Indian summer monsoon (ISM) to dust aerosols in local (the Thar Desert) and remote Middle East western China) regions are studied using WRF Model coupled with online chemistry (WRF-Chem). Ensemble experiments designed by perturbing model physical chemical schemes examine uncertainties parameterizations. results show that dust-induced increase ISM total rainfall can be attributed East, while contributions from very limited. Convective shows a spatially...
Abstract Satellite observations show high aerosol loadings over the Arabian Sea in boreal summer, which have great impacts on Indian monsoon due to absorbing dust aerosols. However, compositions, origins, transport pathways, and decadal trends of these aerosols not been well studied. In this study, using multiple satellite retrievals, a back trajectory model, reanalysis data, we found that (1) optical depth (AOD) Peninsula summer peak dominate AOD; data tend considerably underestimate AOD...
Abstract High concentrations of dust can affect climate and human health, yet our understanding extreme events is still limited. A record-breaking trans-Atlantic African plume occurred during 14–28 June 2020, greatly degrading air quality over large areas the Caribbean Basin United States. Daily PM 2.5 exceeded 50 µ g m −3 in several Gulf States, while index reached unhealthy levels for sensitive groups more than 11 states. The magnitude duration aerosol optical depth tropical North Atlantic...
The post-1980 regional climate change increased dust AOD by +12.5 ± 15.0% and +43.6 31.2% over the source downstream areas respectively during a record-breaking storm in March 2021 North China.
The trends of both rainfall and circulation strength the Indian summer monsoon has been reviving since 2002. Here, using observational data, we demonstrate a statistically significant greening over Northwest Subcontinent consequent decline in dust abundance due to revival. enhanced monsoonal causes an increase soil moisture, which results Subcontinent. These increases rainfall, vegetation together lead substantial reduction this region, especially Thar Desert, as shown by negative trend...
Abstract. Mineral dust plays an important role in the climate of Tibetan Plateau (TP) by modifying radiation budget, cloud macro- and microphysics, precipitation, snow albedo. Meanwhile, TP, with highest topography world, can affect intercontinental transport plumes induce typical distribution characteristics at different altitudes. In this study, we conduct a quasi-global simulation to investigate source contribution over TP altitudes using fully coupled meteorology–chemistry model, Weather...
Abstract. Utilizing the well-calibrated, high-spectral-resolution equal-quality performance of daytime and nighttime (09:30 21:30 local solar Equator-crossing time (local ECT)) products Infrared Atmospheric Sounder Interferometer (IASI) from Laboratoire de Météorologie Dynamique (LMD), this study investigates day–night differences in dust aerosols over global belt North Africa, Middle East, Asia. Both optical depth (DOD) DOD at 10 µm show high consistency with lunar observations coarse-mode...
Aerosol pollution is an acute environmental issue in developing countries. Asia has been experiencing rapid changes anthropogenic aerosols during the past two decades due to fast growth population and economy. It still open question how aerosol loadings, represented by optical depth (AOD), have evolved this century, particularly decade when China India implemented a clean air act aiming improve quality. Based on Terra retrievals reanalysis, change point of AOD trend detected at 2010 East...
The Aral Sea basin (ASB) is one of the most environmentally vulnerable regions to climate change and human activities. During past 60 years, irrigation has greatly changed water distribution caused severe environmental issues in ASB. Using remote sensing data, this study investigated changes induced by activities region. results show that, decade, land storage significantly increased irrigated upstream (13 km3 year−1) but decreased downstream (−27 Amu Darya River basin, causing a decrease...
Abstract The absorptive properties of dust aerosols largely determine the magnitude their radiative impacts on climate system. Currently, models use globally constant values imaginary refractive index (IRI), a parameter describing absorption efficiency solar radiation, although it is highly variable. Here we show with model experiments that dust-induced Indian summer monsoon (ISM) rainfall differences (with minus without dust) change from −9% to 23% long-term climatology as IRI changed zero...
Abstract. Aerosols in the middle and upper troposphere have a long enough lifetime for trans-Pacific transport from East Asia to North America influence air quality on west coast of United States (US). Here, we conduct quasi-global simulations (180∘ W–180∘ E 70∘ S–75∘ N) 2010 2014 using an updated version WRF-Chem (Weather Research Forecasting model fully coupled with chemistry) analyze spatiotemporal characteristics source contributions aerosol transport. We find that total aerosols maximum...
Abstract. International shipping emissions (ISE), particularly sulfur dioxide, can influence the global radiation budget by interacting with clouds and after being oxidized into sulfate aerosols. A better understanding of uncertainties in estimating cloud radiative effects (CREs) ISE is great importance climate science. Many international tracks cover oceans substantial natural dimethyl sulfide (DMS) emissions. The interplay between these two major aerosol sources on CREs over vast oceanic...
Abstract. Each summer, the Saharan Air Layer (SAL) transports massive amounts of mineral dust across Atlantic Ocean, affecting weather, climate, and public health over large areas. Despite considerable impacts African dust, causes extreme trans-Atlantic events are not fully understood. The “Godzilla” event 2020 has been extensively studied, but little is known about other similar events. Here, we examine June 2015 event, second strongest that occurred during summers from 2003–2022....
Abstract Since winter 2011, a record‐breaking drought has occurred in California. Studies found that the is mainly caused by persistent high‐pressure system off U.S. West Coast, which linked to Pacific sea surface temperature anomalies. The water cycles associated with droughts and floods are still not clearly understood. Here we show atmospheric circulation Coast only controls convergence formation of precipitation but also largely determines wind speed, further affects evaporation over...
Abstract California is one of the nation’s top agriculture producers and vulnerable to extreme events such as droughts heat waves. Concurrent may further stress water energy resources, exerting greater adverse socioeconomic, environmental, health impacts than individual events. Here we examine features compound drought, wave, dust in during spring summer. From 2003 2020, 16 are found warm seasons, with a mean duration ∼4 days. Compound characterized by enhanced surface temperature up 4.5°C...
Abstract Mean magnitudes and temporal trends in aerosol optical depth (AOD) from satellite observations an reanalysis exhibit a negative‐positive east‐northwest dipole across the contiguous United States with large magnitude negative over eastern while small positive northwestern states. Based on analyses of Modern‐Era Retrospective Analysis for Research Applications version 2, AOD reduction appears to be largely attributable reductions sulfate, there have been marked increases...