A5021194153- Remote Sensing in Agriculture
- Air Quality Monitoring and Forecasting
- Atmospheric chemistry and aerosols
- Fire effects on ecosystems
- Atmospheric and Environmental Gas Dynamics
- Atmospheric aerosols and clouds
- Remote-Sensing Image Classification
- Urban Heat Island Mitigation
- Calibration and Measurement Techniques
- Remote Sensing and LiDAR Applications
- Meteorological Phenomena and Simulations
- Satellite Image Processing and Photogrammetry
- Advanced Image Fusion Techniques
- Geophysics and Gravity Measurements
- Air Quality and Health Impacts
- Fire Detection and Safety Systems
- Geochemistry and Geologic Mapping
- Microbial bioremediation and biosurfactants
- Hydraulic Fracturing and Reservoir Analysis
- Microbial Metabolic Engineering and Bioproduction
- Vehicle emissions and performance
- Soil Moisture and Remote Sensing
- Impact of Light on Environment and Health
- Climate variability and models
- Bacterial Genetics and Biotechnology
Zhejiang University of Technology
2024-2025
Shanghai Stomatological Hospital
2024
Michigan State University
2019-2024
Tongji University
2024
Nankai University
2021
National Oceanic and Atmospheric Administration
2020
South Dakota State University
2016-2019
Science Applications International Corporation (United States)
2009
Duke University
2003
The Landsat satellites have been providing spectacular imagery of the Earth's surface for over 40 years. However, they acquire images at view angles ± 7.5° from nadir that cause small directional effects in reflectance. There are also variations with solar zenith angle year can apparent change reflectance even if properties remain constant. When data adjoining paths, or long time series used, a model anisotropy is required to adjust all observations uniform (primarily visual consistency,...
The medium spatial resolution satellite data from the polar-orbiting Sentinel-2A Multi Spectral Instrument (MSI) and Landsat-8 Operational Land Imager (OLI) sensors provide 10 m to 30 multi-spectral global coverage with a better than 5-day revisit. There are number of differences between sensor that need be considered before can used together reliably. for approximately 10° × southern Africa acquired in two summer (December January) winter (June July) months 2016 were compared. registered...
The free-availability of global coverage Landsat-8 and Sentinel-2 data provides the opportunity for systematic generation medium spatial resolution land products. This paper presents a combined burned area mapping algorithm. handling integrates recent research on pre-processing to generate registered, surface nadir BRDF-adjusted reflectance (NBAR) sensor time series that are used as an input. different through random forest change regression, trained with synthetic built from laboratory...
This paper presents a Stage 3 validation of the recently released Collection 6 NASA MCD64A1 500 m global burned area product. The product is validated by comparison with Landsat 8 Operational Land Imager (OLI) image pairs acquired 16 days apart that were visually interpreted. These independent reference data selected using stratified random sampling approach allows for probability in both time and space. A total 558 OLI (1116 images), between March 1st, 2014 19th , 2015, used to validate...
The PlanetScope CubeSat constellation is providing unprecedented global coverage, visible to near infrared, atmospherically corrected, 3 m imagery. revisit interval between successive overpasses varies in space and time a complex manner because of variety factors particularly the different sensor orbits. temporal availability imagery quantified this study considering all publicly available images acquired globally for 12 month period from December 1st 2019 November 30th 2020. A total 175.8...
This paper provides a synthesis of results that have emerged from recent modeling studies the potential sensitivity U.S. regional ozone (O3) concentrations to global climate change (ca. 2050). research has been carried out under auspices an ongoing Environmental Protection Agency (EPA) assessment effort increase scientific understanding multiple complex interactions among climate, emissions, atmospheric chemistry, and air quality. The ultimate goal is enhance ability quality managers...
Biomass burning is a global phenomenon and systematic burned area mapping of increasing importance for science applications. With high spatial resolution novelty in band design, the recently launched Sentinel-2A satellite provides new opportunity moderate mapping. This study examines performance Multi Spectral Instrument (MSI) bands derived spectral indices to differentiate between unburned areas. For this purpose, five pairs pre-fire post-fire top atmosphere (TOA reflectance)...
The Sentinel-2A multi-spectral instrument (MSI) acquires reflective wavelength observations with directional effects due to surface reflectance anisotropy and changes in the solar viewing geometry. Directional were examined by considering two ten day periods of data acquired close principal orthogonal planes over approximately 20° × 10° southern Africa. More than 6.6 million (January 2016) 10.6 (April pairs sensed 3 or 7 days apart forward backscatter directions overlapping orbit swaths...
Moderate spatial resolution satellite data from the Landsat-8 OLI and Sentinel-2A MSI sensors together offer 10 m to 30 multi-spectral reflective wavelength global coverage, providing opportunity for improved combined sensor mapping monitoring of Earth’s surface. However, standard geolocated L1T L1C products are currently found be misaligned. An approach automated registration is presented demonstrated using contemporaneous data. The computationally efficient because it implements feature...
High spatial resolution commercial satellite data provide new opportunities for terrestrial monitoring. The recent availability of near-daily 3 m observations provided by the PlanetScope constellation enables mapping small and spatially fragmented burns that are not detected at coarser resolution. This study demonstrates, first time, potential automated burned area mapping. sensors have no onboard calibration or short-wave infrared bands, variable overpass times, making them challenging to...
The European Space Agency (ESA) Sentinel-2A Multi Spectral Instrument (MSI) provides global coverage 10 m to 60 optical wavelength data in fixed geolocated tiles. Recently, it became apparent that when multi-temporal tile acquisitions are compared, they can be misregistered by more than one pixel. This study quantifies the misregistration application of a recently published matching algorithm all available sensed six months (June 2nd November 30th 2016) over 1400 × 3000 km southern Africa....
The Landsat Analysis Ready Data (ARD) are designed to make the U.S. archive straightforward use. In this paper, availability of 4 and 5 Thematic Mapper (TM) 7 Enhanced Plus (ETM+) ARD over conterminous United States (CONUS) quantified for a 36-year period (1 January 1982 31 December 2017). Complex patterns occur due satellite orbit sensor geometry, cloud, acquisition health issues because changing relative orientation tiles with respect paths. Quantitative per-pixel summary tile results...
In urban environments, aerosol distributions may change rapidly due to building and transport infrastructure human population density variations. The recent availability of medium resolution Landsat-8 Sentinel-2 satellite data provide the opportunity for optical depth (AOD) estimation at higher spatial than provided by other satellites. AOD retrieved from 30 m 10 Sentinel-2A using Land Surface Reflectance Code (LaSRC) were compared with coincident ground-based Aerosol Robotic Network...
Planetscope data are acquired from a constellation of low-cost satellites to provide 3 m red, green, blue, and near infrared (NIR) with near-daily global coverage. Differences in the spectral characteristics different sensor generations imply that they may not consistent reflectance time series needed for certain quantitative analyses. This study provides comprehensive comparison surface derived normalized difference vegetation index (NDVI) differences between first two sensors, known as...
The Landsat 5 orbit changed more than expected over its three-decade mission life. Previous modelling research indicated that the resulting overpass time and so acquisition solar zenith differences will have caused non-negligible reflectance normalized difference vegetation index (NDVI) temporal differences. Rather use a approach this paper presents results of comprehensive examination Thematic Mapper (TM) data. Ten years summer TM Analysis Ready Data (ARD) sampled at >19.3 million 30 m...
The August 2023 wildfires over the island of Maui, Hawaii were one deadliest U.S. wildfire incidents on record with 100 deaths and an estimated $5.5 billion cost. This study documents incidence, extent, characteristics Maui using multi-resolution global satellite fire products, in so doing demonstrates their utility limitations for detailed monitoring, highlights outstanding observation needs monitoring. NASA 500 m Moderate Resolution Imaging Spectroradiometer (MODIS) burned area product is...
ABSTRACT Gram-negative bacteria play a pivotal role in the bioremediation of persistent organic pollutants, such as polycyclic aromatic hydrocarbons (PAHs). Because outer membrane (OM) these hinders direct permeation hydrophobic substances into cells, trans-OM proteins are required for uptake PAHs. However, neither characteristics PAH transporters nor specific transport mechanism has been well interpreted. In this study, we revealed participation novel FadL family transporter, PadL,...
The Internet is expected to have a positive impact on economic growth, and its adoption rate will determine the extent of this impact. In paper, we examine how differences in willingness trust influence rates across countries. We show that has statistically significant levels penetration also success increasing through policies promote depend country's current level trust, such may produce digital divide among nations. Since low-trust countries tend be low or middle income, between translate...
The Landsat 15-m Panchromatic-Assisted Downscaling (LPAD) method to downscale Landsat-8 Operational Land Imager (OLI) 30-m data Sentinel-2 multi-spectral instrument (MSI) 20-m resolution is presented. first downscales the OLI bands using spatial detail provided by panchromatic band and then reprojects resamples downscaled into registration with Sentinel-2A data. LPAD demonstrated pairs of contemporaneous MSI images sensed less than 19 min apart over diverse geographic environments. shown...