A5100774623- Mass Spectrometry Techniques and Applications
- Advanced Chemical Sensor Technologies
- Meteorological Phenomena and Simulations
- Tropical and Extratropical Cyclones Research
- Climate variability and models
- Microstructure and mechanical properties
- Analytical chemistry methods development
- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Analytical Chemistry and Chromatography
- Advancements in Solid Oxide Fuel Cells
- Ion-surface interactions and analysis
- Aluminum Alloy Microstructure Properties
- Atmospheric and Environmental Gas Dynamics
- Regional Economic and Spatial Analysis
- Analytical Chemistry and Sensors
- Laser-Matter Interactions and Applications
- Geology and Paleoclimatology Research
- Ocean Waves and Remote Sensing
- Electronic and Structural Properties of Oxides
- Laser-induced spectroscopy and plasma
- Magnesium Alloys: Properties and Applications
- Microstructure and Mechanical Properties of Steels
- Fuel Cells and Related Materials
- Gas Sensing Nanomaterials and Sensors
Chinese Academy of Sciences
2015-2024
Dalian Institute of Chemical Physics
2015-2024
NOAA National Centers for Environmental Prediction
2014-2024
NOAA Environmental Modeling Center
2014-2024
Changchun Institute of Optics, Fine Mechanics and Physics
2010-2024
Yunnan University
1998-2024
Dalian University of Technology
2024
University of Chinese Academy of Sciences
2020-2024
NOAA National Weather Service
2024
Shanxi Normal University
2024
Abstract The current operational NCEP Global Forecast System (GFS) cumulus convection schemes are updated with a scale-aware parameterization where the cloud mass flux decreases increasing grid resolution. ratio of advective time to convective turnover is also taken into account for parameterization. In addition, present deep closure using quasi-equilibrium assumption no longer used sizes smaller than threshold value. For shallow scheme, cloud-base modified be given by function mean updraft...
Photodynamic therapy (PDT), as an emerging cancer treatment, requires the development of highly desirable photosensitizers (PSs) with integrated functional groups to achieve enhanced therapeutic efficacy. Coordination-driven self-assembly (CDSA) would provide alternative approach for combining multiple PSs synergistically. Here, we demonstrate a simple yet powerful strategy conventional chromophores (tetraphenylethylene, porphyrin, or Zn-porphyrin) pyridinium salt together through...
Ion mobility spectrometry (IMS) is a key trace detection technique for explosives and the development of simple, stable, efficient nonradioactive ionization source highly demanded. A dopant-assisted negative photoionization (DANP) has been developed IMS, which uses commercial VUV krypton lamp to ionize acetone as electrons produce reactant ions in air. With 20 ppm dopant, stable current 1.35 nA was achieved. The were identified be CO(3)(-)(H(2)O)(n) (K(0) = 2.44 cm(2) V(-1) s(-1)) by...
A novel combined ion source based on a vacuum ultraviolet (VUV) lamp with both single photon ionization (SPI) and chemical (CI) capabilities has been developed for an orthogonal acceleration time-of-flight mass spectrometer (oaTOFMS). The SPI was accomplished using commercial 10.6 eV krypton discharge flux of about 10(11) photons s(-1), while the CI achieved through ion-molecule reactions O(2)(+) reactant ions generated by photoelectron at medium pressure (MVP). To achieve high efficiency,...
Abstract This study evaluates the impact of assimilating high-resolution, inner-core reconnaissance observations on tropical cyclone initialization and prediction in 2013 version operational Hurricane Weather Research Forecasting (HWRF) Model. The HWRF data assimilation system is a GSI-based hybrid ensemble–variational that, this study, uses Global Data Assimilation System ensemble to estimate flow-dependent background error covariance. improves track forecasts reduces intensity after 18–24...
The next generation Hurricane Analysis and Forecast System (HAFS) has been developed recently in the National Oceanic Atmospheric Administration (NOAA) to accelerate improvement of tropical cyclone (TC) forecasts within Unified (UFS) framework. finite-volume cubed sphere (FV3) based convection-allowing HAFS Stand-Alone Regional model (HAFS-SAR) was successfully implemented during Improvement Project (HFIP) real-time experiments for 2019 Atlantic TC season. HAFS-SAR a single large 3-km...
New techniques for the field detection of inorganic improvised explosive devices (IEDs) are urgently developed. Although ion mobility spectrometry (IMS) has been proved to be most effective method screening organic explosives, it still faces a major challenge detect explosives owing their low volatilities. Herein, we proposed strategy detecting trace by thermal desorption (TD-IMS) with sample-to-sample analysis time less than 5 s based on in-situ acidification sampling swabs. The responses...
This document summarizes the physics schemes used in two configurations of first version operational Hurricane Analysis and Forecast System (HAFSv1) at NOAA NCEP. The package HAFSv1 is same as that NCEP global forecast system (GFS) 16 except for an additional microphysics scheme modifications to sea surface roughness lengths, boundary layer scheme, entrainment rate deep convection scheme. Those are specifically designed improving simulation tropical cyclones (TCs). mainly differ adopted...
Ion mobility spectrometry (IMS) has become the most deployed technique for on-site detection of trace explosives, and reactant ions generated in ionization source are tightly related to performances IMS. Combination multiform would provide more information is favor correct identification explosives. Fast switchable CO3(-)(H2O)n O2(-)(H2O)n were realized a dopant-assisted negative photoionization ion spectrometer (DANP-IMS). The switching could be achieved less than 2 s by simply changing gas...
A simple space compression-dispersion model for ion transport at ambient pressure was mathematically established. On the basis of this and aided by SIMION simulation, a three-zone theory proposed to characterize Bradbury-Nielsen gating electric field features as three zones: depletion zone, dispersion compression zone. Then, influences voltage difference increases on full width half-maximum Cl– peak were investigated in detail verify theory. For example, 350 V gate pulse 0.34 ms, packets...
Abstract This study documents the recent efforts of hurricane modeling team at National Centers for Environmental Prediction’s (NCEP) Modeling Center (EMC) in implementing operational Hurricane Weather Research and Forecasting Model (HWRF) real-time tropical cyclone (TC) forecast guidance western North Pacific basin (WPAC) from May to December 2012 support forecasters Joint Typhoon Warning (JTWC). Evaluation model performance WPAC reveals that has promising skill with 3-, 4-, 5-day track...