WorldCat Identities

Gu, Dasa

Overview
Works: 10 works in 12 publications in 1 language and 22 library holdings
Genres: Academic theses 
Roles: Author
Publication Timeline
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Most widely held works by Dasa Gu
A sampler for atmospheric volatile organic compounds by copter unmanned aerial vehicles by Karena A McKinney( )

2 editions published between 2018 and 2019 in English and held by 4 WorldCat member libraries worldwide

Leaf phenology as one important driver of seasonal changes in isoprene emissions in central Amazonia by Eliane G Alves( )

2 editions published in 2018 in English and held by 4 WorldCat member libraries worldwide

Seasonality of isoprenoid emissions from a primary rainforest in central Amazonia by Eliane G Alves( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

Urban pollution greatly enhances formation of natural aerosols over the Amazon rainforest by Manish Shrivastava( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

Biomass burning emission disturbances of isoprene oxidation in a tropical forest by Fernando Santos( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Sensitivity of biogenic volatile organic compounds to land surface parameterizations and vegetation distributions in California by Chun Zhao( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

Inverse modelling of NO x emissions over eastern China: uncertainties due to chemical non-linearity by Dasa Gu( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

Improved inverse modeling of nitrogen oxides emissions using satellite measurements over China and evidence of volatile organics emissions over the tropical Pacific by Dasa Gu( )

1 edition published in 2014 in English and held by 0 WorldCat member libraries worldwide

We improved the assimilated daily inversion method by conducting model simulation, satellite retrieval, and inverse modeling sequentially on a daily basis. The improved procedure was applied to GOME-2 and OMI NO₂ measurements over China in 2011, respectively. The new daily retrieval-inversion method significantly reduced the systematic bias in inverse modeling of NOx emission between using GOME-2 and OMI measurements, and detected more clear seasonal and weekly variations. OMI instrument observed NO₂ columns over China from 2005 to 2010 were analyzed in order to estimate the top-down anthropogenic NOx emission trends. The estimated average emission trend is slower than the trend reported for previous years. We find large regional, seasonal, and urban-rural variations in emission trends. These results appear to suggest that a number of factors have significantly reduced or even reversed the increasing trend of NOx emissions in more economically developed megacities and southern coastal regions, but their effects are not as significant in other major cities or less economically developed regions. A 1-D chemical transport model was applied to analyze OH and HO₂ radical observations during the Pacific Atmospheric Sulfur Experiment (PASE) near Christmas Island (Kiritimati, 1.52°N 157.24°W) from Aug. 2 through Sep. 10, 2007. In two of fourteen research flights, significantly higher HO₂/OH ratios in the buffer layer than the other flights were found. Model simulations indicated that fast-reacting oxygenated volatile organic compounds, which can react rapidly with OH and provide additional primary radical sources through photolysis, were necessary to explain the observations. During or right before these two flights, the WRF model simulated two strongest shallow convective events during this experiment, suggesting a transport pathway of ocean organics into the buffer layer. Ocean upwelling driven by atmospheric pressure depression during convection may expedite the release of ocean organics
 
Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.97 (from 0.97 for A sampler ... to 1.00 for Improved i ...)

Languages
English (12)