Ka Ming Fung

Ka Ming Fung
Massachusetts Institute of Technology | MIT · Department of Civil and Environmental Engineering

Ph.D. in Earth and Atmospheric Sciences

About

19
Publications
3,159
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
46
Citations
Introduction
Ka Ming was a postdoc at MIT. He worked with Prof. Colette Hearld to investigate the role of marine dimethyl sulfide (DMS) in atmospheric composition and climate change. His work involved the development of NCAR's Community Earth System Models (CESM).
Additional affiliations
September 2019 - August 2021
Massachusetts Institute of Technology
Position
  • PostDoc Position
March 2019 - May 2019
The University of Sheffield
Position
  • Researcher
Description
  • Hosted by Dr. Maria Val Martin, Leverhulme Centre for Climate Change Mitigation; supported by the Global Scholarship Programme for Research Excellence 2018-19, The Chinese University of Hong Kong
October 2017 - March 2018
Emory University
Position
  • Visiting Scholar
Description
  • Hosted by Prof. Eri Saikawa; supported by the Pre-doctoral Fellowship, Institute for Quantitative Theory and Methods, Emory University
Education
August 2015 - August 2019
The Chinese University of Hong Kong
Field of study
  • Earth and Atmospheric Sciences
September 2011 - June 2012
The Chinese University of Hong Kong
Field of study
  • Mathematics
September 2006 - June 2009
The Hong Kong University of Science and Technology
Field of study
  • Mechanical Engineering

Publications

Publications (19)
Preprint
Full-text available
Global ammonia (NH3) emission is expected to continue to rise due to intensified fertilization for growing food to satisfy the increasing demand worldwide. Previous studies focused mainly on estimating the land-to-atmosphere NH3 injection but seldom addressed the other side of the bidirectional nitrogen exchange – deposition. Ignoring this signific...
Article
Full-text available
Large-scale, industrialized farming has contributed significantly to the increased global food supply to feed the fast-growing world population over the past few decades, but it also comes with severe threats to the environment. In particular, the excessive application of chemical fertilizer has led to large emissions of reactive nitrogen compounds...
Article
Full-text available
Aerosol indirect radiative forcing (IRF), which characterizes how aerosols alter cloud formation and properties, is very sensitive to the preindustrial (PI) aerosol burden. Dimethyl sulfide (DMS), emitted from the ocean, is a dominant natural precursor of non-sea-salt sulfate in the PI and pristine present-day (PD) atmospheres. Here we revisit the...
Article
Full-text available
With the rising food demands from the future world population, more intense agricultural activities are expected to cause substantial perturbations to the global nitrogen cycle, aggravating surface air pollution and imposing stress on terrestrial ecosystems. Much less studied, however, is how the terrestrial ecosystem changes induced by agricultura...
Preprint
Full-text available
With the rising food demands from the future world population, more intense agricultural activities are expected to cause substantial perturbations to the global nitrogen cycle, aggravating surface air pollution and imposing stress on terrestrial ecosystems. Much less studied, however, is how the terrestrial ecosystem changes induced by agricultura...
Presentation
Atmospheric ammonia (NH3) is derived mainly from agricultural sources (>85%) in most parts of the world. Such NH3 contributes to ~20% of fine particulate matter (PM2.5) in regions neighboring the agriculture sources, with ramifications for both human health and climate. Intensified farming activities to meet the fast-growing food demand due to the...
Article
Full-text available
Background Modernised farming has contributed significantly to the increased global food supply over the past half-century, albeit while creating severe threats to the environment. Excessive application of chemical fertiliser has in particular led to massive release of reactive nitrogen compounds into the atmosphere, where they become major compone...
Poster
Agriculture is the major emitter of atmospheric ammonia (NH3) in Europe, China, and US (85~95%) while such emission also contributes to ~20% of the fine particulate matter (PM2.5) formed, which harms human health in the downwind areas. The fast-growing food demand, due to the rising world population and their meat-inclined diet, could thus worsen a...
Poster
We investigate the feasibility of adopting large-scale intercropping by implementing new schemes into a biogeochemical model (DNDC) to simulate a scenario of nationwide adoption of maize- soybean intercropping in China, validated with field results. We show that intercropping can improve total maize and soybean production with less fertilizer requi...
Presentation
Agricultural activities are the major emitter of atmospheric ammonia (NH3) in Europe, China and US (85~95%) while such emission also contributes to ~20% of the fine particulate matter (PM2.5) formed, which harms human health in the downwind areas. The fast-growing food demand, due to the rising world population and their meat-inclined diet, could t...
Poster
Summary: We investigated the feasibility of adopting large-scale intercropping by implementing new schemes into a biogeochemical model (DNDC) to simulate a scenario of nationwide adoption of maize-soybean intercropping in China, validated with field results. We show that intercropping can improve total maize and soybean production with less fertili...
Presentation
Rapidly rising food demand due to the fast-growing world population is going to impose a severe pressure on our current global food production system. Modern agricultural practices that boosting crop yield by increasing fertilizer use come with a cascade of environmental problems including air pollution. In China and Europe, ~90% of atmospheric amm...
Presentation
The fast-growing world population will impose a severe pressure on our current global food production system. Meanwhile, boosting crop yield by increasing fertilizer use comes with a cascade of environmental problems including air pollution. In China, agricultural activities contribute to 95% of total ammonia emissions. Such emissions are attributa...
Presentation
We modify DNDC to incapsulate intercropping - a sustainable farming method. We then carry out a model experiment to convert all monoculture farmlands in China to intercropping ones to investigate the beneficial effects of such sustainable farming practices on air quality and food security.
Poster
We improve the algorithm of a process-based biogeochemical model to simulate a scenario of nationwide adoption of maize-soybean intercropping in China, validated with field results. We show that intercropping can improve total maize and soybean production with less fertilizer required and ammonia-induced downwind air pollution is reduced. We also c...
Poster
Effectiveness of intercropping with soybean as a sustainable farming practice to maintain food production and reduce air pollution in China
Poster
An introduction to the application of a agricultural model, Denitrification-Decomposition (DNDC), on sustainable farming practice
Article
Full-text available
Moyamoya disease leads to the formation of stenosis in the cerebrovasculature. A superficial temporal artery to middle cerebral artery (STA-MCA) bypass is an effective treatment for the disease, yet it is usually associated with postoperative cerebral hyperperfusion syndrome (CHS). This study aimed to evaluate cerebral hemodynamic changes immediate...

Network

Cited By

Projects

Projects (2)
Project
The world’s fast-growing population demands a doubled food supply by 2050. Without proper regulation, expanding croplands or intensifying farming for food productivity may threaten the environment and deplete its ecosystem services. Intercropping, as a sustainable farming practice, provides a solution to enhance food productivity, reduce fertilizer use, alleviate air pollution problems and preserve a sustainable environment. Large-scale deployment of intercropping on the current farmlands requires much support from the governments. This study aims to provide a scientific base for policy makers to evaluate feasibility and effectiveness of global or regional adoption of intercropping to safeguard the food supply, air quality, and environmental sustainability. Phase I of this study implements a new intercropping scheme in the process-based biochemical DeNitificaiton-DeCompositon (DNDC) model to predict yield gain, reduction in fertilizer use and ammonia (NH3) emission for a scenario of nationwide of adopting intercropping in China. Change in downwind fine particulate matter (PM2.5) formation of this scenario is examined using the Goddard Earth Observing System global 3-D chemical transport model (GEOS-Chem). We also perform a cost-benefit analysis to compare the production gain and air quality improvement brought by intercropping. In Phase II, this study transfers the new intercropping scheme tested in DNDC to the land module, Community Land Model (CLM), of the climate-chemistry-biosphere model, Community Earth System Model (CESM), to assess the global impact of adopting intercropping on food production and air. Possible applications of this study include identification of optimal allocation of crops for global deployment of intercropping using the modified CLM under future climate and land cover changes in response to various economic scenarios from present day to 2050.