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david

Profile

David
T.
Ho
Adjunct Senior Research Scientist
Lamont-Doherty Earth Observatory
Geochemistry
61 Route 9W - PO Box 1000
Palisades
NY
10964-8000
US

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Fields of interest: 
Air-water gas exchange, tracer oceanography, transport in continental waters

To assess how human impact will affect the natural environment, we need to understand the relevant environmental processes. I have focused my studies on transport processes in natural systems (atmosphere, oceans, lakes, rivers and groundwater), using natural and anthropogenic tracers.

Tracers, whether they are of natural or anthropogenic origin, have the potential to be valuable tools for studies of the dynamics of the atmosphere and natural water systems. The tracer techniques that I have employed could be divided into two categories: 1) transient tracers, which are like 'dyes' with known delivery rates to the environment (CFCs, SF6), and 2) deliberate tracers, which are purposefully released into water bodies (SF6, N2O, 4He, 3He, florescent dyes).

I'm currently working in the following areas: Quantifying the effect of environmental variables on air-water gas exchange, developing of tracers for ocean mixing and circulation, and investigating transport and mixing in continental waters.

Some of my projects include:

  • Development of SF6 as a transient tracer for ocean circulation
  • Develop SF5CF3 as a deliberate tracer for ocean mixing
  • Air-Sea Gas Exchange investigations as part of SOLAS (Surface-Ocean Lower-Atmospheric Studies)
  • Studying sheetflow in the Florida Everglades
  • Studying transport and air-water gas exchange in the Hudson River Estuary

 

Education
List of degrees from highest to lowest:
Ph.D.
Columbia University
2001
M.Phil.
Columbia University
2000
M.A.
Columbia University
1997
B.A.
Columbia University
1994
Selected Publications: