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Robert Clement

Me in Utah Desert

Address

Rm 202 Crew Building
West Mains Road
Edinburgh
EH9 3JN
Phone from within UK 0131 650 7732
Phone from outside UK +44 131 650 7732
Email Robert.Clement@ed.ac.uk

Research Interests

Originaly trained as a meteorologist at the Univ. Wisconsin, Madison; I became intested in flux measurements when doing my masters work at the Univ. Nebraska, Lincoln. I worked at Nebraska for 13 years during which I conducted measurements in many different ecosystems. I left Nebraska in 1996 in order to do PhD research at the University of Edinburgh. While in Edinburgh I developed the EdiRe software tool for flux analysis as well as conducting field research. A description of my field research efforts is summarized below.

Curriculum Vitae


Research History

Ecosystem flux measurement of cereal crops

Mead 1983 - 1986

This study of the carbon and energy fluxes of cereal crops (barley, winter wheat) was done as part of my masters degree research. The study used 1D campbell Scientific anemometers, a drag anemometer, and a Lawrence Livermoore open path CO2 sensor. Only two weeks of quality data were obtained for a summers worth of effort.


Wheat
Flux comparison experiment over cereal crop

Winnipeg, Manitoba ,Canada 1985.

This study brought together the expertise of four research institutes: McGill Univ. (P. Schuepp) , Univ of ??? (R. Desjardin), Okayama Univ.
(E. Ohtaki), and the Univ. Nebraska (S. Verma). We compared CO2 fluxes of an agricultural crop using three surface flux measurements and one aircraft mounted system.

Ecosystem flux measurement of deciduous forest

ATDD, Oak Ridge, Tenessee, USA 1986.

This was my first experience measuring fluxes over forests. This short (a few weeks) experiment measured the CO2 and energy fluxes of a deciduous forest during the summer.

Oak Ridge tower
Ecosystem flux measurement of grasslands

FIFE, Manhattan Kansas, USA, 1986-1989.

One of the first large, multi-diciplinary, ecosystem measurement projects - this study examined a tall grass prairie in northeast Kansas. Our group, measured the energy budget using eddy covariance and gradient measurements and eddy covariance CO2 fluxes. This research was in association with the PhD work of Joon Kim, while Andy Suyker compared open and closed path CO2 sensors. While the main experiment was in 1987 and 1989 we set up a pilot experiment in 1986 to prepare for the main experiment.

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Ecosystem flux measurement of wetlands, Minnesota

Marcell Experimental Forest, Grand Rapids Minnesota, USA, 1990 - 1992.

With the aquisition of a tunable diode laser (Unisearch) for measuring methane, we started a period of wetlands flux measurement. Our first experiment measured CO2 and CH4 fluxes of a fen in northern Minnesota.

Marcell HQ
Ecosystem flux measurement of wetlands, Nebraska Sandhills

Valentine, Nebraska, USA, 1993-1995.

Although I didnt spend much time at this site I did a lot of the preliminary work researching possible sites and setting up the experiment. Joon Kim was in charge for most of the experiment. We measured CO2 and CH4 fluxes of a sandhills wetland. The underlying aquafer creates small ponds and marshes scattered across a prairie landscape.

Swan Lake in the Sandhills of Nebraska

Ecosystem flux measurement of wetlands, Canada

BOREAS project. Candle Lake, Saskatchewan, Canada 1993-1995.

Another large interdiciplinary experiment in central Saskatchewan. Again we measured CO2 and CH4 fluxes of a fen.

Boreas tower
Ecosystem flux measurement of grassland and cropland

Ponca City, and Shidler Oklahoma, USA, 1996

I missed most of the field research at these two sites in north central Oklahoma. Again I was responsible for the preliminary work of researching possible sites and setting up the experiment. The project moved back to measureing just CO2 fluxes of a prairie pasture and wheat crop.

Ponca
Ecosystem flux measurement of coniferous forest

Griffin forest, Aberfeldy, Perthshire Scotland, 1997-present.

My first long term, continuous experiment, which formed the basis for my PhD thesis research. The experiment site is a Sitka spruce plantation located in central Scotland. The site has lovely views of Schiehallion from the top of the flux tower. My thesis research covered the period from 1997 to 2001. After thinning the site came back on line in 2004 and is currently operating. Some research results can be found here.

Griffin Road
Comparative carbon flux measurement of crops

East Saltoun, Wood farm, and Cirencester, 2002-present.

In this project we compared adjacent agricultural fields at three sites. Cirencester terminated operation in 2005 but the East Saltoun and Wood farm sites are still operational.





EastSaltoun image
Measurements of exchange in complex topography

Tumbarumba, Australia, 2005.

Although I missed the field portion of this project I did some of the equipment preparation and am working on a application for the associated modelling part of this project.





Tumbarumba
Turbulent theory

Dugway, Utah, USA, 2005.

Examining turbulent structure of a smooth surface. Our part of the project was initiated by Keith McNaughton and we worked with groups from Utah, Minnesota, London, and Brisbane. A fascinating an unique micromet opportunity.

Dugway tower

Measurements of flow over a forested hill

Arran, Scotland, 2006

This experiment is in the planning stages for the summer of 2006.


Other Research Interests

Data analysis Methods EdiRe

EdiRe is a free, Windows software package for the analysis of time series data. It is aimed more specifically at the calcualtion and correction of eddy covariance fluxes. I am developing EdiRe for users in the flux community who do not have the time or experience to produce their own application. I have tried to make it flexible enough to be useful to both begining and more advanced users.

EdiRe logo

Airborne research

This is a new area of research for our team and I will have more news on this in the future

SERA

Instrumentation

Under construction....