ChEAS 2002 Workshop
Chequamegon Ecosystem-Atmosphere Study (ChEAS) 2002 Workshop
Kemp Natural Resources Station, Woodruff, WI
August 16-21, 2002

This workshop is supported by a Research Collaboration Network grant from the National Science Foundation. This grant also provides funding for exchange of research staff among participating ChEAS research groups.  Click here for more information about research exchange. Click here for general information about the Research Collaboration Network.

· About the workshop
· Registration information
· Schedule
· Online presentations, posters and publications
<updated 1/13/2003>
· Participant list and room assignments
· Workshop instructions for attendees, presenters and day leaders
· Getting to Kemp Natural Resources Station and Local Map
· Directions to evening restaurants
· What to bring (Lodging information)
· What to do / local resources
· Evaluation form
| Adobe Acrobat Reader PDF format |<new 08/26/2002>
· Photos  <updated 10/1/2002>
· About the ChEAS research collaboration network laboratory exchange program

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About the workshop

Ecology/Atmospheric Science Workshop on Interannual Variability in CO2 and H2O Fluxes in Northern Temperate Forests
Sponsored by the Chequamegon Ecosystem Atmosphere Study (ChEAS)

Dates: August 16-21, 2002
Location: Kemp Natural Resources Station, Woodruff, Wisconsin

The Chequamegon Ecosystem-Atmosphere Study (ChEAS) is a multi-organizational research effort studying biosphere / atmosphere interactions within northern mixed forests in Northern Wisconsin and Michigan. The unifying goal of ChEAS is to understand the processes controlling forest-atmosphere exchange of carbon dioxide and water and the response of these processes to climate and land-use change. The August workshop will bring together a wide range of participants from within and outside of the ChEAS network to focus on approaches to measure and explain interannual variability in NEE of northern temperate forests.

The workshop is intended to provide multidisciplinary training and research opportunities to new scientists working across traditional disciplinary boundaries in the fields of ecology, hydrology and atmospheric science. The workshop will consist of six days of expert-led sessions with lectures, field trips, and discussion. Workshop topics include eddy-covariance fluxes, chamber fluxes, biometry, sapflow fluxes, water modeling, satellite-derived NPP, LAI, phenology, tracers, and sub-canopy neworks.

This workshop is supported by a Research Collaboration Network grant from the National Science Foundation. This grant also provides funding for exchange of research staff among participating ChEAS research groups.  Click here for more information.

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Registration information

Early registration is encouraged to ensure on-site accommodations. Funding is available to cover full costs of workshop attendance (transportation, lodging, and food) for a limited number of advanced undergraduate students, graduate students, and postdoctoral researchers from participating ChEAS labs.

To register, please send the following information to Diane Yoder at The Pennsylvania State University ( by July 15, 2002: name, address, university affiliation, and contact information. If you are a student applying for funding support, please also provide a brief statement describing your research interests as related to ChEAS and how your program will benefit from attendance of the workshop.

If you are interested in presenting at the meeting or leading/co-leading a workshop session, please contact Ken Davis at The Pennsylvania State University (

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Workshop Schedule

    Morning workshop sessions will mostly take place at the Kemp NRS classroom located above the boathouse.  An LCD projector and overhead projector will be available for use  Afternoon small group sessions will take place either in the Kemp NRS computer lab (located in the office) or in the classroom.  Breakfast and lunch will be self-service from the Kemp kitchen.  Food for breakfast (cereals, breads, fruit, milk, juice, coffee), lunch (breads, cheese, peanut butter, salads, fruits, chips, juices) and snacks will be provided.  Group dinners will occur most nights at local restaurants. Please let us know if you have any special dietary requests.

Generic outline for afternoon discussion/analysis sessions

   - What data is currently available to address this question?
   - Can we construct on outline of a research paper that would answer this question?
   - What additional data may be needed?
   - What experiments/analyses/additional measurements or models could be proposed that would address this question?

Reporting responsibilities

Each day should have one or more persons responsible for updating the ChEAS web site with materials that are presented including publications, current research projects, major results from ChEAS, and electronic versions of the day’s talks.  Each afternoon will have one or more persons from each discussion group charged with writing a summary of the proceedings of that group and presenting it briefly the following morning.

Daily Schedule

    Thursday, August 15 - Arrival, all meals on your own

    Friday, August 16

         8:00-9:00     Breakfast - Kemp kitchen

         9:00-12:00   Boathouse: Workshop session I (Eddy-covariance measurements)
              9:00-9:45      Ken Davis – Methods.
              9:45-10:30    Ken Davis – Past research results
            10:30-12:00    Davis and group – current research and future plans

       12:00-13:00   Lunch - Kemp kitchen

       13:00-17:00+ Research lab:  Demonstrations and small group discussion
            13:00-14:00    Eddy covariance flux calculations and LI-COR demonstration
            14:00-17:00+  Discussions.  Topics drawn from the morning. Possible topics include:
                - Possible causes of interannual variability at WLEF
                - Possible causes of differences among ChEAS tower flux measurements
                - Potential for instrument bias, errors, and improvements
                - Extension of interannual variability studies beyond ChEAS
                - Uses of sub-canopy flux and turbulence measurements
                - Two-dimensional flux experiments and analyses
                - Caterpillars – observed or imagined?

        19:00             Fabulous fish fry at the Lakeshore Restaurant, Fence Lake Lodge (715-588-3255)
                                 12919 Frying Pan Camp Lane, Lac du Flambeau (12 miles from Kemp)

    Saturday, August 17

         8:00-9:00     Breakfast - Kemp kitchen

         9:00-12:00   Boathouse:  Workshop session II (Chamber fluxes and biometry)
              9:00-9:30       Recap from Friday’s group discussions
              9:30-12:00     Lectures by Eileen Carey and Paul Bolstad

        12:00-13:00   Lunch - Kemp kitchen

        13:00-15:00  Field trip: Willow Creek research site.  Chamber flux measurement demonstration.

        15:00-1700+ Research lab: Small group discussions and analyses. Topics drawn from the morning discussions.  Possibilities include:
            - Comparison of chamber fluxes between sites
            - Comparison of eddy flux and chamber flux measurements
            - Upscaling to the WLEF footprint
            - Interannual variability in chamber flux measurements 
            - The use of biometric measurements as part of ChEAS

        19:00             BBQ at Kemp brought to you by Eileen Carey and crew

    Sunday August 18

         8:00-9:00     Breakfast - Kemp kitchen

         9:00-12:00   Morning off - group or individual activities

        12:00-13:00   Lunch - Kemp kitchen

        13:00-15:30   Boathouse:  Workshop session III (Neighboring research sites)
            13:00-13:30   Reports from the Saturday afternoon discussion groups.
            13:30-14:30   Jiquan Chen.  Additional Michigan and Wisconsin flux measurements.
            14:30-15:30   Chris Vogel.  Results from the Pellston and Monroe-Morgan flux towers.

        15:30-17:30+ Research lab: Small group discussion/analysis session.  Possible topics include:
            - Cross-ChEAS flux tower comparison
            - Cross-ChEAS chamber flux comparison
            - Cross-ChEAS upscaling
            - Coherence of interannual variability across the upper Midwest
            - Young aspen in WI vs. old aspen in MI
            - Regional flux experiments in the upper Midwest

        19:00              Dinner at Bosacki's Boat House (715-356-5292) - downtown Minocqua on Hwy 51 at the bridge

    Monday, August 19

         8:00-9:00     Breakfast - Kemp kitchen

         9:00-12:00   Boathouse:  Workshop session IV (Weekend review, forest phenology, canopy laser imaging)
              9:00-10:00   Re-cap / highlights of weekend sessions – Davis, others
            10:00-11:00   Forest phenology observations and analyses – Mark Schwartz
            11:00-12:00   Canopy laser imaging presentation – Phil Radtke

        12:00-13:00   Lunch: Kemp kitchen

        13:00-15:00   Field demonstrations:
            - Canopy laser imaging demonstration
            - Field examples of phonological indicators?
            - Brief tour of Willow Creek and WLEF flux towers?

        15:00-17:00+ Research lab: Small group discussions/analyses.  Topics from the morning. Possibilities include:
            - Phenology and WLEF interannual variability
            - Canopy density differences among ChEAS sites
            - Remote sensing of phenology
            - Leftovers from the morning recap/weekend topics

        19:00             Dinner at the Minocqua Brewing Company microbrewery (715-358-3040) - 238 Lake Shore Drive, Minocqua

    Tuesday, August 20

         8:00-9:00      Breakfast - Kemp kitchen

         9:00-12:00    Workshop session V (MODIS validation, remote sensing, water modeling, sap fluxes)
             9:00-9:30     Reports from the Monday afternoon discussion groups
             9:30-12:00   Faith-Ann Heinsch, Doug Ahl, Scott MacKay

        12:00-13:00   Lunch - Kemp kitchen

        13:00-15:00   Field trip: View typical ChEAS ecosystems from both a ground- and remote sensing-based perspective.

        15:00-17:00+  Research lab: Small group discussions/analyses. Possible topics include:
            - Interannual variability in water fluxes
            - Sap flux – tower flux comparisons
            - Similarity between water and CO2 – integration of these data sources
            - Interannual variability in LAI – ground or satellite based.
            - Use of water or LAI data to understanding interannual variability in CO2
            - Use of water or LAI data to understand differences among site CO2 fluxes

        19:00             Dinner at Norwood Pines Supper Club (715-356-3666) 10171 Highway 70 (West on 70), Minocqua

    Wednesday, August 21

         8:00-9:00     Breakfast - Kemp kitchen
         9:00-12:00   Workshop session VI (Tracers and sub-canopy measurements)
             9:00-9:30     Reports from the Tuesday discussion groups
             9:30-12:00   Atmospheric trace gas measurements, Peter Bakwin and Britt Stephens

        12:00-13:00   Lunch - Kemp kitchen

        12:00+           Open time at Kemp.  Additional discussions, site visits, at your discretion.
                              Dinner on your own
                              Depart from Kemp by Thursday morning.

    Reservations at Kemp Natural Resources Station are from 9 a.m. Thursday, August 15 until 9 a.m. Thursday, August 22.  Thus, you may spend the night on Wednesday, August 21 if you would like.

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Participant list

Confirmed attendees:
    Please send any corrections to Diane Yoder <>

First Last Email Room Notes
Doug Ahl Lakeview Mon-Wed
Peter Bakwin Lakeview Mon-Wed
Paul Bolstad Cabin Fri-Mon
Mary Bresee   Hemlock Jiquan Chen's student Fri-Sun
Sean Burrows Lakeview not sure
Martha Butler Hemlock All
Eileen Carey Hemlock Sat-Sun, coming in Fri night
Jiquan Chen Starflower Sat-Sun,Tue
Bruce Cook Cabin All
Ken Davis Wintergreen All
Ankur Desai Tamarack Sun-Wed
Faith-Ann Heinsch Hemlock Mon-Wed
Ryan Kirk Cabin Fri-Mon?
Leslie Kreller Hemlock Eileen Carey's student (All)
Jim Lemoine   Starflower Jiquan Chen's student Fri-Sun
Scott Mackay Starflower Mon-Wed
Jon Martin Cabin All
Elizabeth Nauretz - Fri,Sun, commuting
Phil Radtke Lakeview Sun-Wed
Dan Ricciuto Tamarack All
Scott Richardson Tamarack Sun-Thu
Mark Schwartz Lakeview Sun-Tue
Britt Stephens Starflower Mon-Wed
Ron Teclaw - commuting from Rhinelander, no accomodations needed
Chris Vogel Wintergreen representing Peter Curtis, staying in Hayward area with relatives, Fri-Sun
Chuixiang Yi Tamarack All

Approximate # people per day:  Thu. (7), Fri. (16), Sat. (18), Sun. (23), Mon. (23), Tue. (21), Wed. (19)

Click here for a floor plan of the Kemp Lodge (requires Acrobat Reader).

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What to bring (Lodging information)

Limited (30 beds) dormitory-style accommodations are provided at Kemp Natural Resources Station.  Sheets and linens are provided (you can also bring your own sleeping bag).  Towels are NOT provided.  You may also want to bring shower slippers, hiking shoes, a bathing suit, a flashlight, and some bug spray.  We will have access to a large kitchen for group or individual meals.  Cooking vessels, utensils, plates and cups are all provided.  Food is available at nearby supermarkets.  Dial-up internet access is provided at the Kemp lab. 

You may also want to stay at nearby hotels (all are around 15 minute drive).  Click here for a local hotel directory.  We recommend the Americinn Motel in Minocqua (National reservations: 1-800-634-3444, Local: 715-356-3730) or the New Concord Inn in Minocqua (1-800-356-8888 or 715-356-1800).

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What to do / local resources

Groceries and Sundries - Trig's in Minocqua, WI is the best nearby 24-hour supermarket and liquor store.  It is located on state route 70, 1/4 mile west of the intersection of 70 and US 51.  Near Trig's are a bakery/coffee shop, Walmart and Radioshack.  Ace Hardware in Woodruff, WI (north of Kemp on state route 47) is the best local hardware store.

Restaurants - Information about the Minocqua area, including restaurants can be found at and at For local microbrews, check out the Minocqua Brewery in Minocqua off of US-51.  Another local tradition is the Friday night fish fry, available at just about any place.

Recreation - Canoes and rowboats are available for use from the Kemp boathouse.  From Kemp you can explore the many surrounding lakes.  Hiking opportunities are infinite in the Chequamegon-Nicolet National Forest.  Trails also exist on the Kemp property.  The Upper Peninsula of Michigan, about 1 hour away, has beautiful state parks (i.e., Porcupine State Park).  Fishing is also very popular up-here, a Wisconsin non-resident four-day fishing license will set you back about $15. 

Other attractions - World's largest wooden penny and the Dr. Kate museum in Woodruff, the Rhinelander Hodag at the Rhinelander Chamber of Commerce, Fred Scheer's lumberjack show in Woodruff.  Mini-golf and "wildlife" safaris are also prevalent in the Northwoods. 

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About the ChEAS research collaboration network laboratory exchange program

Funding is available for short-term (2 weeks to 2 months) exchanges of students and postdoctoral researchers between ChEAS core participant laboratories.  The objective of the exchange program is to promote cross-disciplinary research focused on understanding the processes controlling forest-atmosphere exchange of carbon dioxide and water and the response of these processes to climate and land-use change.  Candidates will be chosen based on scientific merit of proposed research project as determined by the steering committee and participation by the maximum number of participant labs will be strongly encouraged.  Funding for laboratory exchanges includes roundtrip airfare from the home institution and per diem.  The host laboratory group is expected to provide temporary housing. 

 To apply for 2002 lab exchange send the following materials to Diane Yoder (
    1.  statement of research problem
    2.  proposed work
    3.  benefits to you, ChEAS, and host lab
    4.  expected products
    5.  letter of support from host lab

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