Greeting and announcements.

1
Introduction

• Greeting and announcements.
• What is the ChEAS RCN?
• Vision for the workshop.
• Goals of the workshop.
• Structure of this workshop. 
• A brief history of ChEAS.

2
The Chequamegon Ecosystem-Atmosphere Study
(ChEAS) Research Collaboration Network (RCN)

• Funded by the NSFs Biological Sciences
  Directorate.
• 5 year project, started January 2002.
• Proposal written by Eileen Carey and Bruce Cook.
  Initiated at the suggestion of Jim Ehleringer,
  U.Utah, at the 4th ChEAS meeting, Madison, WI,
  June, 2001.

3
ChEAS RCN, continued

• Objectives
• Provide multidisciplinary training and research
  opportunities to new scientists working across
  traditional boundaries in the fields of ecology,
  hydrology and atmospheric science.
• Promote the development of integrative research
  projects building upon the ChEAS infrastructure,
  especially those focusing on bridging the gap
  between leaf- and canopy-scale flux measurements
  and the global CO2 flask sampling network and
  understanding the causes of seasonal to
  interannual variability in forest-atmosphere
  exchanges.
• Promote data sharing.
• Guide the future direction of ChEAS research.

4
ChEAS RCN, continued

• Structure
• Steering group about 20 core participants (
  research group leaders with research interests
  matching the objectives of the RCN). Open to new
  members.
• Workshops. 2002, 2004, 2006. Funds to bring in
  guest scientists and participating students and
  scientists. 2 week duration. Second 2002
  gathering, 23-24 October, Boulder, Colorado.
• ChEAS meetings, each year. 1-2 days.
• Laboratory exchanges. Up to 5 visits/year,
  duration of 2 weeks to a few months.

5
Vision for the workshops

• ChEAS includes many research groups working at
  different sites with different methods and within
  different disciplines.
• The workshops provide a means for members of the
  participating research groups to learn the
  methods, data, and scientific results of other
  groups.
• The workshops provide a forum for enhancing
  collaboration among groups, and drafting new
  projects, research papers and proposals.
• Guest speakers enhance the workshop by teaching
  us of relevant work outside of ChEAS. We also
  hope to interest new investigators via these
  invitations.

6
Goals of this workshopInterannual Variability
in CO2 and H2O Fluxes in Northern Temperate
Forests

• Understand interannual variability in CO2 and H2O
  fluxes observed during ChEAS.
• Understand differences in fluxes observed among
  ChEAS research sites.
• Draft new papers and proposals following the
  results of our proceedings.
• Includes renewals of WLEF and W/L Creek projects,
  due to NIGEC on 3 September, 2002. Core projects.

7
Structure of this workshop

• Morning lectures, midday demos, afternoon
  discussions and analyses.
• Each day is focused on one method. Hopefully
  each afternoon the results of the method of the
  day are applied to answering the interannual
  variability and intersite comparison questions.
• Each day we should
• Update the ChEAS web site with projects,
  publication lists, and electronic proceedings.
  One volunteer/day.
• Have one person per discussion group volunteer to
  summarize the discussion (electronic verbal)
  and provide a brief summary the following
  morning.
• Brief presentations are welcome at any time.

8
A brief history of ChEAS

• Following the domestication of goats in the
  Euphrates-Tigris River Valley

9
A brief history of ChEAS

• Unknown date in pre-history, U. Wisconsin begins
  forestry research in the Chequamegon National
  Forest.
• 1990 or so, NOAA-CMDL starts instrumenting tall
  towers for trace gas measurements.
• December 1991, Davis and Bakwin start talking in
  Boulder, due to Michael Trolier and the Chemrawn
  VII meeting in Baltimore.
• 1994. NIGEC funds Bakwin and Davis for eddy flux
  measurements at WLEF. NOAA-funded CO2
  measurements start in 1994. Flux measurements
  start in 1995. AmeriFlux takes shape 1996(?).

10
A brief history of ChEAS

• 1997. Bolstad, Davis, Denning, Gower, Gutschick,
  and MacKay (others?) all begin new projects in
  the Chequamegon region, all focused to some
  extent around the WLEF flux and mixing ratio
  measurements. Gower organizes a winter 1998
  meeting at Kemp. ChEAS is born. Bakwin creates
  the acronym at this meeting.
• Past ChEAS meetings
• Kemp, February 1998.
• St. Paul, May 1999.
• St. Paul, June 2000.
• Madison, June, 2001
• ChEAS RCN funded in early 2002.

11
Major goals of ChEAS

• Understand forest-atmosphere carbon and H2O
  cycling.
• Understand the responses of forest-atmosphere
  carbon and H2O cycling to
• Climate variability and change
• Land use change
• Learn how to up-scale forest-atmosphere fluxes
  from chambers to forest stands, and from forest
  stands to all upper Midwest forests.

12
Changes since we met in Madison, June 2001

• ChEAS special issue submitted to Global Change
  Biology. Mixed results. 4/11 accepted. 1 just
  submitted. 1 to be resubmitted shortly.
• ChEAS RCN funded!
• Powered parachute experiments conducted.
• Regional CO2 project funded.
• Airborne CO2 flux and FIA project rejected.
• Expanded water flux project rejected.
• North American Carbon Plan drafted,
  implementation group working.
• Substantial progress in flux data analyses and
  ABL CO2 budget analyses using ChEAS data.