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Midcontinental intensive update

Midcontinental intensive update. Top-down summary. Successful 2007 atmospheric CO 2 measurement campaign underway. Data array of unprecedented density. Various groups have inverse methods prepared and/or under development.

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Midcontinental intensive update

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  1. Midcontinental intensive update

  2. Top-down summary • Successful 2007 atmospheric CO2 measurement campaign underway. Data array of unprecedented density. • Various groups have inverse methods prepared and/or under development. • Slow link for 2007-2008 inverse analyses is likely to be atmospheric transport fields.(?) • 2004 has been suggested as a test case for top-down and bottom-up methods and comparison of these methods since all data are already available. This should speed our ability to synthesize 2007-2008 data once they are available. No precise timelines or domain for 2004 test yet specified.

  3. Atmospheric mixing ratio measurements for 2007-2008 campaign • 5 “ring of towers” sites (Penn State) running and debugged - final adjustments made in late June. Picarro cavity ring-down spectroscopic sensors. CO2 only, two measurement levels (30 and 100-150m AGL). http://ring2.psu.edu • Iowa and Erie tall towers (NOAA) running as of late June. Multiple trace gases sampled in addition to CO2. Total of 5 tall towers now running. 3 more planned for 07-08 installation. • Airborne profiling network (NOAA) is operational. • More than 10 AmeriFlux towers host well-calibrated CO2 mixing ratio measurements (Penn State, individual PIs). CO2 only. Database under development. Site maps, etc, at http://www.amerifluxco2.psu.edu. • Airborne sampling campaign (Purdue) took place in June/July, 2007. 7 flights. • NASA Langley Doppler wind/DIAL CO2 system was deployed for 2 weeks at WLEF in Wisconsin, late June 2007. One month of DIAL CO2 planned for 2008, site TBD. • CLASIC field campaign, June 2007, ARM site, Oklahoma.

  4. Sampling Campaign Time Lines for MCI Campaign 2008 2009 2010 2007 Apr Aug Dec Apr Aug Dec Apr Aug Dec Apr Aug Tall Tower Measurements Aircraft Profiles Aircraft Campaign MCI and Arm CART (1-3 wks) Ring of Towers Calibrated Flux Towers Top-Down Intercom-parisons (data and models) Data Stream Top-Down v. Bottom-Up Flux Measurements Previous Year Fluxes Previous Year Fluxes Ameriflux Gracenet Bottom-Up Intercom-parisons (models, 2003) Input Data Available Top-Down v. Bottom-Up 2007 Est- imates

  5. Additional specific products • Fall 2007 EOS article about the MCI, including preliminary results, has been discussed. • Fall 2007 AGU session on regional carbon flux measurements and models has been called. An overview talk on the MCI should be submitted to this session. • MCI top-down and bottom-up communities should specify their plans (including timelines), if any, to run 2004 test cases.

  6. More details on: • Tall tower network • Airborne profiling network • MCI airborne campaign • CLASIC airborne campaign

  7. NOAA Tall Tower Network Update • Tall tower network expansion (see map): • Two new sites: • WBI: West Branch, Iowa • Target agricultural ecosystems • MCI • Start date: July 1, 2007 • BAO: Erie, Colorado (May 5 2007) • NOAA owned tower, Boulder Atmospheric Observatory • Target urban emissions • Two more sites planned by end of Calendar Year 2007 • Walnut Grove, CA (joint with DOE via LBNL) • Columbia, South Carolina (joint with DOE via SRNL) • MCI Illinois tower still pending • Still waiting on NOAA lease • Hope to be ready by growing season 2008 • Daily automated flask sampling from tower sites: LEF, WKT, WBI, BAO • Carbon gases: CH4, CO, 13CO2,, COS • Pollution tracers: Halocarbons, SF6 ,potential for 14CO2

  8. Existing Pending Defunct NOAA Earth System Research Laboratory Tall Tower Network, August 2007

  9. Mid-afternoon CO2 from NOAA Tall Tower Network Summer 2007 CO2, ppm TEXAS MAINE WISCONSIN COLORADO IOWA

  10. NOAA Aircraft ProgramVertical Annual Climatology Colm Sweeney Pieter Tans

  11. Mid-continent Intensive Mapping spatial Variability of CO2 MCI Colm Sweeney (NOAA/ESRL) Paul Shepson (Purdue) Pieter Tans (NOAA/ESRL)

  12. 80 km Cirpas Twin Otter • Flight planning guided by STILT forecast met • Lagrangian missions and fossil influence flights with ARM Cessna 206 & CIRPAS Twin Otter (CO2, CH4, CO, Rn, and flasks) • Analysis • Prior estimates of land-surface fluxes from ISOLSM, Duke helicopter, and 10+ surface flux towers • Fossil CO2from CO scaling and (soon) VULCAN (Purdue/LBNL) • Influence functions for Baysian inverse estimation from STILT • Data needs & MCI collaboration opport’s: • High resolution met fields with convective parameters • Background CO2 fields • Other inverse approaches • (contact: MLFischer@lbl.gov) ARM TOP-DOWN: CLASIC Flights, 2007 CO 50 ppb CH4 100 ppb 8 ppm CO2 Duke Helicopter ARM/Berkeley Lab, NOAA-ESRL, NASA AMES, Avissar

  13. 60 m CO2 upwind downwind Aircraft CO2 Aircraft CO Cirpas Twin Otter June 22, 2007 • Flight data show clear anthropogenic and natural influences on atm CO2 upwind and downwind of Oklahoma City • Biosphere-influenced atmospheric CO2 decreases during day due to plant uptake. (60 m tower sees wheat and pasture) • Downwind of Oklahoma City, fossil CO2 plumes elevate CO2 and CO. (Continuous CO and CH4 data not shown) • Analysis of CO, CH4,13C ,and 14C will allow quantitative partitioning of anthropogenic emissions and biosphere fluxes. ARM Top Down: Urban signal, June 2007 ARM/Berkeley Lab, NOAA-ESRL, NASA AMES

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