Complete Conference Book of Abstracts.
** Data may be preliminary and should not be quoted or distributed without first contacting the author **


David Skaggs Research Center, Room GC-402
325 Broadway, Boulder, Colorado 80305
May 26 and May 27, 2004

Wednesday, May 26, 2004 AGENDA

(Only presenter's name is given; please refer to abstract for complete author listing.)
(Click on presentation title to view abstract.)

Session 1 • Global Observations - R. Schnell Slides
08:30 - 08:35 Welcome and Introduction
   D. Hofmann
08:35 - 09:20 Keynote Addres: The NOAA Climate Research Program
   C.J. (Chet) Koblinsky (NOAA Office of Climate Programs, Director)
09:20 - 09:40 Recent Trends in the Growth Rate of Atmospheric Carbon Dioxide
   P.P. Tans (CMDL)
09:40 - 10:00 On the Relation Between Atmospheric Carbonyl Sulfide and Carbon Dioxide
   S.A. Montzka (CMDL)
10:00 - 10:20 Effects of Cloud Scavenging on Aerosol Single-Scattering Albedo
   J.A. Ogren (CMDL)

• 10:20 - 10:40 Break

Session 2 • Global Observations (Continued) - E. Dutton Slides
10:40 - 11:00 Potential Decadal Variations in Surface Solar Irradiance
   E.G. Dutton (CMDL)
11:00 - 11:20 Trends in Tropospheric Ozone
   S.J. Oltmans (CMDL)
11:20 - 11:40 New CMDL International Programs
   R.C. Schnell (CMDL)
11:40 - 12:00 Variation in the Global Direct Radiative Climate Forcing by Well-Mixed Greenhouse Gases Over the Past 25 Years
   D.J. Hofmann (CMDL)

• 12:00 - 13:00 Lunch

Session 3 • Carbon Cycle Greenhouse Gases – P.P. Tans Slides
1300-1320 Influences on the Growth Rate of Atmospheric Methane
   E.J. Dlugokencky (CMDL)
1320-1340 Global Warming Feedbacks from Methane Bubbling Along Expanding North Siberian Lake Margins
   K.M. Walter (Institute of Arctic Biology)
1340-1400 The CMDL Cooperative Global Air Sampling Network: Expansion and Recent Results
   T.J. Conway. (CMDL)

• 14:00 - 14:20 Break

Session 4 • Carbon Cycle Greenhouse Gases (Continued) – P.P. Tans Slides
1420-1440 Measurements of CO2 Mixing Ratio In and Above the PBL Over the Forest Area in Siberia
   T. Machida (NIES, Japan)
1440-1500 Accuracy of CO2 Emissions Estimates for the United States
   T.J. Blasing (Oak Ridge Nat. Lab.)
1500-1520 Estimating Monthly Gridscale CO2 Fluxes Using a Geostatistical Inverse Modeling Approach
   A.M. Michalak (UCAR Postdoctoral Fellow)
1520-1540 Regional CO2 Flux Estimates for North America
   W. Peters (CIRES, CMDL)

• 15:40 - 15:45 Award Presentation

• 16:00 - 18:30 Poster Session (Room GB-124)

Thursday, May 27, 2004 AGENDA

(Only presenter's name is given; please refer to abstract for complete author listing.)
(Click on presentation title to view abstract.)

Session 5 • Ozone and Water Vapor – S.J. Oltmans Slides
08:30 - 08:50 GTN-P Monitoring Network: Detection of a 3°C Permafrost Warming in Northern Alaska During the 1990s
   G.D. Clow (U.S. Geological Survey)
08:50 - 09:10 Southern Hemisphere Additional Ozonesondes (SHADOZ): Data Quality and Characteristics of Tropical Ozone Behavior
   S.J. Oltmans (CMDL)
09:10 - 09:30 Boundary-Layer Ozone Production at South Pole, Antarctica
   D. Helmig (University of Colorado, INSTAAR, PAOS)
09:30 - 09:50 Accuracy and Performance Requirements for Frostpoint Hygrometers in Trend Detection and Network Operations
   H. Vömel (CIRES, CMDL)

• 09:50 - 10:20 Break

Session 6 • Aerosols and Radiation – J.A. Ogren Slides
10:20 - 10:40 Correlated Trends in Western Arctic Snow Cover and Sea Ice Distribution
   R.S. Stone (CIRES, CMDL)
10:40 - 11:00 Observation of Enhanced Water Vapor in the Asian Dust Layer and Its Effect on the Atmospheric Radiative Heating and Cooling Rates
   S.-W. Kim (Seoul National Univ.)
11:00 - 11:20 Dynamics of Mercury in the Barrow Springtime Polar Environment
   S.B. Brooks (NOAA ATD, Oak Ridge, TN)
11:20 - 11:40 Tests of Long-Term Stability in IMPROVE Trend Measurements
   W.H. White (Crocker Nuclear Lab., University of California, Davis)

• 11:40 - 13:00 Lunch

Session 7 • Global Observations and Related Topics – E.G. Dutton and R.C. Schnell Slides
13:00 - 13:20 Using Trajectories as an Air Transport Database for Studies of Atmospheric Monitoring
   J. Zeng (NIES, Japan)
13:20 - 13:40 Mt. Kenya GAW Station Setup and Initial Results
   J.K. Rotich (Kenya Meteorological Dept.)
13:40 - 14:00 Station Report: GEOSummit, the Greenland Environmental Observatory
   J.F. Burkhart (GEOSummit, University of California, Merced)
14:00 - 14:20 Transcontinental Observations into the Chemistry of the Atmosphere (TROICA): Main Results and Prospects
   N.F. Elansky (A.M. Obukhov Institute of Atmospheric Physics, Russia)
14:20 - 14:40 Quality Assurance/Science Activity Centre Germany as Part of WMO/GAW: Overview on Structure and Responsibilities
   K. Mannschreck (UFS Schneefernerhaus, Germany)

• 14:40 - 15:00 Break

Session 8 • Halocarbons and N2O – J.H. Butler Slides
15:00 - 15:20 Monthly Regional Estimates of the Global N2O Surface Flux from 1997-2001
   A. Hirsch (CIRES, CMDL)
15:20 - 15:40 Improvements in N2O Calibration of Secondary Compressed Gas Standards
   B.D. Hall (CMDL)
15:40 - 16:00 A Significant and Substantial Decrease in Tropospheric Organic Bromine
   J.H. Butler (CMDL)
16:00 - 16:20 Persistent Emissions of Halocarbons in the United States of America and Canada
   D.F. Hurst (CIRES, CMDL)
16:20 - 16:40 Development of In Situ Gas Chromatograph – Mass Selective Detector for the Purpose of Measuring Long-Range Pollution Transport from Asia
   J.L. Neu (NRC Fellow)

Poster Session Wednesday, May 26, 2004 AGENDA

(Only presenter's name is given; please refer to abstract for complete author listing.)
(Click on presentation title to view abstract.)

• Carbon Cycle
P1 Uncertainty Analysis of CO2 Standard Transfer in CMDL from 1979 to 2004
   C. Zhao (CIRES, CMDL)
P2 Sensitivity of Carbon Flux Estimates to Past, Present, and Future Observational Networks
   L.M. Bruhwiler (CMDL)
P3 Development of a High Precision Detection Capability for Recently Added Fossil Fuel CO2 in the Atmosphere Using 14C
   J.C. Turnbull (INSTAAR)
P4 In situ CO Measurements at Zugspitze (47°N, 11°E)
   H.E. Scheel (Forschungzentrum Karlsruche)
P5 Evidence for Long-Term Changes in Carbon Monoxide
   P.C. Novelli (CMDL)
P6 Estimates of the Sampling Footprints of Current and Future Tall-Tower Continuous Monitoring Sites
   A.E. Andrews (CMDL)
P7 Mongolian Carbon Cycle Gas Measurements
   B. Borkhuu (Mongolian Institute of Hydrology and Meteorology)
• Ozone and Water Vapor Poster
P8 Progress of the Tropospheric Ozone Aircraft Measurement Program
   B.A. Vasel (CIRES, CMDL)
P9 Towards a Better Knowledge of Umkehr Measurements: A Detailed Study of Data from Ten Dobson Intercomparisons
   I. Petropavlovskikh (CIRES)
P10 Ozone Profiles Measured at South Pole Station During the 2003 Ozone Hole
   B.J. Johnson (CMDL)
P11 Evolution of the CMDL Frostpoint Hygrometer, 1998 to Present
   D.M. Sherman (CIRES, CMDL)
P12 Preliminary Characterization of Calibration Errors in the CMDL Water Vapor Record
   E.G. Hall (CIRES, CMDL)
P13 Upper Tropospheric Water Vapor Measurements with Raman Lidar at MLO
   J.E. Barnes (CIRES, CMDL)
• Aerosols and Radiation
P14 Finding a Method to Measure the Black Carbon State of Mixture in Atmospheric Aerosol
   M. Fiebig (Humboldt Fellow)
P15 Characterization of Aerosol Optical Properties Using Polar Nephelometry
   M.E. Trudeau (CIRES, CMDL)
P16 Reconstruction of the Interhemispheric Methane 13C Gradient from Polar Firn Air
   M.E. Trudeau (CIRES, CMDL)
P17 An Empirical Approach to Aerosol Model Development for Radiative Transfer Calculations
   A.M. Payton (CIRES, CMDL)
P18 Development of a Diffuse Horizontal Shortwave Irradiance Standard for the BSRN and ARM
   J. Michalsky (ARL)
P19 An Automated Washing and Ventilation System for Surface Energy Budget Monitoring Instrumentation
   D. Nelson (CMDL)
• Halocarbons, N2O, and Hydrocarbons
P20 Development of a New Method for the Study of the Global Distribution of the OH-Radical
   J. Pollmann (INSTAAR)
P21 Trans-siberian Observations Into the Chemistry of the Atmosphere (TROICA)-8: the Second CMDL Trace Gas Measurement Campaign in Russia
   P. Romashkin (CIRES, CMDL)
P22 Can New In Situ Measurements Offer Insight Into Tropospheric and Stratospheric Transport?
   F.L. Moore (CIRES, CMDL)
P23 The Radiatively Important Trace Species Data Recovery Project
   J.D. Nance (CIRES, CMDL)
P24 Monitoring of the NOx/O3 Photostationary State: Local Impacts or Systematic Deviations?
   K. Mannschreck (UFS Schneefernerhaus)
P25 The GAW Global Station Zugspitze/Hohenpeissenberg: Instrumentation and Scientific Aims
   K. Mannschreck (UFS Schneefernerhaus)
P26 Trends of Halocarbons and Implications for Total Chlorine
   G. Dutton (CIRES, CMDL)
P27 North Atlantic Long-Range Transport Research at Pico Mountain, Azores, Portugal
   D. Helmig (INSTAAR)
• Radon, Satellite Measurements, and Precipitation
P28 A Network of Radon Detectors at Ground Stations in East Asia
   W. Zahorowski (Australian Nuclear Science and Technology Org.)
P29 A Study of East Asian Land Fetch at MLO Using Hourly Radon Observations and Trajectory Analysis (2001-2003)
   W. Zahorowski (Australian Nuclear Science and Technology Org.)
P30 The New ANSTO Radon Detector at MLO
   W. Zahorowski (Australian Nuclear Science and Technology Org.)
P31 Community Collaborative Rain and Hail Study (CoCo RaHS): Monitoring Local Precipitation in Colorado
   N. Doesken (CSU)
P32 Outreach: Bringing Antarctica to the Classroom
   L. Lock (CMDL)
P33 Towards Improved Microwave Remote Sensing: The Study and Observation of Tropical Cyclones (TC) from Space
   B. Maggero (Kenya Meteorological Services)
P34 TMI/VIRS Derived Turbulent Heat Fluxes over the Tropical Pacific Ocean
   B. Maggero (Kenya Meteorological Services)
P35 Variability in the Observed Tropospheric Ozone Over Equatorial Eastern Africa: An Analysis of Nairobi Shadoz Ozonesone Data
   W. Ayoma (Kenya Meteorological Services)