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PIs: Harvard, NCAR, Scripps, NOAA

PIs: Harvard, NCAR, Scripps, NOAA Global and seasonal survey of CO 2 , O 2 , CH 4 , CO, N 2 O, H 2 , SF 6 , COS, CFCs, HCFCs, O 3 , H 2 O, CO 2 isotopes, Ar , black carbon, and hydrocarbons (over 80 species). NSF / NCAR Gulfstream V

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PIs: Harvard, NCAR, Scripps, NOAA

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  1. PIs: Harvard, NCAR, Scripps, NOAA • Global and seasonal survey of CO2, O2, CH4, CO, N2O, H2, SF6, COS, CFCs, HCFCs, O3, H2O, CO2 isotopes, Ar, black carbon, and hydrocarbons (over 80 species). • NSF / NCAR Gulfstream V • Five 3-week campaigns over 3 years, across Pacific between 87 N and 67 S • Continuous profiling between surface and 10-14 km • 64 flights, 460 flight hours, 922 profiles • hippo.ucar.edu, www.eol.ucar.edu/hippo, hippo.ornl.gov Canterbury, New Zealand Pago Pago, American Samoa Brooks Range, Alaska

  2. Harvard/Aerodyne - QCLS CO2, CH4, CO, N2O (1 Hz)‏ NCAR AO2 O2:N2 , CO2 (1 Hz)‏ Harvard OMS CO2 CO2 (1 Hz)‏ NOAA CSD O3 O3 (1 Hz)‏ NOAA GMD O3 O3 (1 Hz)‏ NCAR RAF CO CO (1 Hz)‏ NOAA- UCATS, PANTHER GCs (1 per 70 – 200 s) CO, CH4, N2O, CFCs, HCFCs, SF6, CH3Br, CH3Cl, H2, H2O Whole air sampling: NWAS (NOAA), AWAS (Miami), MEDUSA (NCAR/Scripps) O2:N2, CO2, CH4, CO, N2O , other GHGs, CO2 isotopes, Ar/N2, COS, halocarbons, solvent gases, marine emission species, many more Princeton/SWS VCSEL H2O (1 Hz)‏ NOAA SP2 Black Carbon (1 Hz)‏ MTP, wing stores, etc T, P, winds, aerosols, cloud water HIPPO Aircraft Instrumentation – over 100 measurements of over 80 unique species

  3. Altitude Northern Hemisphere seasonal progression: Jan 2009, Mar 2010, Apr 2010, Jun 2011, Jul 2011, Aug 2011, Sep 2011, Oct 2009, Nov 2009 Latitude

  4. Science Highlights: • Critical tests of global atmospheric CO2 transport models that will improve global carbon budgeting • Spatially integrating CO2 data provides constraints on surface fluxes that are independent of biases in atmospheric transport models • NCAR AO2 instrument detected the broad influence of Southern Ocean O2 fluxes for the first time, providing information on ocean biogeochemistry and tests for models of carbon-climate feedbacks • High N2O found by the QCLS instrument aloft over the tropics had not been detected by surface networks, implying significant revisions to global N2O budgets • Enhanced CH4 concentrations near surface of Arctic, emission from biogenic sources or fossil fuel extraction • Asian pollution observed high in the Arctic troposphere, biomass burning plumes from SE Asia contributed to large BC loadings over Pacific, and BC loadings in the Southern Hemisphere were much lower than expected • Short-lived gases emanating from various marine environments across Pacific and from industrial areas • Signatures of global atmospheric transport modes and influence of convection, isentropic transport and Stratosphere/Troposphere exchange

  5. HIPPO Science Team: Harvard University: S. C. Wofsy, B. C. Daube, R. Jimenez, E. Kort, J. V. Pittman, S. Park, R. Commane, B. Xiang, G. Santoni; (GEOS-CHEM) D. Jacob, J. Fisher, C. Pickett-Heaps, H. Wang, K. Wecht, Q.-Q. Wang National Center for Atmospheric Research: B. B. Stephens, S. Shertz, P. Romashkin, T. Campos, J. Haggerty, W. A. Cooper, D. Rogers, S. Beaton , R. Lueb, A. Watt NOAA ESRL and CIRES: J. W. Elkins, D. Fahey, R. Gao, F. Moore, S. A. Montzka, J. P. Schwartz, D. Hurst, B. Miller, C. Sweeney, S. Oltmans, D. Nance, E. Hintsa, G. Dutton, L. A. Watts, R. Spackman, K. Rosenlof, E. Ray UCSD/Scripps: R. Keeling, J. Bent Princeton: M. Zondlo, M. Diao U. Miami: E. A. Atlas TCCON: V. Sherlock, G. Keppel-Aleks, D. Wunsch JPL: M. J. Mahoney; (AIRS) M. Chahine, E. Olsen Cooperating modeling groups: ACTM P. Patra, K. Ishijima; GEMS-MACC R. Engelen; TM3/TM5 Sara Mikaloff-Fletcher

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