1. 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 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 ZealandBrooks Range, AlaskaPago Pago, American Samoa

2. HIPPO Aircraft Instrumentation – over 100 measurements of over 80 unique species O 2 :N 2, CO 2, CH 4, CO, N 2 O, other GHGs, CO 2 isotopes, Ar/N 2, COS, halocarbons, solvent gases, marine emission species, many more Whole air sampling: NWAS (NOAA), AWAS (Miami), MEDUSA (NCAR/Scripps) O 3 (1 Hz)‏NOAA GMD O 3 T, P, winds, aerosols, cloud waterMTP, wing stores, etc Black Carbon (1 Hz)‏NOAA SP2 H 2 O (1 Hz)‏Princeton/SWS VCSEL CO, CH 4, N 2 O, CFCs, HCFCs, SF 6, CH 3 Br, CH 3 Cl, H 2, H 2 O NOAA- UCATS, PANTHER GCs (1 per 70 – 200 s) CO (1 Hz)‏NCAR RAF CO O 3 (1 Hz)‏NOAA CSD O 3 CO 2 (1 Hz)‏Harvard OMS CO 2 O 2 :N 2, CO 2 (1 Hz)‏NCAR AO2 CO 2, CH 4, CO, N 2 O (1 Hz)‏Harvard/Aerodyne - QCLS

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

5. Science Highlights: Critical tests of global atmospheric CO 2 transport models that will improve global carbon budgeting Spatially integrating CO 2 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 O 2 fluxes for the first time, providing information on ocean biogeochemistry and tests for models of carbon-climate feedbacks High N 2 O found by the QCLS instrument aloft over the tropics had not been detected by surface networks, implying significant revisions to global N 2 O budgets Enhanced CH 4 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

6. 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