1 / 5

NPEO: North Pole Environmental Observatory

Providing sustained observations and support for climate change research in the central Arctic Ocean. Hydrographic surveys, mooring data, and drifting buoy data available.

billyclark
Download Presentation

NPEO: North Pole Environmental Observatory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. NPEO: The North Pole Environmental Observatory Jamie Morison (U of WA) - Lead PI and oceanography Logistics: Andy Heiberg (U of WA) Bottom mooring: Knut Aagaard (U of WA): Oceanography Dick Moritz (U of WA): Sea ice Ice drifting buoys: Takashi Kikuchi (Jamstec): Oceanography Miles McPhee (MRI): Oceanography Jim Overland (NOAA/PMEL): Meteo and sea ice Synoptic hydrographic surveys: Kelly Falkner & Bob Collier (OSU): Hydrochemistry Mike Steele (U of WA): Oceanography

  2. Project Mission & Status • Mission: Provide sustained observations and platform/science support for others in a part of the central Arctic Ocean that shows clear climate change signals • Data: • 65 hydro stations, 5 years of mooring data, 7 years of drifting buoy data • http://nsidc.org/arcss/, http://psc.apl.washington.edu/northpole • Selected Publications: Morison et al., Early results from NPEO, EOS Trans., (2002). Steele, M., J. Morison, W. Ermold, I. Rigor, M. Ortmeyer, and K. Shimada, "Pacific Halocline Water in the Arctic Ocean", J. Geophys. Res., p. C020027, vol. 109, (2004), 10.1029/2003JC002009 Inoue, J., T. Kikuchi, D. Perovich, and J.H. Morison, "A drop in mid-summer shortwave radiation induced by changes in the ice-surface condition in the central Arctic", Geophys. Res. Lett., p. L13603, vol. 32(13), (2005). Kikuchi, T., J. Inoue, and J. Morison, "Temperature difference across the Lomonosov Ridge: Implications for the Atlantic Water circulation in the Arctic Ocean", Geophys. Res. Lett., p. L20604, vol. 32, (2005), 10.1029/2005GL023982 Morison, J. H., M. Steele, T. Kikuchi, K. K. Falkner, and W. Smethie, "The Relaxation of Central Arctic Ocean Hydrography to pre-1990s Climatology", Geophys. Res. Lett., p. L17604, vol. 33(17), (2006), 10.1029/2006GL026826 Inoue, J., and T. Kikuchi, "Outflows of Summertime Arctic Sea Ice Observed by Ice Drifting Buoys and their Linkage with Atmospheric Circulations", J. Meteorol. Soc. Japan, p. 1, vol. 85,6, (2007) Alkire, M. B., K. K. Falkner, I. Rigor, M. Steele, and J. H. Morison, "The return of Pacific waters to the upper layers of the central Arctic Ocean", Deep-Sea Res., p. 1509, vol. I 54, (2007) Overland, J. E.; M. Wang; S.A. Salo, "The Recent Arctic Warm Period", Tellus,, (2007) Bond, N. A., J. E. Overland, and S. A. Salo, "Influence of the Regional Atmospheric Circulation on Observed Shortwave Radiation at the North Pole", J. Geophys. Res., (2008). Submitted, Polyakov, I. V., V. Alexeev, G. I. Belchansky, I. A. Dmitrenko, V. Ivanov, S. Kirillov, A. Korablev, M. Steele, L. A. Timokhov, and I. Yashayaev, "Arctic Ocean Freshwater Changes Over the Past 100 Years and their Causes", J. Climate, p. 364, vol. 21, (2008). Aagaard, K., R. Andersen, J. Swift, and J. Johnson, "A Large Eddy in the Central Arctic Ocean", Geophys. Res. Lett., (2008). Submitted

  3. Coordination Logistics: • International Arctic Buoy Program, NPEO deploys IABP buoys. • Snow sampling is done for projects by Koerner (pollen) and by Grenfell and Warren (soot). • Annual Cycles of Nitrate and Phytoplankton Stocks Using Optics at the NPEO, Christensen and Pegau install a multi-spectral light sensor and bio-sensor arrays on NPEO mooring. • Deep Ocean Mixing by Iker Fir of Bjerknes Center in Bergen Norway makes microstructure measurements of deep mixing. • Beaufort Gyre Exploration Project - Ice-Tethered Profiler buoy deployments • Arctic Bottom Pressure, Jamie Morison, Ron Kwok, and John Wahr install the Arctic Bottom Pressure Recorders near Pole for comparison with GRACE. • Ocean Flux Buoy - buoy at automated station • Switchyard Project - Lincoln Sea oceanography Science: • In addition to science related to all of the above, Polyakov et al. (2004, 2008) have used NPEO data to examine trends in Atlantic Water and freshwater properties.

  4. Future Directions • Hydro Surveys: • Additional sampling for biogeochemical cycling and primary productivity • Digital sampling for nutrients, other parameters • Mooring and drifting buoys: • Profiling sensors instead of fixed-depth sensors • More coordination with AON projects, in particular Switchyard & Beaufort Gyre This Year (April, 2008) • Deployment via Canada (Resolute) & Norway (Longyearbyen) • First use of Russian cargo planes, • hopefully will ease logistics clashes at Russian camp “Borneo”

  5. IPY - Airborne Hydro Surveys Jamie Morison, Mike Steele, Andy Heiberg, Miles McPhee (U of WA) Bob Collier (OSU) & Chris Guay (Cal State) Andrey Proshutinsky (WHOI) Expansion of NPEO springtime airborne surveys with more stations and surveys in Beaufort (starting now) to complement summer stations (e.g. BGOS). Trans-Arctic section across 90W-90E in 2007 in spite of curtailed NPEO operations. Looks like conditions are trending back towards those of the 1990s! Data in NPEO data stream.

More Related