Index Catalog // ScholarsArchive@OSU

Ice nucleation processes in upper tropospheric wave-clouds observed during SUCCESS

Creator:: Jensen, E. J., Toon, O. B., Tabazadeh, A., Sachse, G. W., Andersen, B. E., Chan, K. R., Twohy, Cynthia, Gandrud, Bruce W., Aulenbach, S. M., Heymsfield, Andrew J., Hallett, J., and Gary, B.
Abstract:: We have compared in situ measurements near the leading-edges of wave-clouds observed during the SUCCESS experiment with numerical simulations. Observations of high supersaturations with respect to ice (> 50%) near the leading edge of a very cold wave cloud (T < -60°C) are approximately consistent with recent theoretical and laboratory...
Resource Type:: Article
Full Text:: . Jensen •, O. B. TooI12, A. Tabazadeh •, G. W. Sachse s, B. E. Anderson • K. R. Chan •, C. W. Twohy 4, B

Uptake of NOy on wave-cloud ice particles

Creator:: Weinheimer, A. J., Campos, T. L., Walega, J. G., Grahek, F. E., Ridley, B. A., Baumgardner, D., Twohy, Cynthia, Gandrud, Bruce W., and Jensen, E. J.
Abstract:: In flight through a wave cloud during SUCCESS on 2 May 1996, simultaneous forward- and aft- facing NOy inlets were used to infer the amount of condensed-phase NOy present on ice particles that were up to a few minutes old. Condensed-phased amounts were 25-75 pptv, or 10-20% of gas-phase NOy....
Resource Type:: Article
Full Text:: . Twohy, and B. Gandrud National Center for Atmospheric Research, Boulder, Colorado E. J. Jensen

Spatial patterns and trends of summertime low cloudiness for the Pacific Northwest, 1996-2017

Creator:: Dye, Alex W., Rastogi, Bharat, Clemesha, Rachel E. S., Kim, John B., Samelson, Roger M., Still, Christopher J., and Williams, A. Park
Abstract:: Summertime low clouds are common in the Pacific Northwest (PNW), but spatiotemporal patterns have not been characterized. We show the first maps of low cloudiness for the western PNW and North Pacific Ocean using a 22‐year satellite‐derived record of monthly mean low cloudiness frequency for May through September and supplemented...
Resource Type:: Article
Full Text:: for the Pacific Northwest, 1996–2017 Alex W. Dye1,2 , Bharat Rastogi3,4, Rachel E. S. Clemesha5 , John

Empirical algorithms to estimate water column pH in the Southern Ocean

Creator:: Williams, N. L., Juranek, L. W., Johnson, K. S., Feely, R. A., Riser, S. C., Talley, L. D., Russell, J. L., Sarmiento, J. L., and Wanninkhof, R.
Abstract:: Empirical algorithms are developed using high-quality GO-SHIP hydrographic measurements of commonly measured parameters (temperature, salinity, pressure, nitrate, and oxygen) that estimate pH in the Pacific sector of the Southern Ocean. The coefficients of determination, R² , are 0.98 for pH from nitrate (pH^N) and 0.97 for pH from oxygen (pH^Ox)...
Resource Type:: Article

Pacific ventilation of the Artic Ocean's lower halocline by upwelling and diapycnal mixing over the continental margin

Creator:: Woodgate, Rebecca A., Aagaard, Knut, Swift, James H., Falkner, Kelly, and Smethie, William M.
Abstract:: Pacific winter waters, a major source of nutrients and buoyancy to the Arctic Ocean, are thought to ventilate the Arctic's lower halocline either by injection (isopycnal or penetrative) of cold saline shelf waters, or by cooling and freshening Atlantic waters upwelled onto the shelf. Although ventilation at salinity (S) >...
Resource Type:: Article
Full Text:: ,1 James H. Swift,2 Kelly K. Falkner,3 and William M. Smethie Jr.4 Received 6 July 2005; revised 23

Transport and coastal zooplankton communities in the northern California Current system

Creator:: Bi, Hongsheng, Peterson, William T., and Strub, Paul T.
Abstract:: Alongshore transport was estimated from the gridded AVISO altimeter data and water level data from NOAA tide gauges (1993–2010) for the northern California Current (NCC) system. The biomass of the cold neritic copepods including Calanus marshallae, Pseudocalanus mimus and Acartia longiremis (dominants in the eastern Bering Sea, coastal Gulf of...
Resource Type:: Article
Full Text:: the northern California Current system Hongsheng Bi,1 William T. Peterson,2 and Paul T. Strub3

Effects of threshold retrievals on estimates of the aerosol indirect radiative forcing

Creator:: Matheson, Mark A., Coakley, James A., and Tahnk, William R.
Abstract:: Empirical estimates of the aerosol indirect radiative forcing often rely on threshold cloud retrievals applied to multispectral satellite imagery data. In such retrievals, pixels having radiances that surpass prescribed thresholds are assumed to be overcast even if they are only partially cloud covered. This assumption leads to cloud visible optical...
Resource Type:: Article
Full Text:: aerosol indirect radiative forcing Mark A. Matheson,1,2 James A. Coakley Jr.,1 and William R. Tahnk1

Multiple trophic levels fueled by recirculation in the Columbia River plume

Creator:: Kudela, Raphael M., Horner-Devine, Alexander R., Banas, Neil S., Hickey, Barbara M., Peterson, Tawnya D., McCabe, Ryan M., Lessard, Evelyn J., Frame, Elizabeth, Bruland, Kenneth W., Jay, David A., Peterson, Jay O., Peterson, William T., Kosro, P. Michael, Palacios, Sherry L., Lohan, Maeve C., and Dever, Edward P.
Abstract:: Large rivers represent gateways for the transport of terrigenous and anthropogenic material to the coastal ocean. Here we document a ∼700 km2 recirculation or bulge associated with the Columbia River plume that retains recently discharged river water sufficiently to create a regional bioreactor. Fueled by a fluvial nitrate source, this...
Resource Type:: Article
Full Text:: the Columbia River plume Raphael M. Kudela,1 Alexander R. Horner‐Devine,2 Neil S. Banas,3 Barbara M

Physical versus biological spring transition: 2005

Creator:: Kosro, P. Michael, 1951-, Peterson, William T., Hickey, Barbara M., Shearman, R. Kipp, and Pierce, Stephen D.
Abstract:: In 2005, the onset of spring conditions in the physics of the coastal ocean (lowered sea level, spin-up of vertically-sheared equatorward coastal jet) came about 50 days later than average off Newport Oregon, on May 24. There was a further delay of 50 days before the subsurface upwelled water penetrated...
Resource Type:: Article
Full Text:: P. Michael Kosro,1 William T. Peterson,2 Barbara M. Hickey,3 R. Kipp Shearman,1 and Stephen D

Hydro‐isostatic deflection and tectonic tilting in the central Andes: Initial results of a GPS survey of Lake Minchin shorelines

Creator:: Bills, Bruce G., de Silva, Shanaka L., Currey, Donald R., Emenger, Robert S., Lillquist, Karl D., Donnellan, Andrea, and Worden, Bruce
Abstract:: Sufficiently large lake loads provide a means of probing rheological stratification of the crust and upper mantle. Lake Minchin was the largest of the late Pleistocene pluvial lakes in the central Andes. Prominent shorelines, which formed during temporary still‐stands in the climatically driven lake level history, preserve records of lateral...
Resource Type:: Article
Full Text:: . Bills, •'2 Shanaka L. de Si!va, 3 Donald R. Currey, 4 Robert S. Emenger, 4 Karl D. Lil!quist, 4's

ScholarsArchive@OSU

Ice nucleation processes in upper tropospheric wave-clouds observed during SUCCESS

Uptake of NOy on wave-cloud ice particles

Spatial patterns and trends of summertime low cloudiness for the Pacific Northwest, 1996-2017

Empirical algorithms to estimate water column pH in the Southern Ocean

Pacific ventilation of the Artic Ocean's lower halocline by upwelling and diapycnal mixing over the continental margin

Transport and coastal zooplankton communities in the northern California Current system

Effects of threshold retrievals on estimates of the aerosol indirect radiative forcing

Multiple trophic levels fueled by recirculation in the Columbia River plume

Physical versus biological spring transition: 2005

Hydro‐isostatic deflection and tectonic tilting in the central Andes: Initial results of a GPS survey of Lake Minchin shorelines

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