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2 edition of Surface turbulent fluxes over pack ice inferred from TOVS observations found in the catalog.

Surface turbulent fluxes over pack ice inferred from TOVS observations

Surface turbulent fluxes over pack ice inferred from TOVS observations

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Sea ice.,
  • Atmospheric boundary.,
  • Atmospheric models.,
  • Heat flux.,
  • Flux quantization.,
  • Hydrodynamics.

  • Edition Notes

    StatementR.W. Lindsay ... [et al.].
    Series[NASA contractor report] -- NASA/CR-96-207150., NASA contractor report -- NASA CR-207150.
    ContributionsLindsay, R. W., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15547531M

    •The MERRA2 monthly average turbulent fluxes generally capture the same patterns as the satellite observations. •In the ITCZ and storm tracks however, they are systematically weaker by up to 20 W/m2 •The addition of CYGNSS winds tends to result in increased monthly average turbulent fluxes by about W/m2(~3%) over those that use only the. The monthly-averaged energy balance of the Arctic sea-ice was dominated by radiative fluxes, whereas, the sensible and latent heat flux and the energy flux into the surface were rather small. A detailed inspection of the diurnal variations in the turbulent fluxes however indicates that although the monthly-averaged values are small, the hourly-.

    Monthly averaged surface turbulent fluxes (stress, sensible heat, and latent heat) are compared for nine products. Reanalysis products include NCEPR2, JRA25, and ERA Satellite derived products include IFREMER and HOAPS2. Products based on ship and buoy observations include FSU3 and NOC (formerly SOC). Bulk flux algorithms relate the turbulent fluxes to near-surface meteorology •Estimating the fluxes over the (ice-free) oceans reduces to i) retrieving each of the near-surface bulk variables and ii) application of a suitable bulk-flux algorithm (e.g. COARE ). •Obtain ICE-POP regional surface buoy observations for further.

      Observed mean vertical motion results from a mix of physical (Section ) and instrumental problems and it is generally not possible to isolate the influence of instrument offsets, tilt of the sonic anemometer, flow distortion and real vertical ation of the real mean vertical motion through tilt correction, rotates the coordinate system away from a gravity oriented coordinate. Observations were made of turbulent fluxes, turbulent kinetic energy, and the length scales of flux-carrying and energy-containing eddies in the ocean surface boundary layer. A new technique was developed to separate wave and turbulent motions spectrally, using ideas for turbulence spectra that were developed in the study of the bottom boundary.


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Surface turbulent fluxes over pack ice inferred from TOVS observations Download PDF EPUB FB2

Annals q/Glaci%g)' 25 (' J nt ern ati on l Glac ilog cal Soc ty Surface turbulent fluxes over pack ice inferred frolll TOVS observations R. LINDSAY,I ]. FRANCIS/ P. o.G. PERSSON/ D.A. Get this from a library. Surface turbulent fluxes over pack ice inferred from TOVS observations.

[R W Lindsay; United States. National Aeronautics and Space Administration.;]. Surface turbulent fluxes over pack ice inferred from TOVS observationsCited by: 2. A one-dimensional, atmospheric boundary layer model is coupled to a thermodynamic ice model to estimate the surface turbulent fluxes over thick sea ice.

The principal forcing parameters in this time-dependent model are the air temperature, humidity, and wind speed at a specified level (either at 2 m or at mb) and the downwelling surface radiative fluxes.

R.W. Lindsay, J. Francis, P. Persson, D. Roterock, A.J. Schweiger, Surface turbulent fluxes over pack ice inferred from TOVS observations, Annals of Glaciology, /S, 25, (), ().Cited by: Marine Turbulent Boundary Layer Fluxes of Water Vapor, Sensible Heat and Momentum During Gate.- Eddy Fluxes of Momentum and Heat Measured Over the Atlantic Ocean in Gale Force Winds.- Estimation of the Fluxes Over the Ocean by the Covariance and Dissipation Methods.- Estimates of the Surface Fluxes Over the Ocean Abstract.

Micrometeorological methods to measure surface fluxes have several key properties which make them useful in global change research. The methods do not disturb the Vegetation, they can operate for extended periods, and they provide a spatial average of fluxes over typically a few hundred to a few thousand m pments in both hardware and theory have moved the subject forward.

Wind profile and eddy-correlation data obtained at two sites on a melting glacier surface in Iceland during the summer of are presented.

Throughout the experiment the surface roughness increased rapidly from smooth to very rough, with the largest roughness element height obtained being about m. In a layer close to the rough surface we find that the wind speed profiles were disturbed.

Over the period of observations the average net surface heat flux was −75 W m −2 over the pack ice, − W m −2 over the lead, and − W m −2 over the open water. Citing Literature Number of times cited according to CrossRef:   Derivation of Turbulent Surface Fluxes - An Iterative Flux-Profile Method Allowing Arbitrary Observing Heights J.

Launiainen and T. Vihma Department of Geophysics, University of ttelsinki, Fabianinkatu, 24 A, Helsinki, Finland Abstract A method for practical calculation of the turbulent surface fluxes of momentum, sensible heat and latent heat between the atmosphere and.

Book. Jan ; Tools for atmospheric radiative transfer: Streamer and FluxNet Surface turbulent fluxes over pack ice inferred from TOVS observations. Article. Surface Turbulent Fluxes. Surface turbulent fluxes over pack ice inferred from TOVS observations R.W. Lindsay, J.A. Francis, P.O.G.

Persson, D.A. Rothrock and A.J. Schweiger. On the potential use of glacier and permafrost observations for verification of climate models Martin Beniston, Wilfried Haeberli, Martin Hoelzle and Alan Taylor. Lindsay, R.

W., J. Francis, P. Persson, D. Rothrock, and A. Schweiger,Surface Turbulent Fluxes Over Pack Ice Inferred from TOVS Observations, Annals of. Observations of turbulent fluxes of momentum, heat and moisture from low‐level aircraft data are presented. Fluxes are calculated using the eddy covariance technique from flight legs typically ∼40 m above the sea surface.

Over runs of 2 min (∼12 km) from 26 flights are evaluated. Surface turbulent fluxes over pack ice inferred from TOVS observations. Article. Jan ; R.W. Lindsay is coupled to a thermodynamic ice model to estimate the surface turbulent fluxes over. ——, J. Francis, P. Persson, D.

Rothrock, and A. Schweiger, Surface turbulent fluxes over pack ice inferred from TOVS observations. Ann. Glaciol., 25, – R.W. Lindsay, J. Francis, P. Persson, D. Roterock, A.J. Schweiger, Surface turbulent fluxes over pack ice inferred from TOVS observations, Annals of Glaciology, /S, 25, (), ().

The turbulent sensible and latent heat fluxes are the turbulent fluxes of θ and q in energy units of W m-2, ρ 0 c p w!". and ρ 0 Lw!q!respectively. The surface turbulent fluxes (measured just above the interfacial layer) are given special symbols: Surface sensible heat flux (SHF) H S = ρ 0 c p w!".

z=0+ () Surface latent heat flux (LHF. Greenland Ice Sheet-Ocean Interactions; High Latitude Surface Flux Determination of surface turbulent fluxes over leads in arctic sea ice. Geophys. Res.,Andreas, E.

L., P. Persson, J. Hare, A Bulk Turbulent Air–Sea Flux Algorithm for High-Wind, Spray Conditions. Aircraft-based observations of. turbulent heat fluxes to be about W m–2over open water and 44 W m–2 over m thick ice. His results suggest that heat fluxes over leads play an important role in the heat bud-get of the Arctic boundary layer.

The differences in the flux values found by the above studies are likely due to the natur-al variability in the environmental. An Assessment of the Uncertainties in Ocean Surface Turbulent Fluxes in 11 Reanalysis, Satellite-Derived, and Combined Global Datasets wind stresses measured from 12 cruises over the tropics and mid- and high latitudes.

The biases range surface and rawinsonde observations and satellite mea-surements. Such products are called reanalyses.Turbulent fluxes over land in three general circulation models (GCMs) and the three reanalyses are compared with long-term measurements.

Observations were obtained from a variety of sources, including GEBA, Cabauw, The Netherlands, and two newly analysed sites. The intercomparison reveals a wide range of values between the models. The latent heat flux in two of the models shows good .Surface energy balance models are common tools to estimate melt rates of debris-covered glaciers.

In the Himalayas, radiative fluxes are occasionally measured, but very limited observations of turbulent fluxes on debris-covered tongues exist to date. We present measurements collected between 26 September and 12 October from an eddy correlation system installed on the debris-covered .