1 / 7

WGSF: in situ issues

Working Group on Surface Fluxes In situ issues Elizabeth Kent National Oceanography Centre, Southampton. WGSF: in situ issues. OceanObs'09 Community White Paper

Télécharger la présentation

WGSF: in situ issues

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.


Presentation Transcript

  1. Working Group on Surface FluxesIn situ issuesElizabeth Kent National Oceanography Centre, Southampton

  2. WGSF: in situ issues • OceanObs'09 Community White Paper • Fairall, C. & Co-Authors (2010). "Observations to Quantify Air-Sea Fluxes and Their Role in Climate Variability and Predictability" in Proceedings of OceanObs’09: Sustained Ocean Observations and Information for Society (Vol. 2), Venice, Italy, 21-25 September 2009, Hall, J., Harrison D.E. & Stammer, D., Eds., ESA Publication WPP-306. • http://www.oceanobs09.net/blog/?p=73 • Plenary Paper • Surface Energy, CO2 Fluxes And Sea Ice - led by Gulev and Josey • https://abstracts.congrex.com/scripts/jmevent/abstracts/FCXNL-09A02b-1869230-1-gulev_etal_OceanObs09_revision_final.pdf

  3. WGSF: in situ issues • OceanSITES should be expanded • Maintain existing network measuring radiative fluxes, mean meteorology and precipitation • Priorities for expansion: subpolar, high latitudes (high variability) and regions with severe weather conditions • Improved technology required to measure direct fluxes, including gases and particles • More high quality routine flux measurements • Requires more co-ordination of activities • Mainly Research Vessels but also selected commercial ships • Some vessels making similar measurements to OceanSITES • Others with direct fluxes, currents, directional wave spectra and other sea state information • Focused on high variability regions and gaps in OceanSITES network

  4. WGSF: in situ issues • Voluntary Observing Ships should be maintained and enhanced as a flux observation network • Focus on good quality observations, well characterised with metadata • Need for all elements, including visual clouds, weather and sea state • Improved technology • Increased power and bandwidth for moorings • More robust and capable platforms • Improved & low power gas flux sensors (inc. CO2, O3, SO2 and DMS) • Accurate, low cost, precipitation sensors • Improved humidity sensors for long term deployments

  5. WGSF: in situ issues • Flux observing best practice • WGSF "Flux handbook" ftp://ftp.etl.noaa.gov/user/cfairall/wcrp_wgsf/flux_handbook/ • Standards for sensor choice, siting, calibration and metadata • Improvement of flux parameterisations • Continual process • Observations needed under all conditions • Wide variety of related information required • Better models of ocean near surface temperature change with depth

  6. WGSF: in situ issues • A range of independent, gridded flux datasets is needed • Range of input data sources • Improved construction techniques required, with uncertainties • Wider range of fluxes and related variables (inc. e.g. biogeochemical, particles, whitecap fraction) • Clearly documented, metadata to allow appropriate choice of product for application • Data stewardship • Benefits of aggregation of high quality flux data • Ease of access should be improved • Again, more metadata on dataset characteristics and suitable applications.

  7. WGSF: other issues • Satellite data priorities: • Improved precipitation • Improved near surface air temperature and humidity • Whitecap characteristics • Improved sampling for vector winds (inc high wind and rain) • Improved temporal coverage and higher spatial resolution for passive and active microwave sensors, esp. in coastal regions • Improved validation and parameterisation for NWP and reanalyis model fluxes • Collaboration of observationalists, dataset developers and modellers • High quality flux datasets needed • Facilitated by SURFA, set up by WGSF and WGNE • http://www.ncdc.noaa.gov/oa/rsad/air-sea/surfa.html

More Related