LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Renfrew, Ian A.; Anderson, Philip S. (2011)
Publisher: Co-Action Publishing
Journal: Tellus A
Languages: English
Types: Article
Subjects:
The surface climatology of Coats Land, Antarctica, is described through observations from automaticweather stations, from Halley station, from upper air soundings and from satellite remote sensing.Coats Land consists of the Brunt Ice Shelf and the adjoining continent to the south. The topography ofthis region is typical of much of the Antarctic coastal fringes: a modest slope (5% at most) and relativeuniformity across the slope. A basic climatology broken into site and season is presented. In winter, andto an extent in the equinoctial seasons, the region clearly divides into two dynamical regimes. Over theice shelf winds are usually from the east or occasionally from the west, whereas over the continentalslopes winds are from the east to south quadrant. Over the ice shelf the surface layer is about 10 Kcolder, in terms of potential temperature, than on the continent, and is also more stable than on thesteeper parts of the slope. Motivated by case studies, three criteria are developed to select a subset ofthe data that are katabatic in the sense that the flow is believed to be primarily due to a downslopebuoyancy forcing. On the continental slope, the criteria pick out a coherent subset of the data that aretightly clustered in wind speed and wind direction. Typical katabatic winds are from 10◦ to the east ofthe fall line and 7.5 m s<sup>−1</sup> at the steepest part of the slope (5.1 m s−1 higher up). They are rarely morethan 15 m s<sup>−1</sup> in this region; hence their description as ordinary, in contrast with those extraordinarykatabatic regimes that have been the focus of previous studies. The katabatic flow remains close toadiabatic as it moves down the slope, and is relatively dry near the slope foot. We estimate the flow tobe primarily katabatic at most 40–50% of the time, although it may appear to be katabatic, from windspeed and wind direction characteristics, some 60–70% of the time. There is no coherent katabatic-flowsignature on the ice shelf.DOI: 10.1034/j.1600-0870.2002.201397.x
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Anderson, P. S. 1994. A method for rescaling humidity sensors at temperatures well below freezing. J. Atmos. Ocean. Technol. 11, 1388-1391.
    • Ball, F. K. 1960. Winds on the ice slopes of Antarctica. Antarctic meteorology, Pergamon Press, Oxford, 9-16.
    • BAS, SPRI, and WCMC. 1993. Antarctic digital database user's guide and reference manual. Scientific Committee on Antarctic Research Cambridge.
    • Bintanja, R. 2000. Mesoscale meteorological conditions in Dronning Maud Land, Antarctica, during summer: A qualitative analysis of forcing mechanisms. J. Appl. Meteorol. 39, 2348-2370.
    • Bretherton, C. S. and Pincus, R. 1995. Cloudiness and marine bounary layer dynamics in the ASTEX Lagrangian experiments. Part I: Synoptic setting and vertical structure. J. Atmos. Sci. 52, 2707-2723.
    • Bromwich, D. H. 1989a. Satellite analysis of antarctic katabatic wind behaviour. Bull. Am. Meteorol. Soc. 70, 738- 749.
    • Bromwich, D. H. 1989b. An extraordinary katabatic wind regime at Terra Nova Bay, Antarctica. Mon. Wea. Rev. 117, 688-695.
    • Gallee, H. and Schayes, G. 1992. Dynamical aspects of katabatic wind evolution in the Antarctic coastal zone. Boundary-Layer Meteorol. 59, 141-161.
    • Gallee, H. and Pettre, P. 1998. Dynamical constraints on katabatic wind cessation in Adelie Land, Antarctica. J. Atmos. Sci. 55, 1755-1770.
    • Heinemann, G. 1999. The KABEG'97 field experiment: An aircraft-based study of katabatic wind dynamics over the Greenland Ice Sheet. Boundary-Layer Meteorol. 93, 75- 116.
    • Justus, C. G., Hargreaves, W. R., Mikail, A. and Graber, D. 1978. Methods for estimating wind speed frequency distributions. J. Appl. Meteo. 17, 350-353.
    • King, J. C. 1993. Control of near-surface winds over an Antarctic ice shelf. J. Geophys. Res. 98, 12949- 12954.
    • King, J. C. and Anderson, P. S. 1994. Heat and water vapour fluxes and scalar roughness lengths over an Antarctic ice shelf. Boundary-Layer Meteorol. 69, 101-121.
    • King, J. C. and Turner, J. 1997. Antarctic meteorology and climatology. Cambridge University Press, Cambridge, 409 pp.
    • King, J. C. and Anderson, P. S. 1999. A humidity climatology for Halley, Antarctica, based on frost-point hygrometer measurements. Antarctic Sci. 11, 100-104.
    • King, J. C., Varley, M. J. and Lachlan-Cope, T. A. 1998. Using satellite thermal infrared imagery to study boundary layer structure in an Antarctic katabatic wind region. Int. J. Remote Sensing 19, 3335-3348.
    • King, J. C., Anderson, P. S., Smith, M. C. and Mobbs, S. D. 1996. The surface energy and mass balance at Halley, Antarctica during winter. J. Geophys. Res. 101, 19119- 19128.
    • Kodama, Y., Wendler, G. and Ishikawa, N. 1989. The diurnal variation of the boundary layer in summer in Adelie Land, Eastern Antarctica. J. Appl. Met. 28, 16-24.
    • Liu, Z. and Bromwich, D. H. 1997. Dynamics of the katabatic wind confluence zone near Siple Coast, West Antarctica. J. Appl. Met. 36, 97-118.
    • Nakagawa, K. and Shimodoori, H. 1994. The relationship between the thermal belt on the slope of the ice sheet on the Soya coast and the surface inversion layer over Syowa station. Proc. NIPR Symp. Polar Meteorol. Glaciol. 8, 53- 65.
    • Parish, T. R. 1988. Surface winds over the Antarctic continent: a review. Rev. Geophys. 26, 169-180.
    • Parish, T. R. 2001. Topographic forcing of the Antarctic wind field. Sixth conference on Polar Meteorology and Oceanography American Meteorological Society, San Diego, CA, 355-358.
    • Parish, T. R. and Bromwich, D. H. 1987. The surface wind field over the Antarctic ice sheets. Nature 328, 51-54.
    • Parish, T. R. and Waight, K. T. 1987. The forcing of antarctic katabatic winds. Mon. Wea. Rev. 115, 2214- 2226.
    • Parish, T. R. and Bromwich, D. H. 1991. Continental-scale simulation of the Antarctic katabatic wind regime. J. Climate 4, 135-146.
    • Parish, T. R. and Bromwich, D. H. 1998. A case study of Antarctic katabatic wind interaction with large-scale forcing. Mon. Wea. Rev. 126, 199-209.
    • Parish, T. R. and Cassano, J. J. 2001. Forcing of the wintertime Antarctic boundary-layer winds from the NCEP/NCAR global reanalysis. J. Appl. Meteor. 40, 810- 821.
    • Pavia, E. G. and O'Brien, J. J. 1986. Weibull statistics of wind speed over the ocean. J. Climate Appl. Meteorol. 25, 1324-1332.
    • Renfrew, I. A. and Moore, G. W. K. 1999. An extreme cold air outbreak over the Labrador Sea: roll vortices and air-sea interaction. Mon. Wea. Rev. 127, 2379-2394.
    • Schwerdtfeger, W. 1984. Weather and climate of the Antarctic. Elsevier, Amsterdam, 261 pp.
    • Stearns, C. R. and Weidner, G. A. 1993. Sensible and latent heat flux estimates in Antarctica. Antarctic meteorology and climatology: studies based on automatic weather stations. American Geophysical Union, Washington D.C.,109-138.
    • Stearns, C. R., Keller, L. M., Weidner, G. A. and Sievers, M. 1993. Monthly mean climatic data for Antarctic automatic weather stations. Antarctic meteorology and climatology: studies based on automatic weather stations, American Geophysical Union, Washington, D.C.,1- 21.
    • Van den Broeke, M. R. and Van Lipzig, N. P. M. 2002. Factors controlling the near-surface wind field in Antarctica, Mon. Wea. Rev., in press.
    • Van den Broeke, M. R., Van Lipzig, N. P. M. and Van Meijgaard, E. 2002. Momentum budget of the East Antarctic atmospheric boundary layer: results of a regional climate model. J. Atmos. Sci., in press.
    • Wendler, G., Andre, J. C., Pettre, P., Gosink, J. and Parish, T. 1993. Katabatic winds in Adelie coast. Antarctic meteorology and climatology: studies based on automatic weather stations, American Geophysical Union, Washington, D.C., 23-46.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article

Collected from