Fluxes and energy budget at Dome-C, Antarctica, between 1996 and 2003
Entry ID:
Bound_layer_char_at_Dome-C
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Summary
Abstract:
The Antarctic Planetary Boundary Layer (PBL) plays a crucial role in connecting the atmospheric, the oceanic, and cryospheric components of the Antarctic climatic system. The knowledge of the Antarctic PBL is still poor in terms of theoretical understanding as well as in terms of available data. The annual radiative balance is negative and therefore the air layer close to the surface is cooled for ... most of the year. In spite of low surface temperature, a regular
day time boundary layer evolution was observed, as well as a convective
activity. It became crucial to understand these processes and study processes
connected to the formation of the inversion wind, to investigate the
relationship between the surface energy balance and katabatic wind occurrence,
to assess the capability to detect the vertical motions associated with the
secondary meridional circulation, on the base of the interaction between the
large scale and the low level circulation, and with position of the polar
vortex.
Several campaigns have been carried out on the Antarctic plateau in the
station of Dome-C to achieve to answer to the cited problems as well as to test
the instrumentation to be deployed in a future long term mission. Depending on
the mission objective, several instruments could be included. Based on the
previous Antarctic experience of Sodar, but limited by the logistics two
vertical antenna Doppler minisodar (MS), to study the mixing layer height (MH)
and the associated vertical wind (W) field evolution was first deployed. A
three meter micromet mast (MM) with a sonic anemometer (SA) and a fast
hygrometer (FH) KH20 to estimate the turbulent fluxes (TF), a net radiation
station (NR) to calculate the radiation budget (RB), a ground temperature
sensors station (GT) and a flux plate (FP) to determine the energy balance (EB)
at the interface between the atmosphere and the snow covered soil were
installed. Micrometeorological tower (MT) equipped with sensors to measure the
wind speed and direction (WD) , air temperature (TA), humidity (RH), radiation
budged, soil temperature and heat fluxes were mounted. Also a microlidar (ML)
for the aerosols and ice particles (IP) profiling, and a passive microwave
radiometer (MTP-5) for the PBL temperature profiling (TP) were used.
Below, the periods, the instruments deployed and parameter measured at the
Italian-French base of Dome Concordia are listed:
DATE: 20/01/97-30/01/97:
PLATFORM: MS, MM;
INSTRUMENT: 2 ant.MS, SA, FH, NR, GT, FP;
PARAMETER (range/ height): MH (400m), WD, W, TF, RB, EB (3m).
DATE: 08/12/99-03/02/00:
PLATFORM: MS, MM;
INSTRUMENT: 2 ant. MS, SA, NR, GT, FP;
PARAMETER: MH( 400m), WD, W, TF, RB, EB (3m).
DATE: 18/11/02-17/1202:
PLATFORM: MTP-5,ML;
INSTRUMENT: MTP-5,ML;
PARAMETER: TP (600 m), IP (500 m) 
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
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N: -75.1
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S: -75.1
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E: 123.3
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W: 123.3
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Min Altitude:
1.25M
Max Altitude:
700.0M
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Data Set Citation
Dataset Originator/Creator:
National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Dataset Title:
NMC GTS Surface Meteorological Observations - Land (DSI-6104)
Dataset Release Date:
Unknown
Data Presentation Form:
tabular digital data
Online Resource:
http://www.ncdc.noaa.gov
Temporal Coverage
Start Date:
1975-02-11
Stop Date:
1999-10-12
Quality
ATTRIBUTE ACCURACY REPORT: Not provided
LOGICAL CONSISTENCY REPORT: Unknown
COMPLETENESS REPORT: Completeness information not available.
LINEAGE/PROCESS STEP:
PROCESS DESCRIPTION: Unknown
PROCESS DATE: Unknown
Access Constraints
ACCESS CONSTRAINTS: None
DISTRIBUTION LIABILITY: Every effort has been made to ensure that these data are accurate and reliable within the limits of current NOAA quality control procedures. NOAA can only certify that the data provided to its customers is an authentic copy of the records which were accepted for inclusion in NOAA archives. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Use Constraints
None
Data Set Progress
COMPLETE
Personnel
Role:
DIF AUTHOR
Phone:
828-271-4800
Fax:
828-271-4876
Email:
ncdc.metadata at noaa.gov
Contact Address:
151 Patton Avenue
Room 468
City:
Asheville
Province or State:
North Carolina
Postal Code:
28801-5001
Country:
USA
Creation and Review Dates
DIF Creation Date:
2006-06-27
Last DIF Revision Date:
2009-04-20
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