Lidar Studies of Atmospheric Structure, Dynamics and Climatology

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Klekociuk, A.
Publication_Date: Unknown
Title: Lidar Studies of Atmospheric Structure, Dynamics and Climatology
Edition:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name: CAASM Metadata
Issue_Identification:
Publication_Information:
Publication_Place:
Publisher: Australian Antarctic Data Centre
Other_Citation_Details:
Online_Linkage: https://data.aad.gov.au/aadc/metadata/metadata_redirect.cfm?md=/AMD/AU/lidar
Description:
Abstract:
The lidar profiles density, temperature, wind velocity and aerosol loading from the lower troposphere to the upper mesosphere, depending on operating mode. Two main measurement techniques are employed. Firstly, traditional Rayleigh backscatter analysis yields temperature profiles above the top of the stratospheric aerosol layer (greater than about 27km altitude). The temperatures are obtained from lidar-derived density profiles, calibrated with in-situ radiosonde data below 40km altitude, using the standard hydrostatically-constrained perfect gas law model. When available, hydroxyl-layer temperatures obtained locally by a Czerny-Turner spectrograph are used as an upper boundary condition on the temperature retrieval algorithm. Rayleigh backscatter can be detected from altitudes as high as 100km, although useful temperatures are normally limited to below 80km. Observations of rotational-vibrational Raman backscatter from molecular oxygen or nitrogen are used to extend the temperature profiles into the lower stratosphere and upper troposphere. Profiles of aerosol-loading are derived from standard scattering-ratio analysis, allowing identification of clouds in the upper troposphere, stratosphere (Polar Stratospheric Clouds) and mesosphere (Polar Mesospheric Clouds). Secondly, spectral scans of laser backscatter are obtained with a high-resolution Fabry-Perot spectrometer. These are used to infer the line-of-sight wind speed and temperature by using the Doppler effect. Observations along 'cardinal point' lines-of-sight provide information on wind direction. In general, Doppler measurements are restricted to altitudes below about 70km based on signal detection considerations. Some information on aerosol loading is obtained from analysis of the spectral properties of the backscatter. The lidar is capable of both day and night measurements covering a large altitude range, and in so doing will provide information for the study of climate change and a range of atmospheric phenomena on a variety of spatial and temporal scales. Taken from the 2008-2009 Progress Report: Progress against objectives: At Davis, lidar measurements of temperature and aerosol properties were acquired for the troposphere, stratosphere and mesosphere. Additionally, ozone data were acquired for the troposphere and lower stratosphere. Ongoing analyses of these data is providing new information on the composition, dynamics and climate of the polar atmosphere. During the reporting period, continued progress was achieved in international collaborative studies of Polar Stratospheric Cloud microphysics as part of the International Polar Year, and measurements of Polar Mesospheric Clouds for the Aeronomy of Ice in the Mesosphere (AIM) satellite mission. Both of these activities contribute to all 4 goals of the project. Taken from the 2009-2010 Progress Report: Progress against objectives: New data were obtained for the study of the long-term climate in the Antarctic middle atmosphere (5-95km altitude), and atmospheric phenomena under extreme physical conditions. The highlights were: (1) Detailed measurements of ice clouds in the summer mesopause region for validation of climate models. (2) Further measurements of the properties and dynamics of Polar Stratospheric Clouds for research aimed at improving projections of the recovery of the Ozone Hole. (3) Initial measurements for a new study of the interactions between the troposphere and stratosphere which is aimed at improved knowledge of climate processes in the tropopause region.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Alexander, S.P., Klekociuk, A.R., Tsuda, T. (2009) Gravity wave and orographic wave activity observed around the Antarctic and Arctic stratospheric vortices by the COSMIC GPS-RO satellite constellation Journal of Geophysical Research 114. D17103, doi:10.1029/2009JD011851; [Ref:13918]; AAS Projects 737, 3140
Supplemental_Information:
REFERENCE: Dupuy, E., Walker, K.A., Kar, J., Boone, C.D., McElroy, C.T., Bernath, P.F., Drummond, J.R., Skelton, R., McLeod, S.D., Hughes, R.C., Nowlan, C.R., Dufour, D.G., Zou, J., Nichitiu, F., Strong, K., plus 95 others (including Klekociuk, A.R.), (2009) Validation of ozone measurements from the Atmospheric Chemistry Experiment (ACE) Atmospheric Chemistry and Physics 9. 287-343; [Ref:13579]; AAS Project 737
Supplemental_Information:
REFERENCE: Evtushevsky, O., A. Klekociuk, A., Grytsai, A., Milinevsky, G and Lozitsky V. (2010). Influences on the tropopause in the polar regions by the troposphere and stratosphere during winter and spring, International Journal of Remote Sensing (accepted).
Supplemental_Information:
REFERENCE: Kawatani, Y., Takahashi, M., Sato, K., Alexander, S.P., Tsuda, T. (2009) Global distribution of atmospheric waves in the equatorial upper troposphere and lower stratosphere: AGCM simulation of sources and propagation Journal of Geophysical Research 114. D01102, doi:10.1029/2008JD010374; [Ref:13575]; AAS Projects 737, 3140
Supplemental_Information:
REFERENCE: Klekociuk, A.R., Bombardieri, D.J., Duldig, M.L., Michael, K.J. (2009) Atmospheric chemistry effects of the 20 January 2005 solar proton event Advances in Geosciences 14:Solar Terrestrial. 305-319; [Ref:13962]; AAS Projects 29, 737
Supplemental_Information:
REFERENCE: Lozitsky V., Grytsai A., Klekociuk A. and Milinevsky G. (2010). Comparison of total ozone column distribution over Northern and Southern high latitudes, International Journal of Remote Sensing (accepted).
Supplemental_Information:
REFERENCE: Morris, R.J., Klekociuk, A.R., Latteck, R., Singer, W., Holdsworth, D.A., Murphy, D.J. (2009) Inter-hemispheric asymmetry in polar mesosphere summer echoes and temperature at 69 degrees latitude Journal of Atmospheric and Solar-Terrestrial Physics 71. 464-469; [Ref:13622]; AAS Projects 674, 737, 2325
Supplemental_Information:
REFERENCE: Morris, R.J., Klekociuk, A.R., Holdsworth, D.A. (2009) Low latitude 2-day planetary wave impact on austral polar mesopause temperatures: revealed by a January diminution in PMSE above Davis, Antarctica Geophysical Research Letters 36. L11807, doi:10.1029/2009GL037817; [Ref:13797]; AAS Projects 674, 737, 2325
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010207
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 77.95
East_Bounding_Coordinate: 77.97
North_Bounding_Coordinate: -68.56
South_Bounding_Coordinate: -68.58
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL BACKSCATTER
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL EXTINCTION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL OPTICAL DEPTH/THICKNESS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > AEROSOL PARTICLE PROPERTIES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AEROSOLS > CLOUD CONDENSATION NUCLEI
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ALTITUDE > GEOPOTENTIAL HEIGHT
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ALTITUDE > STRATOPAUSE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > DIFFERENTIAL PRESSURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE > GRAVITY WAVE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > UPPER LEVEL WINDS
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > VERTICAL WIND MOTION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD HEIGHT
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD TYPES
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD VERTICAL DISTRIBUTION
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > SCATTERING
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC RADIATION > TRANSMITTANCE
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE
Theme_Keyword: FIXED OBSERVATION STATIONS
Theme_Keyword: LIDAR > LIGHT DETECTION AND RANGING
Theme_Keyword: SPECTROMETERS
Theme_Keyword: Air Density
Theme_Keyword: Atmosphere
Theme_Keyword: Atmospheric Density
Theme_Keyword: Atmospheric Tide
Theme_Keyword: Density
Theme_Keyword: Doppler
Theme_Keyword: Gravity Wave
Theme_Keyword: Lidar
Theme_Keyword: Mesosphere
Theme_Keyword: Nlc
Theme_Keyword: Noctilucent Cloud
Theme_Keyword: Planetary Wave
Theme_Keyword: Polar Stratospheric Cloud
Theme_Keyword: Psc
Theme_Keyword: Raman
Theme_Keyword: Rayleigh
Theme_Keyword: Stratosphere
Theme_Keyword: Temperature
Theme_Keyword: Troposphere
Theme_Keyword: Wind
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > ANTARCTICA > DAVIS
Place_Keyword: GEOGRAPHIC REGION > POLAR
Place_Keyword: VERTICAL LOCATION > MESOSPHERE
Place_Keyword: VERTICAL LOCATION > STRATOSPHERE
Place_Keyword: VERTICAL LOCATION > TROPOSPHERE
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: 60 Seconds
Access_Constraints: See the investigator for details.
Use_Constraints:
This data set conforms to the PICCCBY Attribution License (http://creativecommons.org/licenses/by/3.0/). Please follow instructions listed in the citation reference at the provided URL when using these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: ANDREW KLEKOCIUK
Contact_Position: INVESTIGATOR
Contact_Position: TECHNICAL CONTACT
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Australian Antarctic Division
Address: 203 Channel Highway
City: Kingston
State_or_Province: Tasmania
Postal_Code: 7050
Country: Australia
Contact_Voice_Telephone: +61 3 6232 3382
Contact_Facsimile_Telephone: +61 3 6232 3496
Contact_Electronic_Mail_Address: andrew.klekociuk@aad.gov.au
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Data collected by the LIDAR system include the density, temperature, wind velocity and aerosol loading as a function of altitude from near the ground (typically, above about 15 km altitude) to the upper mesosphere. The spatial and temporal resolutions of the data depend on the operating mode of the lidar, time of day, and local meteorological conditions. Taken from the 2008-2009 Progress Report: Field work: All fieldwork was undertaken at Davis. During the review period, the lidar was operated as often as practicable during suitable weather conditions, with approximately 1200 hours of data collected between June 2008 and April 2009. The fieldwork milestones were; (1) July-October 2008 - special high resolution observations of Polar Stratospheric Clouds, coordinated with observations of the CALIPSO satellite mission and flights of balloon-borne ozonesondes, (2) November 2008 to February 2009 - special day and night profiling for Polar Mesospheric Clouds in coordination with MST radar operations and AIM satellite overpasses, (3) ongoing - coordination of lidar observations with ozonesonde and special radiosonde flights provided by the Bureau of Meteorology, and Antarctic lidar measurements conducted at Dumont d'Urville (by France) and McMurdo (by Italy). Progress with data collection met expectations. Laboratory activity/analysis: Analysis activity, including data checking, was undertaken primarily at AAD Head Office. Additional data checking was performed at Davis and in the case of ozonesonde data, by the Bureau of Meteorology in Melbourne. The progress of this activity has been as expected. The main activities were (1) basic data checking to ensure that the instrument and data collection software was performing as expected, (2) validation of temperature data where possible using in-situ measurements from BoM radiosondes and soundings from satellite missions (Aqua, TIMED, Aura, COSMIC, ACE) and assimilated global data sets (UKMO, NCEP, GEOS4), (3) analysis of backscatter from Polar Stratospheric Clouds (PSC) and Polar Mesospheric Clouds (PMC), and (4) analysis of ozone data from ozonesondes. All of these activities are on-going. Taken from the 2009-2010 Progress Report: Field work: All fieldwork was undertaken at Davis. The lidar was operated by Dr Simon Alexander (2009 wintering Head Office Research Scientist) and Jeff Cumpston (2010 wintering Lidar Scientist), with additional involvement by Dr Andrew Klekociuk (2009/10 summer), Theo' Davis (La Trobe University, 2008/09 and 2009/10 summer) and Roland Stehle (2009 wintering engineer). During the review period, the lidar was operated as often as practicable during suitable weather conditions, with approximately 385 hours of data collected between July 2009 and April 2010. The amount of data collected was lower than recent years. The fieldwork milestones were; (1) Jul-Oct 2009 - special high resolution observations of the Upper Troposphere- Lower Stratosphere using the Raman technique for temperature profiling, (2) Nov 2009 to Feb 2010 - special day and night profiling for Polar Mesospheric Clouds in coordination with MST radar operations and AIM satellite overpasses, (3) ongoing - coordination of lidar observations with ozonesonde and special radiosonde flights provided by the Bureau of Meteorology, and Antarctic lidar measurements conducted at Dumont d'Urville (by France) and McMurdo (by Italy). A high power laser was acquired to replace the existing laser to improve operational reliability; the new laser was successfully installed at Davis during the 2009/10 summer. Laboratory activity/analysis: Analysis activity, including data checking, was undertaken primarily at AAD Head Office. Additional data checking was performed at Davis and in the case of ozonesonde data, by the Bureau of Meteorology in Melbourne. The progress of this activity has been as expected. The main activities were (1) basic data checking to ensure that the instrument and data collection software was performing as expected, (2) validation of temperature data where possible using in-situ measurements from BoM radiosondes and soundings from satellite missions (Aqua, TIMED, Aura, COSMIC, ACE) and assimilated global data sets (UKMO, NCEP, GEOS5), (3) analysis of backscatter from Polar Stratospheric Clouds (PSC) and Polar Mesospheric Clouds (PMC), and (4) analysis of ozone data from ozonesondes. All of these activities are on-going.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0
Longitude_Resolution: 0
Geographic_Coordinate_Units: Decimal degrees
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: Not Available
Altitude_Resolution: 18.7 m
Altitude_Distance_Units: Not Available
Altitude_Encoding_Method: Implicit coordinate
Depth_System_Definition:
Depth_Datum_Name: Not Available
Depth_Resolution: 18.7 m
Depth_Distance_Units: Not Available
Depth_Encoding_Method: Implicit coordinate
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: AU/AADC > Australian Antarctic Data Centre, Australia
Contact_Person: DATA OFFICER AADC
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Australian Antarctic Division
Address: 203 Channel Highway
City: Kingston
State_or_Province: Tasmania
Postal_Code: 7050
Country: Australia
Contact_Voice_Telephone: +61 3 6232 3244
Contact_Facsimile_Telephone: +61 3 6232 3351
Contact_Electronic_Mail_Address: metadata@aad.gov.au
Resource_Description: lidar
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://data.aad.gov.au
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://secure3.aad.gov.au/proms/public/projects/r...
Access_Instructions:
Public information for ASAC project 737
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.aad.gov.au/default.asp?casid=222
Access_Instructions:
Information about LIDAR, and its intended operation
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://data.aad.gov.au/aadc/metadata/citation.cfm?...
Access_Instructions:
Citation reference for this metadata record and dataset
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 19991007
Metadata_Review_Date: 20131217
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: ANDREW KLEKOCIUK
Contact_Position: INVESTIGATOR
Contact_Position: TECHNICAL CONTACT
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Australian Antarctic Division
Address: 203 Channel Highway
City: Kingston
State_or_Province: Tasmania
Postal_Code: 7050
Country: Australia
Contact_Voice_Telephone: +61 3 6232 3382
Contact_Facsimile_Telephone: +61 3 6232 3496
Contact_Electronic_Mail_Address: andrew.klekociuk@aad.gov.au
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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