Polarimetric backscatter sonde profiles - Macquarie Island 2017

This dataset comprises measurements of backscatter intensity from polarimetric backscatter sondes launched at Macquarie Is. from January 2017 to March 2017. They were flown with weather balloons using radiosondes (Vaisala RS92SGP-D) to provide temperature, pressure and humidity data as well as telem...

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Bibliographic Details
Other Authors: HAMILTON, MURRAY WAYNE (hasPrincipalInvestigator), HAMILTON, MURRAY WAYNE (processor), Australian Antarctic Data Centre (publisher)
Format: Dataset
Language:unknown
Published: Australian Antarctic Data Centre
Subjects:
climatologyMeteorologyAtmosphere
CLOUDS
EARTH SCIENCE
ATMOSPHERE
CLOUD LIQUID WATER/ICE
CLOUD MICROPHYSICS
AEROSOLS
POLARSONDE
RADIOSONDES
BALLOONS
GEOGRAPHIC REGION &gt
POLAR
Macquarie Island
Online Access:https://researchdata.ands.org.au/polarimetric-backscatter-sonde-island-2017/989008
https://doi.org/10.4225/15/5a0b8fd0cb4fe
https://data.aad.gov.au/metadata/records/AAS_4308_Polarsonde_Flights
http://nla.gov.au/nla.party-617536
Description
Summary:This dataset comprises measurements of backscatter intensity from polarimetric backscatter sondes launched at Macquarie Is. from January 2017 to March 2017. They were flown with weather balloons using radiosondes (Vaisala RS92SGP-D) to provide temperature, pressure and humidity data as well as telemetry. The data are organised into folders for each flight, the name of which includes the UTC launch time. Within each folder is a calibration file which provides corrections referred to below. All data are in ASCII text format, but the special sensors file is further encoded - a code snippet below indicates how this is decoded. The raw data are affected by a background signal (due to internal pickup on the circuit board) that is measured prior to each launch by covering the photodetectors with opaque black foam, and recording data for ca 15 min, while the polarsonde/radiosonde package is left outside to come to ambient temperature. The Vaisala Digicora system has a quirk in that the timestamps for the special sensor data (the polarsonde) start from when the radiosonde is connected to the ground check station. The radiosonde data timestamps start either from when the pressure sensor detects the launch (EDT file) or have multiple starts during the groundcheck process (FRAWPTU file). Thus time calibration data must be supplied with every launch. This is given as the timestamp in the SPECSENSORS file at which the launch occurred. A MatLab code snippet showing how the lines in the SPECSENSORS file are decoded is available in the download file.

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