<?xml version="1.0" encoding="UTF-8"?>
<metadata creationDate="Thu, 24 Mar 2022"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<PID>de.koeln.rrzk/amd.de.sups/rao.mwr00.l2.hua</PID>
	<standard>SAMD v.1.0</standard>
	<language>en</language>
	<project>HD(CP)2</project>
	<dsName version="01">sups_rao_mwr00_l2_hua</dsName>
	<dsTitle>HD(CP)2 long term observations, absolute humidity data of
		Microwave radiometer (no. 00), by Supersite RAO, data version 01</dsTitle>
	<subtitle>Microwave radiometer data -- Daily files of absolute humidity
		profile retrievals</subtitle>
	<dsAuthor>Angela Wargenau, angela.wargenau@dwd.de</dsAuthor>
	<institution>Deutscher Wetterdienst, Meteorologisches Observatorium
		Lindenberg / Richard-Assmann-Observatorium</institution>
	<processingDate>2016-09-27,11:35:33</processingDate>
	<conventions>CF-1.6</conventions>
	<dependencies>sups_rao_mwr00_l1_tb_v01</dependencies>
	<versionHistory>Similar to Version 00, but with corrected Instrument
		Location information: height=none; added Attribut:
		measurement_site=Meteorological Observatory Lindenberg; changed
		variable: ele no dimensions, flag - quality control flags</versionHistory>
	<fileFormat>NETCDF3_CLASSIC</fileFormat>
	<fileAverageSize unit="[MB]">0.2</fileAverageSize>
	<datatype>daily</datatype>
	<level>2</level>
	<licence>For non-commercial use only. This data is subject to the
		HD(CP)2/SAMD data policy to be found at https://doi.org/10.25592/uhhfdm.9823 and in the HD(CP)2/SAMD
		Observation Data Product Standard https://doi.org/10.5281/zenodo.1741363.</licence>
	<provenance>MWR data of Richard-Assmann Observatory, Lindenberg (DWD)</provenance>
	<contactPersons>
		<contactPerson number="1">
			<institute>Richard Assmann Observatory, Lindenberg</institute>
			<forename>Volker</forename>
			<surname>Lehmann</surname>
			<code>+49</code>
			<phone>69 8062 5740</phone>
			<email>volker.lehmann@dwd.de</email>
		</contactPerson>
	</contactPersons>
	<temporalExtent>
		<startDate>2013-01-01</startDate>
		<endDate>2016-10-25</endDate>
	</temporalExtent>
	<temporalResoultion unit="[s]">150</temporalResoultion>
	<horizontalResoultion unit="[m]">none</horizontalResoultion>
	<verticalResoultion unit="[m]">50 - 250</verticalResoultion>
	<location>Richard-Assmann-Observatory, Lindenberg</location>
	<productDescription>The Radiometrics microwave radiometer TP/WVP-3000
		is operating on the roof of the radiation building at the Lindenberg
		observatory. The radiometer observes sky brightness temperatures at
		five frequencies between 22 and 30 GHz for water vapor profiling and
		at seven frequencies between 51 and 59 GHz for temperature profiling.
		The profiles are derived from microwave measurements applying an
		observation-based regression method REGobs. This methods uses MWRP and
		radiosonde measurements from the past to calculate regression
		operators. The method removes systematic errors and produces
		weak-biased retrievals with respect to radiosondes.</productDescription>
	<limitations>none</limitations>
	<comments>none</comments>
	<instruments>
		<instrument number="1">
			<source>TP/WVP-3000 ID:3001</source>
			<latitude unit="[°]">52.209</latitude>
			<longitude unit="[°]">14.122</longitude>
			<altitude unit="[m]">125</altitude>
			<height unit="[m]">none</height>
			<specification>TP/WVP-3000, 12-channel microwave radiometer profiler</specification>
		</instrument>
	</instruments>
	<references>
		<reference number="1">
			<form>paper</form>
			<publicationDate>2003</publicationDate>
			<author>Ware et al.</author>
			<title>A multi-channel radiometric profiler of temperature, humidity
				and cloud liquid.</title>
			<abstract>none</abstract>
			<publish>Radio Sci., 38(4), 8079, doi: 10.1029/2002RS002856</publish>
		</reference>
		<reference number="2">
			<form>paper</form>
			<publicationDate>2001</publicationDate>
			<author>Gueldner, J. and Spaenkuch, D.</author>
			<title>Remote sensing of the thermodynamic state of the atmospheric
				boundary layer by ground-based microwave radiometry</title>
			<abstract>none</abstract>
			<publish>J. Atmos. Ocean. Technol., 18, 925–933</publish>
		</reference>
		<reference number="3">
			<form>paper</form>
			<publicationDate>2013</publicationDate>
			<author>Gueldner, J.</author>
			<title>A model-based approach to adjust microwave observations for
				operational applications: results of a campaign at Munich Airport in
				winter 2011/2012</title>
			<abstract>none</abstract>
			<publish>Atmos. Meas. Tech., 6, 2879-2891,
				doi:10.5194/amt-6-2879-2013</publish>
		</reference>
	</references>
	<keywordLists>
		<keywordList number="1">
			<experimentType>Long term observations</experimentType>
			<measurementType>Local observations</measurementType>
			<mainGroup>Supersites</mainGroup>
			<variableGroup>RAO</variableGroup>
		</keywordList>
		<keywordList number="2">
			<experimentType>Long term observations</experimentType>
			<measurementType>Local observations</measurementType>
			<mainGroup>Instrument groups</mainGroup>
			<variableGroup>MWR</variableGroup>
		</keywordList>
	</keywordLists>
	<dimensions>
		<time> 573 </time>
		<height> 58 </height>
		<nv> 2 </nv>
	</dimensions>
	<variables>
		<variable>
			<name> height </name>
			<dimension> height </dimension>
			<standard_name> height </standard_name>
			<long_name> Height above ground level </long_name>
			<units> m </units>
		</variable>
		<variable>
			<name> time </name>
			<dimension> time </dimension>
			<standard_name> time </standard_name>
			<long_name />
			<units> seconds since 1970-01-01 00:00:00 </units>
		</variable>
		<variable>
			<name> time_bnds </name>
			<dimension> time, nv </dimension>
			<standard_name />
			<long_name />
			<units />
		</variable>
		<variable>
			<name> lat </name>
			<dimension />
			<standard_name> latitude </standard_name>
			<long_name />
			<units> degree_north </units>
		</variable>
		<variable>
			<name> lon </name>
			<dimension />
			<standard_name> longitude </standard_name>
			<long_name />
			<units> degree_east </units>
		</variable>
		<variable>
			<name> zsl </name>
			<dimension />
			<standard_name> altitude </standard_name>
			<long_name> altitude above mean sea level </long_name>
			<units> m </units>
		</variable>
		<variable>
			<name> azi </name>
			<dimension> time </dimension>
			<standard_name> sensor_azimuth_angle </standard_name>
			<long_name />
			<units> degree </units>
		</variable>
		<variable>
			<name> ele </name>
			<dimension />
			<standard_name />
			<long_name> sensor elevation angle </long_name>
			<units> degree </units>
		</variable>
		<variable>
			<name> hua </name>
			<dimension> time, height </dimension>
			<standard_name />
			<long_name> absolute humidity </long_name>
			<units> kg m-3 </units>
		</variable>
		<variable>
			<name> hua_err </name>
			<dimension> height </dimension>
			<standard_name />
			<long_name> standard error of absolute humidity </long_name>
			<units> kg m-3 </units>
		</variable>
		<variable>
			<name> flag </name>
			<dimension> time </dimension>
			<standard_name />
			<long_name> quality control flags </long_name>
			<units />
		</variable>
	</variables>
</metadata>