<?xml version="1.0" encoding="UTF-8"?>
<metadata creationDate="Wed, 22 June 2022"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<PID>de.hamburg.icdc/amd.de.fval/uhh.wrxFLK00.l2.rr</PID>
	<standard>SAMD v2.1</standard>
	<language>en</language>
	<project>FESSTVAL</project>
	<dsName version="00">fval_uhh_wrxFLK00_l2_rr</dsName>
	<dsTitle>Rainfall rates estimated from X-Band radar observations during FESSTVaL 2021, data version 00</dsTitle>
	<subtitle>DOI:10.25592/uhhfdm.10090</subtitle>
	<dsAuthor>Finn Burgemeister, Marco Clemens, and Felix Ament</dsAuthor>
	<institution>Meteorological Institute, Center for Earth System Research
		and Sustainability (CEN), Universität Hamburg, and Max Planck
		Institute for Meteorology, Hamburg 
	</institution>
	<conventions>CF-1.6 where applicable</conventions>
	<dependencies>external</dependencies>
	<versionHistory></versionHistory>
	<fileFormat>NETCDF4</fileFormat>
    <region>de</region>
	<fileAverageSize unit="[MB]">100</fileAverageSize>
	<datatype>daily</datatype>
	<level>2</level>
	<licence>This data is subject to the FESSTVaL data policy to be found
		at https://doi.org/10.25592/uhhfdm.9890 and in the SAMD Observation
		Data Product Standard https://doi.org/10.25592/uhhfdm.9902 .</licence>
	<provenance>none</provenance>
	<contactPersons>
		<contactPerson number="1">
			<institute>Meteorological Institute, Center for Earth System Research
				and Sustainability (CEN), Universität Hamburg 
			</institute>
			<forename>Clemens</forename>
			<surname>Marco</surname>
			<code>+49</code>
			<phone>40 42838 0</phone>
			<email>marco.clemens@uni-hamburg.de</email>
		</contactPerson>
	</contactPersons>
	<temporalExtent>
		<startDate>2021-06-03</startDate>
		<endDate>2021-08-30</endDate>
	</temporalExtent>
	<temporalResoultion unit="[s]">30</temporalResoultion>
	<horizontalResoultion unit="[°]">1 
	</horizontalResoultion>
	<verticalResoultion unit="[m]">none</verticalResoultion>
	<location>Falkenberg, Germany</location>
	<productDescription>This data set contains rainfall rates estimated
		from X-band radar (WRX) observations during the Field Experiment on
		Sub-mesoscale Spatio-Temporal Variability in Lindenberg (FESSTVaL)
		from June to August 2021. This single-polarized, local area weather
		radar was located at the boundary layer field site of the German
		Weather Service (Deutscher Wetterdienst - DWD) at Falkenberg. The
		radar operated at an elevation angle of 2.3° with a high temporal 30
		s, range 60 m, and sampling 1° resolution refining observations of the
		German nationwide C-band radars within a 20 km scan radius. The
		high-resolution rainfall rates are available as hourly NetCDF-files. 
	</productDescription>
	<limitations>Quality: Several sources of radar-based errors were
		adjusted gradually affecting the precipitation estimate, e.g. the
		radar calibration, alignment, attenuation, noise, non-meteorological
		echoes. However, a few azimuth angles of the measurements are affected
		by beam blockage. The WRX’s reflectivity values are calibrated and the
		derived rainfall rates are evaluated to measurements of a micro rain
		radar (MRR) located at the Lindenberg Meteorological Observatory –
		Richard Assmann Observatory (MOL-RAO) of the German Weather Service (DWD). 
		The rainfall rates of the WRX and MRR are in good agreement.   
		Some days have missing data, see this list of days and percentage available data:
    10.07.2021 = 96 %;
    09.08.2021 = 83 %;
    23.08.2021 = 98 %;
    24.08.2021 = 0 %;
    25.08.2021 = 68 %  
	</limitations>
	<instruments>
		<instrument number="1">
			<source>local area weather radar / X-band weather radar FLK</source>
			<latitude unit="[°]">52.167648</latitude>
			<longitude unit="[°]">14.120446</longitude>
			<altitude unit="[m]">72</altitude>
			<height unit="[m]">none</height>
			<specification>Horizontal resolution: 1° azimuth, 60 m range 
			</specification>
		</instrument>
	</instruments>
	<references>
		<reference number="1">
			<form>paper</form>
			<publicationDate>2014</publicationDate>
			<author>Lengfeld, K., Clemens, M., Münster, H., and Ament, F. 
			</author>
			<title>Performance of high-resolution X-band weather radar networks –
				the PATTERN example</title>
			<abstract>none</abstract>
			<publish>Atmos. Meas. Tech., 7, 4151–4166,
				https://doi.org/10.5194/amt-7-4151-2014,</publish>
		</reference>
		<reference number="2">
		<form>Data set</form>
		<publicationDate>2022</publicationDate>
		<author>Burgemeister, Finn; Clemens, Marco; Ament, Felix;</author>
		<title>
		Rainfall rates estimated from X-Band radar observations during FESSTVaL 2021 (Version 0) </title>
		<abstract>none</abstract>
		<publish>http://doi.org/10.25592/uhhfdm.10090</publish>
		</reference>
	</references>
	<keywordLists>
		<keywordList number="1">
			<experimentType>Short term observations</experimentType>
			<measurementType>Local observations</measurementType>
			<mainGroup>Instrument groups</mainGroup>
			<variableGroup>Radar</variableGroup>
		</keywordList>
	</keywordLists>
	<dimensions>
		<azimuth>360</azimuth>
		<time>120</time>
		<range>333</range>
	</dimensions>
	<variables>
		<vaiable>
			<name>azimuth</name>
			<dimension>azimuth</dimension>
			<standard_name>sensor_azimuth_angle</standard_name>
			<long_name></long_name>
			<units>degrees</units>
		</vaiable>
		<variable>
			<name>time</name>
			<dimension>time</dimension>
			<standard_name>time</standard_name>
			<long_name>time</long_name>
			<units>days since 1970-01-01</units>
		</variable>
		<variable>
			<name>range</name>
			<dimension>range</dimension>
			<standard_name></standard_name>
			<long_name>distance from sensor to center of each range gates along the line of sight</long_name>
			<units>meters</units>
		</variable>
		<variable>
			<name>rr</name>
			<dimension>time, azimuth, range</dimension>
			<standard_name>rainfall_rate</standard_name>
			<long_name></long_name>
			<units>mm/h</units>
		</variable>
		<variable>
			<name>lat</name>
			<dimension>azimuth, range</dimension>
			<standard_name>latitude</standard_name>
			<long_name></long_name>
			<units>degrees_north</units>
		</variable>
		<variable>
			<name>lon</name>
			<dimension>azimuth, range</dimension>
			<standard_name>longitude</standard_name>
			<long_name></long_name>
			<units>degrees_east</units>
		</variable>
		<variable>
			<name>ele</name>
			<dimension></dimension>
			<standard_name></standard_name>
			<long_name>sensor elevation angle</long_name>
			<units>degrees</units>
		</variable>
		<variable>
			<name>azimuth_offset</name>
			<dimension></dimension>
			<standard_name></standard_name>
			<long_name>offset sensor azimuth angle</long_name>
			<units>degrees</units>
		</variable>
		<variable>
			<name>lat_center</name>
			<dimension></dimension>
			<standard_name>latitude</standard_name>
			<long_name>latitude of instrument location</long_name>
			<units>degrees_north</units>
		</variable>
		<variable>
			<name>lon_center</name>
			<dimension></dimension>
			<standard_name>longitude</standard_name>
			<long_name>longitude of instrument location</long_name>
			<units>degrees_east</units>
		</variable>
		<variable>
			<name>zsl_center</name>
			<dimension></dimension>
			<standard_name>altitude</standard_name>
			<long_name>altitude of instrument above mean sea level</long_name>
			<units>meters</units>
		</variable>
		<variable>
			<name>calibration_coefficient</name>
			<dimension></dimension>
			<standard_name></standard_name>
			<long_name>calibration coefficient</long_name>
			<units>1</units>
		</variable>
	</variables>
</metadata>