cops_rsdu_imkrs2_metpro_d: Data of dropsondes (mobile radiosondes) launched by mobile radiosonde-teams

hdl:21.14106/e39515c7c04f1b03e15ba5e12e1719eced5a3dd5

Corsmeier, Ulrich

Dataset
Summary
Dropsondes (mobile radiosondes) were launched by 5 mobile radiosonde teams. The launching sites were different from IOP to IOP. The positions are identical with the positions of the meteorological towers (imkmt1 to imkmt4). There have been no more than 4 teams operational on each IOP.
The dropsondes are radiosonde-like systems. The maximum height is 12050 m above MSL. At this height, the sondes are separated from the balloon and then glide to the ground. Drop points are up to 70 kilometres apart from launching sites.
For detailed information about the sites see supplement file and map.
For detailed information about the sondes see:
Kottmeier, Ch., T. Reetz, P. Ruppert, N. Kalthoff, 2001: A new airological sonde system for dense meteorological soundings, J. Atmos. Oceanic Technol., 18, 1495-1502 (2001)
Project
COPS (Convective and Orographically-induced Precipitation Study)
Location(s)
Northern Black Forest, Germany
Additional Information
uni_hohenheim_data_policy.txt
cops_rsdu_mfrsnr_info_1: pdf-file with listing of radiosondes by MeteoFrance during COPS
cops_rsdu_imk_info_1: pdf-file with details on IMK stations and drop(up)-sondes
Spatial Coverage
Longitude 8.19 to 8.73 Latitude 48.28 to 48.74 Altitude: 250 m relativ to NN to 12050 m relativ to NN
Temporal Coverage
2007-06-14 to 2007-08-13 (calendrical)
Use constraints
For scientific use only. No commercial use allowed. Please be aware of the common COPS/GOP/D-PHASE data policy (http://cops.wdc-climate.de/)
Data Catalog
World Data Center for Climate
Access constraints
Authorized Persons
Size
1.83 MiB (1921180 Byte)
Format
netCDF.tar.gz
Status
completely archived
Creation Date
Download Permission
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Cite as
[ Derived from parent entry - See data hierarchy tab ]
Corsmeier, Ulrich (2011). cops_rsdu_imkrs: meteorological sounding data of dropsondes (mobile radiosondes) launched by mobile radiosonde-teams run by FZK/IMK-TRO during COPS 2007. World Data Center for Climate (WDCC) at DKRZ. https://doi.org/10.1594/WDCC/cops_rsdu_imkrs

BibTeX RIS
Description
The meteorological sensors of the dropsonde are identical in contribution with the SRS 400 sonde (standard PTU unit) and the dewpoint mirror 'Snow White' by Meteolabor is used.
Time intervals:
PTU-Data such as air_temperature, dew_point_temperature and air_pressure (if measured by hypsometer, see below), are measured with respect to variable time stamps (sonde Nr.4 to Nr.33 between 0.8 s and 2.8 s; for sonde Nr.41 to Nr.60 between 0.3 s and 1.1 s for air_temperature and
between 0.6 s and 2.1 s for drew_point_temperature) and linearly interpolated onto constant
1 s time intervals (accord. to GPS time interval of 1 s).
Technical specifications (accord. to manufacturer):
air_pressure:
-sondes Nr.4 to Nr.33:
hypsometer, range: 1100 to 5 hPa, accuracy: 0.2 %, resolution: 0.02 %
-sondes Nr.41 to Nr.60:
pressure is calculated (derived from GPS altitude information)
-for some sondes hypsometer-derived values were not available at times due to instrument failure. Then, pressure data were derived from GPS altitude information beginning from the onset of the malfunction. If so, this is given in the 'description' attribute of variable 'air_pressure' in the data file.
air_temperature:
thermocouple: range: +50 deg C to -100 deg C, accuracy: lt 0.1 deg C, resolution: 0.01 deg C
Please note:
During the ascent of the dropsonde/radiosonde, the temperature sensor is recording slightly too high temperature values. This is due to the heat emission of the dew point mirror and a less good air flow through the sonde's flow channel in case of ascent. The error can reach up to 2 K for high altitudes. This has been corrected based on a comparison ascent together with a GRAW DFM-97 radiosonde (the GRAW DFM-97 was regarded during the WMO Intercomparison of GPS Radiosondes 2001). We are convinced that this error is corrected adequately now.
dew_point_temperature: range: +50 deg C to -100 deg C, accuracy: 0.3 deg C, resolution: 0.01 deg C.
PLEASE SEE 'HORIZONTAL ACCURACY REPORT'
Description
Relative intensity of the ambient light (in the visible) with respect to an empirically derived intensity maximum of full solar radiation. It is measured by a light sensor mounted at the bottom side of the sonde and directed downwards. It is sensitive in the spectral range from 460 to 1080 nm. The data can be used to detect the top of the clouds. Accuracy: no information available.
VariableAggregationUnit
air_pressure
CF
1sechPa
air_temperature
CF
1secdegC
altitude
CF
1secm
dew_point_temperature
CF
1secdegC
latitude
CF
1secdegree_north
longitude
CF
1secdegree_east
relative_intensity_of_ambient_light
1sec0.01
wind_from_direction
CF
1secdegree
wind_speed
CF
1secm s-1
Contact typePersonORCIDOrganization
Originator
Dr. Ulrich Corsmeier
-
Karlsruher Institut für Technologie

Parent

cops_rsdu: contains data from Radio Soundings and Drop Up Sondes during COPS Campaign
Details

Parent project(s)

Convective and Orographically-induced Precipitation Study

[Entry acronym: cops_rsdu_imkrs2_metpro_d] [Entry id: 2183133]