HD(CP)2 long term observations, cloud liquid water content (height resolved) data of Cloudnet products (no. 00), by Supersite JOYCE, data version 00
Daily files of Cloudnet liquid water content at JOYCE
Access
To get a year dataset please use one of the links below to download the wget script:
2013,
Dataset Author
Patric Seifert, seifert@tropos.de, Institution: Research Center Juelich, Institute for Energy and Climate research (IEK-8)Description
This dataset contains liquid water content calculated by using radar and lidar to identify the liquid cloud base and top in each profile, using the model temperature and pressure to calculate the adiabatic liquid water content in each cloud layer, and then using dual-wavelength microwave radiometers to scale the liquid water content values to yield the correct liquid water path. While this simple partitioning with height is somewhat uncertain, liquid water clouds are frequently thin, occupying only a few vertical model levels, so this dataset is adequate for testing liquid water content in models.
Limitations: none
Provenance: Cloudnet-processed remote-sensing data. See the global argument *cloudnet_source* for more details.
Comments: none
Instrument 1
- Source: Model COSMO-EU
- Descriptive Instrument location: The instruments are part of the JOYCE facility that is installed on the roof of the Institute for Energy and Climate Research, Research Center Juelich.
Instrument 2
- Source: Ceilometer Jenoptick CHM15kx
- Descriptive Instrument location: The instruments are part of the JOYCE facility that is installed on the roof of the Institute for Energy and Climate Research, Research Center Juelich.
Instrument 3
- Source: Metek Mira36s cloud radar
- Descriptive Instrument location: The instruments are part of the JOYCE facility that is installed on the roof of the Institute for Energy and Climate Research, Research Center Juelich.
Instrument 4
- Source: Model COSMO-EU
- Descriptive Instrument location: The instruments are part of the JOYCE facility that is installed on the roof of the Institute for Energy and Climate Research, Research Center Juelich.
Instrument 5
- Source: Microwave radiometer HATPRO
- Descriptive Instrument location: The instruments are part of the JOYCE facility that is installed on the roof of the Institute for Energy and Climate Research, Research Center Juelich.
Instrument 6
- Source: Ceilometer Jenoptick CHM15kx
- Descriptive Instrument location: The instruments are part of the JOYCE facility that is installed on the roof of the Institute for Energy and Climate Research, Research Center Juelich.
Global information
- PID: de.koeln.rrzk/amd.de.sups/joy.cln00.l4.cllw
- Project: HD(CP)2
- Level: 4
- Updated version: 00
- File format: NETCDF3_CLASSIC
- Convention: CF-1.6 where applicable
- Average File Size Uncompressed: 20 Mb
- File name: sups_joy_cln00_l4_cllw_v[VV]_[YYYYMMDDhhmmss].nc
- Start: 2013-01-01
- End: 2013-12-31
Variables
| Name | Dimension | CF standard_name | long_name | Unit |
|---|---|---|---|---|
| cllw | time, height | mass_concentration_of_cloud_liquid_water_in_air | adiabatically scaled liquid water content | kg m-3 |
| cllw_error | time, height | error of mass concentration of cloud liquid water in air | dB | |
| cllw_retrieval_status | time, height | cloud liquid water content retrieval status | 1 | |
| cllw_th | time, height | liquid water content (tophat distribution) | kg m-3 | |
| clwvi | time | atmosphere_cloud_liquid_water_content | liquid water path | kg m-2 |
| clwvi_error | time | error of atmosphere cloud liquid water content | kg m-2 | |
| zsl | altitude | Altitude above mean sea level | m |
Institution
Contact Person(s)
Ulirch Loehnert (loehnert@meteo.uni-koeln.de)
References
Ewan O'Connor,Level 2a Cloudnet product: Liquid water content (linear scaled adiabatic method)