f. madonna, a. giunta, a. amodeo, g. d’amico, and g. pappalardo
DESCRIPTION
Temperature, water vapour and cloud liquid water measurements at Hornisgrinde using a microwave profiler. F. Madonna, A. Giunta, A. Amodeo, G. D’Amico, and G. Pappalardo Consiglio Nazionale delle Ricerche Istituto di Metodologie per l’Analisi Ambientale CNR-IMAA [email protected]. - PowerPoint PPT PresentationTRANSCRIPT
Temperature, water vapour and cloud liquid water measurements at
Hornisgrinde using a microwave profiler
F. Madonna, A. Giunta, A. Amodeo, G. D’Amico, and G. Pappalardo
Consiglio Nazionale delle RicercheIstituto di Metodologie per l’Analisi Ambientale
CNR-IMAA
CNR-IMAA - MP3014 Microwave ProfilerThe microwave profiler measures the sky brightness temperature at 12 frequencies:5 frequencies are in the K-band (22.235, 23.0335, 23.835, 26.235, 30 GHz), around 22 GHz water vapour resonance band;7 frequencies are in the V-band (51.250, 52.280, 53.850, 54.940, 56.660, 57.290, 58.800 GHz), around 60 GHz oxygen spyn-rotation band.
Rate: > 12 sAccuracy: 0.5 KResolution: 0.25 KRange: 0 -700 KOperational range: -20° - 50° CScanning capabilities: 3D sky Beam width: 6.3° at 22.2 GHz, 4.9° at 30 GHz, 2.5° at 51.3 GHz and 2.4° at 58.8 GHz (full width half power)
Output products: Neural network (Solheim et al., 1998)Temperature, water vapour, relative humidity and cloud liquid water profiles up to 10 km above the groundIPWV, ILW accuracy: >0.09 kg/m2, >4 g/m2.
Profiles are output in 100 m from 0 to 1 km, 250 m above up to 10 km
Ancillary parameters.Cloud base temperature measured using an infrared radiometer.Surface meterological parameters (p, T, RH)
The microwave profiler measures the sky brightness temperature at 12 frequencies:5 frequencies are in the K-band (22.235, 23.0335, 23.835, 26.235, 30 GHz), around 22 GHz water vapour resonance band;7 frequencies are in the V-band (51.250, 52.280, 53.850, 54.940, 56.660, 57.290, 58.800 GHz), around 60 GHz oxygen spyn-rotation band.
Rate: > 12 sAccuracy: 0.5 KResolution: 0.25 KRange: 0 -700 KOperational range: -20° - 50° CScanning capabilities: 3D sky Beam width: 6.3° at 22.2 GHz, 4.9° at 30 GHz, 2.5° at 51.3 GHz and 2.4° at 58.8 GHz (full width half power)
Output products: Neural network (Solheim et al., 1998)Temperature, water vapour, relative humidity and cloud liquid water profiles up to 10 km above the groundIPWV, ILW accuracy: >0.09 kg/m2, >4 g/m2.
Profiles are output in 100 m from 0 to 1 km, 250 m above up to 10 km
Ancillary parameters.Cloud base temperature measured using an infrared radiometer.Surface meterological parameters (p, T, RH)
CNR-IMAA MP3014measurement report
Date (dd/mm/yy) Operation mode Operation time Date (dd/mm/yy) Operation mode Operation time Date (dd/mm/yy) Operation mode Operation time01/06/2007 zenith mode 0000 - 0120 UT 01/07/2007 ScaS1 0000 - 2400 UT 01/08/2007 ScaS1 0000 - 2400 UT02/06/2007 mainteinance 02/07/2007 ScaS1 0000 - 2400 UT 02/08/2007 ScaS1 0000 - 2400 UT03/06/2007 mainteinance 03/07/2007 ScaS1 0000 - 2400 UT 03/08/2007 ScaS1 0000 - 2400 UT04/06/2007 mainteinance 04/07/2007 ScaS1 0000 - 2400 UT 04/08/2007 ScaS1 0000 - 2400 UT05/06/2007 mainteinance 05/07/2007 ScaS1 0000 - 2400 UT 05/08/2007 ScaS1 0000 - 2400 UT06/06/2007 mainteinance 06/07/2007 ScaS1 0000 - 2400 UT 06/08/2007 ScaS1 0000 - 2400 UT07/06/2007 elevation mode 1300 - 2400 UT 07/07/2007 ScaS1 0000 - 2400 UT 07/08/2007 ScaS1 0000 - 2400 UT08/06/2007 elevation mode 0000 - 1650 UT 08/07/2007 ScaS1 0000 - 2400 UT 08/08/2007 ScaS2 0000 - 2400 UT09/06/2007 down 09/07/2007 ScaS1 0000 - 2400 UT 09/08/2007 ScaS2 0000 - 2400 UT10/06/2007 down 10/07/2007 ScaS1 0000 - 2400 UT 10/08/2007 ScaS1 0000 - 2400 UT11/06/2007 down 11/07/2007 ScaS1 0000 - 2400 UT 11/08/2007 ScaS1 0000 - 2400 UT12/06/2007 elevation mode 1600 - 2400 UT 12/07/2007 ScaS1 0000 - 2400 UT 12/08/2007 ScaS1 0000 - 2400 UT13/06/2007 elevation mode 0000 - 2400 UT 13/07/2007 ScaS1 0000 - 2400 UT 13/08/2007 ScaS1 0000 - 2400 UT14/06/2007 elevation mode 0000 - 2400 UT 14/07/2007 ScaS1 0000 - 2400 UT 14/08/2007 ScaS1 0000 - 2400 UT15/06/2007 elevation mode 0000 - 2400 UT 15/07/2007 ScaS1 0000 - 2400 UT 15/08/2007 ScaS2 0000 - 2400 UT16/06/2007 elevation mode 0000 - 2400 UT 16/07/2007 ScaS1 0000 - 2400 UT 16/08/2007 ScaS2 0000 - 2400 UT17/06/2007 elevation mode 0000 - 2400 UT 17/07/2007 ScaS1 0000 - 2400 UT 17/08/2007 ScaS1 0000 - 2400 UT18/06/2007 elevation mode 0000 - 2400 UT 18/07/2007 ScaS1 0000 - 2400 UT 18/08/2007 ScaS1 0000 - 2400 UT19/06/2007 ScaS1 0000 - 2400 UT 19/07/2007 ScaS1 0000 - 2400 UT 19/08/2007 ScaS1 0000 - 2400 UT20/06/2007 elevation mode 0000 - 2400 UT 20/07/2007 ScaS2 0000 - 2400 UT 20/08/2007 ScaS1 0000 - 2400 UT21/06/2007 elevation mode 0000 - 2400 UT 21/07/2007 ScaS2 0000 - 2400 UT 21/08/2007 ScaS1 0000 - 2400 UT22/06/2007 elevation mode 0000 - 2400 UT 22/07/2007 ScaS1 0000 - 2400 UT 22/08/2007 ScaS1 0000 - 2400 UT23/06/2007 elevation mode 0000 - 2400 UT 23/07/2007 ScaS2 0000 - 2400 UT 23/08/2007 ScaS1 0000 - 2400 UT24/06/2007 elevation mode 0000 - 2400 UT 24/07/2007 ScaS1 0000 - 2400 UT 24/08/2007 ScaS3 0000 - 2400 UT25/06/2007 elevation mode 0000 - 2400 UT 25/07/2007 ScaS1 0000 - 2400 UT 25/08/2007 ScaS3 0000 - 2400 UT26/06/2007 elevation mode 0000 - 2400 UT 26/07/2007 ScaS3 0000 - 2400 UT 26/08/2007 ScaS3 0000 - 2400 UT27/06/2007 elevation mode 0000 - 2400 UT 27/07/2007 ScaS1 0000 - 2400 UT 27/08/2007 ScaS1 0000 - 2400 UT28/06/2007 elevation mode 0000 - 2400 UT 28/07/2007 ScaS1 0000 - 2400 UT 28/08/2007 ScaS1 0000 - 2400 UT29/06/2007 elevation mode 0000 - 2400 UT 29/07/2007 ScaS1 0000 - 2400 UT 29/08/2007 ScaS1 0000 - 2400 UT30/06/2007 elevation mode 0000 - 2030 UT 30/07/2007 ScaS1 0000 - 2400 UT 30/08/2007 ScaS1 0000 - 2400 UT
ScaS1 2030 - 2400 UT 31/07/2007 ScaS1 0000 - 2400 UT 31/08/2007 ScaS1 0000 - 2400 UT
DatabaseA preliminary investigation of the collected database has allowed to identify some interesting case studies related to the different convective scenarios occurred during the campaign. The following IOPs have been selected as possible case studies:
• IOP-4 (ab) High-pressure/Forced convection• IOP-8 (ab) High-pressure convection• IOP-11 (ab) High-pressure convection• IOP-12 Formation of cumulus clouds• IOP-13 (ab) High-pressure/Forced convection• IOP-14 (a) Formation of cumulus clouds• IOP-16 Forced convection• IOP-17 (ab) Weakly forced convection• IOP-18 (ab) High-pressure convection
Temperature – 20 June 2007
225 250 275 300 3250
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Hei
ght (
m .a
.s.l)
Temperature (K)
MP3014 RS05:52
225 250 275 300 3250
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7000
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ght (
m .a
.s.l)
Temperature (K)
MP3014 RS05:52
225 250 275 300 3250
1000
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7000
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Hei
ght (
m .a
.s.l)
Temperature (K)
MP3014 RS07:52
225 250 275 300 3250
1000
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ght (
m .a
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Temperature (K)
MP3014 RS07:52
225 250 275 300 3250
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Hei
ght (
m .a
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Temperature (K)
MP3014 RS11:12
225 250 275 300 3250
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ght (
m .a
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Temperature (K)
MP3014 RS11:12
225 250 275 300 3250
1000
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7000
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Hei
ght (
m .a
.s.l)
Temperature (K)
MP3014 RS16:57
225 250 275 300 3250
1000
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7000
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Hei
ght (
m .a
.s.l)
Temperature (K)
MP3014 RS16:57
Temperature – 24 August 2007
250 275 3000
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He
igh
t (m
.a.s
.l)
Temperature (K)
MP3014 RS 05:32
250 275 3000
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6000
He
igh
t (m
.a.s
.l)Temperature (K)
MP3014 RS 07:56
250 275 3000
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He
igh
t (m
.a.s
.l)
Temperature (K)
MP3014 RS 10:58
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He
igh
t (m
.a.s
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Temperature (K)
MP3014 RS 13:56
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t (m
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.l)
Temperature (K)
MP3014 RS 17:01
Relative Humidity (15 July 2007)
Met Office NAE (North Atlantic and European) model
MP3014 CNR-IMAA microwave profiler
Relative Humidity (20 July 2007)
MP3014 CNR-IMAA microwave profiler
Met Office NAE (North Atlantic and European) model
Relative Humidity (01 August 2007)
Met Office NAE (North Atlantic and European) model
MP3014 CNR-IMAA microwave profiler
LWP – scanning measurements
Measurement at Hornisgrinde:
- Clear 23%
- Cloudy (Tir > 250 K) 77%
a. Low-Cloud ceiling (Tir > 280 K) 80%
b. Rain (rain sensor) 8%
Need for accurate estimation of the LWP
Use of intensive scanning data (low off-zenith) to improve the LWP retrieval
Investigation of Time Structure Functions
Outlook• The cross-comparison with the other profilers operational at
Hornisgrinde is planned and preliminary comparisons with the lidars are already ongoing. The contemporaneous presence of lidars for measurements of temperature and water vapour and of a microwave profiler provides the opportunity to evaluate the possible synergies between these profiling techniques and to elaborate new algorithms for the measurement integration.
• Preliminary comparisons between the UHOH DIAL and the microwave profiler are already ongoing (see posters).
• In this preliminary investigation, a neural network retrieval has been used for the retrieval of the profiles and integrated variables (Solheim et al., 1998). A processing of the data collected by all the microwave profiler involved in the campaign using a single retrieval algorithm (Löhnert and Crewell, 2003), coordinated by University of Cologne, is planned. This will give a strong contribution to the harmonization of the database and to the managing of the data by the modellers and other end-users.
Measurement strategy• ScaS1 (all vertical)
Zenith pointing only Δt = 13 s• ScaS2 (supersite cross-section )
Zenith (30’) and elevation (30’) Δt = 14 sElevation obs. Cycle 5 min (180° - 0° from R to M)Angle step = 9°
• ScaS3 (along-wind cross-section)Elevation scanning only Δt = 14 sObs. Cycle 5 min (180° - 0° from R to M)Angle step = 9°
• ScaS4 (Aircraft scenario)