Notes

Slide Show

Outline

1	Recent results from the Cabauw Experimental Site for Atmospheric Research
2	Collaboration between institutions
3	Contributions by
4	Cabauw Site
5	CESAR: A national observatory Observations (remote sensing and in situ)
6	Motivation
7	The importance of Cabauw within Netherlands / Europe A) Cabauw is within the centre of the Netherlands, therefore it is representative of the Netherlands.
8	View from the top of the mast
9	Remote sensing site
10	Cabauw water level /soil measurement system
11	"The 6 channel sun photometer..." The 6 channel sun photometer SPUV These channels are 2-15 nm wide.
12	Observations: Radiation (pre-BSRN)
13	Observations: Land-Atmosphere interactions : Cabauw potential temperature difference between 200 m and 2 m
14	Observations: Cloud radar data
15	Observations: Light rain with lidar and radar
16	Observations: Calibration of sun photometer
17	Observations: Calibration of sun photometer at JungfrauJoch, autumn 2003
18	Observations: Calibration results ln I_o in De Bilt at 501 nm
19	Observations: Surface and TOA irradiances
20	Applications: 1) Parameter retrieval 2) Sensor synergy 3) Climate Model Validation 4) Process Studies
21	Applications: Parameter Retrieval; Aerosol optical depth; Histogram of t_aer(501 nm) mean: 0.22 ± 0.16; median 0.18 min.: 0.03, max.: 1.13
22	Applications: Parameter retrieval: Aerosol optical thickness
23	Applications: Sensor Synergy: Detection of clouds, Radar vs. Ceilometer
24	Applications: Sensor Synergy; Target Classification
25
26	Applications: Sensor Synergy; The retrieval of cloud microparameters
27	Applications: Sensor synergy: Case study: August 28, 2001, Cabauw, Retrieval Results (classification using radar and lidar data)
28	Applications: Sensor Synergy; Calculating ice cloud microphysics using Lidar and Radar
29	Applications: Climate Model Validation
30	Applications: Model validation; Observed and model predicted LWP distributions
31	Applications: Model evaluation; Evaluation of Liquid Water Content vertical profile
32	Applications: Model evaluation; Clouds and Solar Radiation
33	Applications: Satellite validation / Model Validation
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35	Example of case study with AVHRR and RACMO LWP fields
36	Applications: Comparing model, satellite and ground-based observations of LWP
37	Applications: Process studies
38	Applications: Process studies: The effect of aerosols on I¯
39	Applications: Comparing microphysical ice cloud properties between stations
40	Applications: Process Studies; Relating particle size to cloud depth
41	Applications: Comparing ice water content to literature relationships
42	The Baltex Bridge Cloud (BBC) campaign August 1- September 30, 2001, Cabauw, NL Aircrafts the Meteo France Merlin aircraft the Partenavia P68B aircraft from the Institute for Tropospheric Research, Leipzig the Cessna C207T aircraft from the Free University of Berlin.
43	BBC2 main topics Radiative transport in inhomogeneous cloud fields Improvement of cloud representation in models Focus on boundary layer clouds Improvement measurement techniques Synergy: Lidars, radars, microwave radiometers, .. Satellite retrievals (MSG, AVHRR, SCIAMACHY) Aerosol - radiation interaction
44
45	Building-up
46	BBC -impressions
47	Backtrajectories originating at an altitude of 500 m at Cabauw, and droplet concentrations for seven days of the Merlin flights in September 2001,
48	Droplet concentration from passive imager
49	Near Future Observations: expansion
50	The future in European context
51	Data Availability (present status)
52	Related web sites (present status)