1. Introduction

The BBC is a cloud observation campaign that will take place in August and September 2001 in The Netherlands in the framework of CLIWA-NET and the 4D-WOLKEN project. Most of the ground-based observations will be taken at the central site of Cabauw, and include radars, lidars, microwave radiometers, radiation measurements and meteorological observations (such as temperature, wind, etc.). First, along with the other observations, 8 microwave radiometers will be intercompared at Cabauw for a period of 2 weeks. Next, they will be placed in a regional network in and around Cabauw (100 x 100 km2), along with ceilometers, radiation measurements and meteorological measurements. During the operation of the regional network, 3 aircraft will take measurements over the area. These will consist of in situ cloud particle measurements and radiation measurements. More details on the BBC campaign can be found in the CLIWA-NET observational plan and will, as the preparations continue, appear on this web page.

2. Planning meetings

• BBC Aircraft Planning Meeting, KNMI, De Bilt, The Netherlands, 12 January 2001
  • Minutes (PDF)
  • Presentation A. van Lammeren, KNMI (PDF)
  • Presentation S. Crewell, MIUB (PDF)
  • Presentation M. Wendisch, IfT, Leipzig (PDF)
  • Presentation M. Schröder, FUBerlin (PDF)
• BBC Planning Meeting, KNMI, De Bilt/Cabauw, The Netherlands, 1 + 2 March 2001
  • Draft agenda (PDF), 22/02/01

3. Local information

• Map. Large map (JPG, 600k) of the area around Cabauw. De Bilt is in the upper right-hand corner.
• Accommodation and tourist information. Links to websites for hotels, B&B's, campgrounds etc. The BBC campaign takes place in the summer holidays, so make your reservations early!
• Route planner. Find your own way around in The Netherlands.
• Public transport. Websites for Dutch and European public tranport.

4. BBC Organisation

• BBC management plan (PDF), March 2001.
• The latest aircraft coordination plan (PDF).
• Instruments:
  • All instruments of the BBC (PDF). Again, undecided issues are printed in red.
  • Microwave radiometer requirements (PDF).
• Cabauw:
  • The new layout (PDF) of the remote sensing site at Cabauw! 3-D images of the layout can be found here (with special thanks to Joris van Lammeren).
  • Click here for the measurements at the meteorological tower for the last 4 days.
  • A list of people to contact for support in Cabauw.
• A schedule of the BBC science meetings during the campaign (PDF).
• 1st meeting BBC Local Organising Committee (BBC-LOC), 26/01/01: minutes.

5. Data

• 27/11/2001. Data are still coming in in the database. All data are therefor preliminary! The description of the dataformat can be found here.
• 20/06/2005. The BBC data are accessible by anonymous ftp at bbc.knmi.nl. Note that you have access to the BBC2-campaign data as well. Read the data-policy of BBC2 before using the BBC2 data (click here).