Readme for merged microwave/ceilometer data.

Release 1: Feb. 26, 2002

C. Fairall, chris.fairall@noaa.gov

EPIC2001 RHB Leg II

Oct 5 thru Oct 22, 2001

microceilo_10m.txt data file 2 line headers, 3024 data lines, 14 columns

microceilo_10m_nohd.txt 3024 data lines, 14 columns (no header)

The data in this file come from three sources:

Vaisala CTK-25 ceilometer

DOE/ARM mailbox type 23/31 GHz microwave radiometer

ETL MMCR 21/31/90 GHz microwave radiometer.

Data have been averaged to 10-min and interpolated to a common time base. Variables are:

1	Julian Day (2001), time at the beginning of 10-min ave

2	Cloud fraction (0 to 1)

3	Cloud base height, 16% of cumulative distribution in 10–min

4	Cloud base height, 50% of cumulative distribution in 10–min (median)

5	Cloud base height, 84% of cumulative distribution in 10–min

6	Mailbox column water vapor (cm)

7	Mailbox column water liquid (mm)

8	Mailbox 23 Ghz brightness temperature (K)

9	Mailbox 31 Ghz brightness temperature (K)

10	MMCR column water vapor (cm)

11	MMCR column water liquid (mm)

12	MMCR 21 Ghz brightness temperature (K)

13	MMCR 31 Ghz brightness temperature (K)

14	MMCR 90 Ghz brightness temperature (K)