R/V XIANGYANGHONG #5 - RADIATION DATA

S. Pu (State Oceanographic Administration, PRC)

Announced availability: 1 May 1995

Data Access

R/V Xiangyanghong #5 radiation data are archived and distributed by the Pennsylvania State University Department of Meteorology Field Project Data Archive (http://wwwarc.essc.psu.edu).

After June 1996, data will be available upon request from NOAA's National Climatic Data Center (NCDC) in Asheville, NC (http://www.ncdc.noaa.gov) and from the National Center for Atmospheric Research (NCAR) in Boulder, CO (http://dss.ucar.edu/pub/toga_coare/).

Background

During the TOGA COARE Intensive Observing Period (IOP), the PRC R/V Xiangyanghong #5 was stationed at 2 05'S,154 30'E for the following three legs:
    Leg 1: 3 November 92 - 3 December 92 (Kavieng - Honiara)
    Leg 2: 13 December 92 - 12 January 93 (Honiara - Honiara)
    Leg 3: 22 January 93 - 23 February 93 (Honiara - Guam)

The Xiangyanghong #5 primarily supported TOGA radar operations in addition to CTD, ADCP and sounding measurements.

Data File Information

Number of data files: 1 (xyh5r.dat)
Number of documentation files: 1 (xiang_rad.readme)
Number of additional files: 1 (tt.for - fortran program)
Data format: ASCII
Data volume: 33 KB (compressed)

File Header 

Column 		 Parameter 				Unit
1 (92111000.0) 	 YYMMDDHH.M (a minute digit of 0.3
		 indicates measurements at half
 		 an hour intervals.
2		 Total radiation (0.3-3.0 um) 		W/m2
3 		 Total radiation (0.4-3.0 um) 		W/m2
4 		 Total radiation (0.7-3.0 um) 		W/m2
5 		 Air long wave radiation (downwelling)
6 		 Sea long wave radiation (downwelling)
7 		 Net radiation for reference
Data Example 
92111000.0	0.	0.	0.	413.	469	-434.
       1.0	0.      0.      0.      431.    469     -434.
       2.0	0.      0.      0.      421.    467     -434.
       3.0	0.      0.      0.      426.    464     -434.
	:	0.      0.      0.        : 	 :	  :
	:	0.      0.      0.        :    	 :	  :
For more information, please contact:

Pu Shuzhen
First Institute of Oceanography, State Oceanographic Administration
13 Hongdao Road
Qingdao, Shandong 266003
People's Republic of China

Phone: (81) 532-286-6810
FAX: (81) 532-287-9562

Appendix

Instrumentation

A. Radiometers
(a) EPLAB longwave (IR) radiometer (Eppley Laboratory, Inc.)
(b) TBQ-2 total radiometer (Jinzhou 322 Research Institute, Jinzhou City Liaoning, PRC)

    - Sensitivity: 6-11.5 mV/kWm-2
    - Response time: 3.5 sec (1/e)
    - Resistance: 80 ohm
    - Temperature characteristic: 0.05/c (environmental temperature range: -50 to +50 deg C)
    - Accuracy: 2%
    - Cosine: +3% (0-70 zenith angle); +7% (70-80 zenith angle)
    - Spectrum: 0.3-3.2 um
    - Working radiant intensity region: 0-2.866 kW/m2
    - Working environment: -50 to +50 deg C
    - Relative humidity: 90%
(c) DYF5 net radiometer (Chang Chun Meteorological Instruments Factory, Chang Chun City, Ji Lin, PRC)
    - Sensitivity: 7-13 V/Wm-2
    - Delay time: > 30 sec (95%)
    - Resistance: < 80 ohm
    - Wavelength range: 0.3-30 um
    - Accuracy: +5%

B. Radiation Recorder
(a) RJT-2 radiation recorder (including a PC-1500 computer) (Jinzhou 322 Research Institute, Jinzhou City, Liaoning, PRC)

    - Measurement range: 0-20 mV
    - Channel: 5
    - Accuracy: +0.5% (+7 W/m2)
    - Resolution: instantaneous 1 W/m2
    - Accumulation: 0.01 mJ/m2
(b) EPR-221a curve recorder (East Asian Electric Wave CO., LTD., Japan)

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