Add a new entry to C-2 for radiosonde of China

[Annie-FangZHAO]

Branch

https://github.com/wmo-im/CCT/tree/issue64

Summary and purpose

This document proposes a new entry to Common Code Table C-2 to identify new radiosonde of China.

Action proposed

The meeting is kindly invited to review the proposed new entry and approve it for pre-operational use and inclusion within the next update to the WMO Manual on Codes.

Discussions

Duing FT2020-2 period, three new entries have been added to Common Code Table C-2 to identify 3 new radiosondes GTS11, GTS12 and GTS13 of China.

Recently, a new radiosonde has been produced by Shanghai Changwang Weather Technology Co., Ltd. which has the same technical features as GTS12 of this company, however, the pressure sensor has been changed from the NPP-301-100A type silicon piezoresistance by the GE company to the 24PC type silicon piezoresistance by the Honeywell company. The new radiosonde is named as GTS14, and would be parallel operational used in upper-air observation system of CMA with GTS12.

In order to encode radiosonde type (0 02 011) in BUFR message of TEMP and PILOT report, we’d like to request a new entry to C-2 to identify GTS14.

Detailed proposal

Add a new entriy to Common Code Table C-2:

date of assignment of number	code figure for rara	code figure for BUFR(code table 0 02 011)	Radiosonde type
??/5/2022	Not available	203	Shanghai GTS14 (China )

The brief introduction of GTS14 is as follows:
(1)The temperature sensor is coated with a rod-shaped thermistor with white paint and changed to a bead-shaped thermistor vacuum-sprayed aluminum radiation-proof coating.
(2)The humidity sensor is the HC103M2 type capacitance by the E + E company.
(3)The pressure sensor is the 24PC type silicon piezoresistance by the Honeywell company.
(4)It operates at 1675MHz and compatible with GFE(L) secondary wind-finding radar.
The repeatability of each radiosonde sensor: temperature ≤ 0.2K; humidity ≤ 6%; air pressure ≤ 1hPa (altitude below 100hPa).

[jitsukoh]

@Annie-FangZHAO can you update the branch?

[Annie-FangZHAO]

@jitsukoh @amilan17
The branch is updated. Thank you.

[jitsukoh]

@Annie-FangZHAO thank you for updating!
@amilan17 I confirm that the branch is updated, except for the effective date, and I moved to this issue to the validated status.