AMOSSG/4-SN No. 6

Appendix

APPENDIX

LIST OF TASKS FOR FUTURE WORK OF THE AERODROME METEOROLOGICAL OBSERVING SYSTEMS STUDY GROUP (AMOSSG)

The AMOSSG is envisaged to assist the Secretariat in pursuing the specific tasks as follows:

task No.	task	reference	estimated date for completion	responsibility

(lead in bold)	note on progress
1.	Consider the need for harmonizing the criteria for issuance of SPECI and those for including change groups in TAF	MET Div Rec 2/3	Amendment 74	AMOSSG, Secretary	To be discussed at AMOSSG/4
2.	Study the expansion of the use of fully automated observations during operational hours	MET Div Rec 2/3	Amendment 74	AMOSSG, Secretary	To be discussed at AMOSSG/4
3.	Update the forecast accuracy requirements and amend Attachment E to Annex 3 if necessary	ANC 136-18	Amendment 74	AMOSSG, Secretary	To be discussed at AMOSSG/4
4.	Study the operational feasibility and desirability of requiring a greater accuracy in the first 3 hours of a TAF, possibly by limiting the use of PROB	ANC 137-16	Amendment 74	AMOSSG, Secretary	To be discussed at AMOSSG/4
5.	Monitor the use of modern observing techniques (e.g. remote sensing)

AMOSSG/1 – SoD,

4.4.1 a);

4.4.3	Ongoing	Michel	a proposal, as necessary, expected for AMOSSG/4
6.	Revise the weather phenomena to be reported under "present weather" and "recent weather"	AMOSSG/1 – SoD,

5.3.1 c)	end 2003	Earle, Benoit, Kevin, Pete, Will	initial proposal presented at the AMOSSG/2; to be re-addressed at AMOSSG/4
7.	Monitor results from research on the automatic detection of cloud types	AMOSSG/1 – SoD,

5.3.1 e)	Ongoing	AMOSSG
8.	Finalize the assessment of the capability of AWS to meet the expected future requirements

AMOSSG/1 – SoD,

6.2.2 b)	Ongoing	AMOSSG	assessments carried out at the AMOSSG/1, AMOSSG/2 and

AMOSSG/3
9.	Revise the definition of "VC"

AMOSSG/1 – SoD,

5.3.1 d)	Amendment 74	AMOSSG, Secretary	Further consideration at AMOSSG/4 following MET Div Rec 2/3
10.	Prepare guidance material	AMOSSG/1 – SoD,

5.3.1 e)

MET Div Rec 2/2	Initial draft by AMOSSG/4 Meeting

2004	AMOSSG,

consultant	draft outline presented at the AMOSSG/2; to be discussed at AMOSSG/4
11.	Monitor States' progress in forecasting RVR	COM/MET/82
, MET/AOP PT Eur Region	Ongoing	AMOSSG	Depends upon input from States and MET/AOP PT
12.	Update the attainable accuracy of observation and measurement in Annex 3, Attachment B	ANC 153-9	Amendment 74	WMO, AMOSSG, Secretary	A proposal from WMO for AMOSSG/5
13.	Enable the use of the BUFR code form for the dissemination of METAR/SPECI and TAF	MET Div 2/5	Initial phase Amendment 74, completion Amendment 76	WMO, AMOSSG, Secretary	WMO plan, enabling clause for AMOSSG/5

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