WORLD METEOROLOGICAL ORGANIZATION
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CBS/OPAG-IOS/ICT-IOS8 / Doc. 4.4(2)
(16.02.2016)
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COMMISSION FOR BASIC SYSTEMS
OPEN PROGRAMMME AREA GROUP ON
INTEGRATED OBSERVING SYSTEMS
ITEM: 4.4
IMPLEMENTATION-COORDINATION TEAM
ON INTEGRATED OBSERVING SYSTEM
Original: ENGLISH
(ICT-IOS)
Eighth Session
GENEVA, SWITZERLAND, 7 – 10 APRIL 2014
REVIEW OF THE STATUS OF THE SURFACE-BASED COMPONENTS OF THE GOS
MONITORING RESULTS OF POLAR AND CRYOSPHERE OBSERVATIONS
(Submitted by the Secretariat)
SUMMARY AND PURPOSE OF DOCUMENT
The document provides information on the Monitoring Results of Polar and
Cryosphere Observations.
ACTION PROPOSED
The Meeting is invited to note the information contained in this document
when discussing how it organises its work and formulates its recommendations.
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Appendices: A. Polar Observations received During the World Weather Watch
Quantitative Monitoring
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APPENDIX A
POLAR OBSERVATIONS RECEIVED DURING THE WORLD WEATHER WATCH
QUANTITATIVE MONITORING
1
Four times a year, the World Weather Watch quantitative monitoring records the
number of observations being exchanged on the GTS. For stations in the Regional Basic
Synoptic Networks (RBSN), the number of reports received is compared with the
number of reports that are required from RBSN stations during the period (for a day for
surface synoptic reports, two a day for upper air reports). Monitoring only counts reports
for the main synoptic hours (00Z, 06Z, 12Z and 18Z for surface reports, 00Z and 12Z for
upper air reports). Reports for other times are not counted, so that if a station reports
upper air observations only at 01Z and 13Z it is recorded as not distributing its
observations.
2
Figures 1-4 show the percentages of reports received from stations in the Arctic,
and Figures 5-8 show the percentages of reports received from stations in the Antarctic.
In both cases more reports are received in the summer months than in the winter ones.
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Figure 1. Percentages of reports received from RBSN surface stations within the Arctic
circle during the WWW quantitative monitoring exercise in July 2013.
Figure 2. Percentages of reports received from RBSN surface stations within the Arctic
circle during the WWW quantitative monitoring exercise in January 2014.
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Figure 3. Percentages of reports received from RBSN upper stations within the Arctic
circle during the WWW quantitative monitoring exercise in July 2013.
Figure 4. Percentages of reports received from RBSN surface stations within the Arctic
circle during the WWW quantitative monitoring exercise in January 2014.
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Figure 5. Percentages of reports received from RBSN surface stations within the Antarctic
circle during the WWW quantitative monitoring exercise in July 2013.
Figure 6. Percentages of reports received from RBSN surface stations within the Antarctic
circle during the WWW quantitative monitoring exercise in January 2014.
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Figure 7. Percentages of reports received from RBSN upper air stations within the
Antarctic circle during the WWW quantitative monitoring exercise in July 2013.
Figure 8. Percentages of reports received from RBSN upper air stations within the
Antarctic circle during the WWW quantitative monitoring exercise in January 2014.
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3
Long term time trends in the percentage of observations received at Antarctic
stations during the October Annual Global Monitoring periods are shown in Figures 9
and 10 (time series of Arctic availabilities are not available). The rise in the percentage
of observations reported in 2011 and 2012 has not been sustained.
Percentage of SYNOP reports received during the 2004 to
2013 October AGM/IWM in comparison with the numbers of
reports required from the RBSN stations
Percentage of reports received
100%
80%
60%
O
ct
A p 04
rO 05
ct
A p 05
rO 06
ct
A p 06
r-0
O 7
ct
A p 07
rO 08
ct
A p 08
rO 09
ct
A p 09
r-1
O 0
ct
A p 10
rO 11
ct
A p 11
r-1
O 2
ct
A p 12
rO 13
ct
-1
3
40%
Oct04
Oct05
Oct06
Oct07
Oct08
Oct09
Antarctica 67%
77%
Total
74%
78%
67%
79%
69%
78%
68% 68%
80% 80%
Year
Oct10
Oct11
Oct12
Oct13
81%
77%
83%
92%
82%
62%
82%
Figure 9. Percentage of surface reports received during the October WWW Annual Global
Monitoring exercises. Heavy line: Antarctic. Light line: Global
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Percentage of TEMP reports received during the 2004 to 2013
October AGM/IWM in comparison with the numbers of reports
required from the RBSN stations
Percentage of reports received
100%
80%
60%
40%
Oct-13
Apr-13
Oct-12
Apr-12
Oct-11
Apr-11
Oct-10
Apr-10
Oct-09
Apr-09
Oct-08
Apr-08
Oct-07
Apr-07
Oct-06
Apr-06
Oct-05
Apr-05
Oct-04
20%
Oct-04 Oct-05 Oct-06 Oct-07 Oct-08 Oct-09 Oct-10 Oct-11 Oct-12 Oct-13
Antarctica
Total
61%
67%
54%
70%
63%
71%
50%
71%
61%
52%
72%
71%
Year
72%
53%
75%
56%
71%
53%
73%
Figure 10. Percentage of upper air reports received during the October WWW Annual
Global Monitoring exercises. Heavy line: Antarctic. Light line: Global
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