QUALITY MANAGEMENT IN SURFACE CLIMATE QUALITY MANAGEMENT IN SURFACE, - - PowerPoint PPT Presentation
QUALITY MANAGEMENT IN SURFACE CLIMATE QUALITY MANAGEMENT IN SURFACE, CLIMATE AND UPPER AIR OBSERVATIONS IN CHINA IN CHINA Zhang Hongzheng, Meng Zhaolin a g o g e g, e g ao National Meteorological Information Centre(NMIC) Meteorological
Zhang Hongzheng, Meng Zhaolin a g
e g, e g ao National Meteorological Information Centre(NMIC) Meteorological Observation Centre(MOC) CMA July, 2010
China Meteorological China Meteorological Ad i i i Administration (CMA) Administration (CMA)
Headquarter of CMA Institutions under CMA
General Office
8 Departments
Emergency National M t National Satellite National Cli t
National Meteor.
Meteorologi cal
National Meteor.
Emergency Response, Public Services, Forecasting, Information, Observations Meteor. Centre (NMC) Meteor. Centre (NSMC) Climate Centre (NCC)
Information Center (NMIC)
Observation Centre (MOC) Other 7 institutions
Information Centre (NMIC)
Observations Telecommu nication Division High‐ Performance Computer Division
Climate Data Center (CDC)
Network Division Application Service Division
…… Climate Data Center (CDC)
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( )
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Number of China’s surface stations
RBSN RBCN GSN Manned stations AWS Number 219 82 33 / 220 2010‐8‐3 5
Distribution of China’s surface stations
Number of China’s upper-air sounding stations
RBSN RBCN GUAN Manned stations Automated system stations Number 82 43 7 / 83 2010‐8‐3 6
Distribution of China’s upper-air sounding stations
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Manual to AWS – Manual to AWS – the weather phenomena, clouds amounts/types/height, visibility
– Type 49 to type 59‐701 – Type 59‐701 to L band electronic radiosonde and windfinding radar yp g – By April 2010, almost all up‐air stations have been replaced by L band sounding system
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250 100 150 200 250 ion number
T_ave T_max T_min
Difference between
50
0.2 0.4 0.6 0.8 1 Difference（℃） Stati
Difference between manual and AWS (annual mean/max/min temperature)
Difference（℃）
p )
95%
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Parameter checking
Status and parameter display
Failure parts analyzing Status in time series
– Guide the maintenance technicians to find failure
6000
in time – Offer evidences to
4000
数 数 ( 次 )
hardware and software updating for decision‐ k
2000
数 错 误
平平( 1681. 8)
makers. – Evaluate data quality.
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FMAX U UMIN T TD D10 TMIN D0 D0MAX D160 D320 D80 D0MIN D40 D20 D15 D05 TMAX E R F02
要要要
Discontinuous Conflicting Data g Invariable Data Inconstant varying Invariable Data Inconstant varying
number. number.
management includes management includes – Log on duty – Repair record – Validity of calibration – Logistics Station environment – Station environment pictures and cameras
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ID code Description “Right” : the data does not exceed a given limit. 1 “Doubtful”: not credible. 2 “Wrong”: erroneous data that exceeds a given limit. 3 “Inconsistent”: one or more parameters are inconsistent; the relationship between different elements does not meet the required standards. q 4 “Checked”: Raw data that are identified as doubtful, wrong or inconsistent and that are reconfirmed as right using other verification procedures. 8 “Missing”: Data are missing. 9 “Not checked”: the variable has not been checked for quality control purpose 2010‐8‐3 18 9 Not checked : the variable has not been checked for quality control purpose. N No sensors. No data.
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Through the aforementioned real time quality control statistics is taken for quality
Through the aforementioned real-time quality control, statistics is taken for quality check results of international exchange stations from Jan. to Jun. 2010, with erroneous data accounting for 0.01% of the total data. The percentage of various types of errors is
Error type Percentage
shown in the table.
Error type Percentage Equipment failure 44.44% Operation failure 37.04% Unexplained 18.52%
Error type and percentage of quality control of real-time data
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– mainly checking the starting line, end line, correctness of the bulletin length
– checking the bulletin header format, the correctness of time group
– checking the bulletin formats of various kinds of data according to the WMO Manual on Codes (WMO‐No.306). d FM12 i FM35 d hl FM71 – ground report FM12, upper‐air report FM35, ground monthly report FM71, upper‐air monthly report FM75
After format checking, the correct data will be sorted and coded, and sent to
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GTS.
QC Flag
0：Data correct 1：Data suspicious 2：Data error 3：Data with corrected value 4：Data has been corrected k d
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8：Lack Measured Data 9：Data without quality control
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– basic meteorological knowledge – station network maintenance – observation and detection technology – quality control technology
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– WMO recommends : climate data taking 30 years as the standard – China’s 30‐year meteorological data have been collated and compiled China s 30 year meteorological data have been collated and compiled for three times
– the fourth 30‐year meteorological data are being prepared
Shenyang
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Observation time changed in April 1954
surface temperature upper-air temperature
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l f l l d
– Education – scientific research
Chi d f S i U i i
– Government – Agriculture – Forestry
Chinese academy of Sciences University Army Forestry Geology Ministry of Industry and Information Ministry of Water Source China Aerospace Corporation Medicine Government
– water conservancy – Military – Pharmacy
16.35 2 88 9.62 0.96 13.46 Agriculture Others
– Ocean – Railway – public security
29.81 9.62 6.73 2.88 2.88 1.92 2.88
p y – Media – environment protection
2.88
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