Introduction of new WDCGG website. Seiji MIYAUCHI Meteorological Agency

Transcription

1 Introduction of new WDCGG website Seiji MIYAUCHI Meteorological Agency

2 1. Introduction of new WDCGG website 2. Starting to gather and provide satellite data at WDCGG

3 Current WDCGG website 3 Searchable Station Directory & Metadata Online Data Search & Plot Downloadable Data & Publications

4 Current metadata edit form 1 1 Click 20 26

5 Why reform? GGMT-2013 GGMT-2015 Financial pressure to GHG measurements Model and Assimilation Cyber Infrastructure Stabilize the WDCGG services Our ultimate goal To serve better to users and contributors alike

6 Concept of the new WDCGG system Data Contributors GAWSIS Full data throughout the operation Web Form Metadata Station information Permanent Archive with Version Management Submitted Data (Original Submitted Data) Data (Original Submitted Data) Data (Original Data) Latest version Primary Data Processing one-to-one correspondence between a data file and the meta data Permanent Archive with Version Management Full data throughout Full the data operation throughout Full (primary) the data operation throughout (primary) the operation (primary) Secondary Data Processing one-to-one correspondence between a data file and the meta data Addition of the header lines Database of Metadata based on the Providers inputs Permanent Archive with Version Management Download Statistics WDCGG internal operation Eternal Preservation and Generation (or Version) Full Management data throughout Full the data operation throughout (WDCGG Full the data operation format) throughout (WDCGG the operation format) (WDCGG format) Metadata Database Matadata (one-to-one correspondence between the obs. data and the meta data) WDCGG Website Data policy and download notice Download netcdf and new WDCGG format (text) Download Data Users Registration Download

7 Contributor s benefit For Data Contributors Contributor s Page Access Log and Statistics Submission from Website Edit Metadata Upload Data files Interface design for data and metadata submission

8 User s benefit For Data Users My Page Data & Metadata Data Download Registration Data Discovery Ex) RYO JMA CO2 insitu Data Gallery Improved visibility of the characteristics of data

9 User s benefit Click This is subject to a major change. Improved Discovery Access and Retrieve (DAR) function

10 WDCGG website entrance for data submission Previous Now Data By Metadata If you register, you obtain the UID and password. If you input your ID and password in login form, and select Contributor button, then you could put the metadata on record of the WDCGG webpage. 10

11 Summary of data submission and editing the metadata For Data Contributors Reporting the data on Web site First of all, you should register your ID on the WDCGG website. And then, login the WDCGG. The procedure for data submission is constructed as the following three steps: 1. Select the species of the data; 2. Edit the metadata for the data; 3. Upload the data file on the WDCGG website. Editing page for data contributors Edit the Metadata Upload the data file on the WDCGG web

12 Data products (text format for delivery) C01 TITLE: CO2 hourly mean data C02 FILE NAME: ryo239n00.jma.as.cn.co2.nl.hr2013.dat C03 DATA FORMAT: Version 1.0 Header C04 TOTAL LINES: 5120 C05 HEADER LINES: 32 C06 DATA VERSION: C07 STATION NAME: Ryori C08 STATION CATEGORY: Regional C09 OBSERVATION CATEGORY: Air sampling observation at a stationary platform C10 COUNTRY/TERRITORY: Japan C11 CONTRIBUTOR: JMA C12 LATITUDE: C13 LONGITUDE: N/A C15 NUMBER OF SAMPLING HEIGHTS: 1 Header C14 ALTITUDE: 260 Current Fixed C16 SAMPLING HEIGHTS: 20 C17 CONTACT POINT: y-fukuyama@met.kishou.go.jp C18 PARAMETER: CO2 C19 COVERING PERIOD: C20 TIME INTERVAL: hourly C21 MEASUREMENT UNIT: ppm C22 MEASUREMENT METHOD: NDIR C23 SAMPLING TYPE: continuous The number of text formats C24 TIME ZONE: Local time UTC+9 C25 MEASUREMENT SCALE: WMO X2007 scale C30 COMMENT: Some C31 C32 DATE TIME DATE TIME CO2 ND SD F CS REM : : : : Text >>>> Data Set Name : co2_mnm_surface-insitu_19_9999_hourlydata Data_Set_Version : GLOBAL ATTRIBUTES site_code : MNM site_gaw_id : MNM New SAMPLE This is subject to a major change. header_lines : 180 VARIABLE ATTRIBUTES site_code:long_name : site_name_abbreviation. site_code:comment : Site code is an abbreviation for the sampling site name. Easily machine-readable VARIABLE ORDER site_code year month day hour minute second year month day hour minute second value value_unc nvalue latitude longitude One altitude elevation intake_height instrument Qcflag measurement_method scale flask_no MNM MNM Text / NetCDF Flexible

13 Data and metadata GGMT-2013 GGMT-2015 Submission Submission entire historical dataset To avoid discrepancy between Laboratories and Data Centre due to WMO scale migration Internal re-calibration One-to-one correspondence between data and metadata Meta-dataset has its own version

14 Synchronization GGMT-2013 GGMT-2015 When WDCGG moves on to a new system, is it possible for Contributors to submit entire historical data? Laboratories Reflecting WMO scale migration Internal re-calibration WDCGG Maintained Original data Better Synchronization Archived data

15 Unified data flags and Submission of Averaged values Data flags delivered from WDCGG to data users Common use by data contributors should be promoted 1: valid(background) 2: valid Data considered "background" Data considered valid other than "background" 3: invalid Data considered unfit for use(questionable data, erroneous data and missing values) Submission of Monthly averaged values - calculated by data contributors

16 1. Introduction of new WDCGG website 2. Starting to gather and provide satellite data at WDCGG

17 Integrated Global Greenhouse Gas Information System(IG 3 IS) Atmospheric chemistry transfer models and inversion method Information based on observations and analysis of greenhouse gases ( top-down ) Sophisticated data or assimilation method New data (Satellites etc) Current observation network Summary based on the socioeconomic emission inventory reports ( bottom-up )

18 User s Benefit of satellite data Wide coverage with Same sensors So many data from Many stations (positions) but limitation by the condition of clouds and Sun elevations Space representative to Modeling compatibility but Bias error from retrieval methods exists Validation is difficult because of column (XCO 2 ) values Technical document of retrieval methods and data QC are needed Essential information for users time, positions, values (XCO 2, XCH 4, ) QC flags, uncertainty of observation data, A Priori information of retrieval, Product version, HDF5 file format could be the standard for data distribution

19 Thank you for your attention!

20 WMO International Cloud Atlas 2. Starting to gather and provide satellite data at WDCGG