Data Access for climate studies

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Data Access for climate studies

• Asia-Pacific Data Research Center (APDRC) at the
  IPRC

START Institute on The Asian Monsoon System
Prediction of Change and Variability James T.
Potemra UH January 2008
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Outline

• Working with large, climate-relevant data sets
• Where to find such data
• How to access such data
• Web-based browsers
• Binary access protocols
• First look at IPRC data center
• http//apdrc.soest.hawaii.edu

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Challenges for Distribution of Climate Data

• disparate data types
• station data, gridded data, ocean data,
  atmospheric data, levels, time-series, etc.
• disparate data formats
• netcdf, grib, flat binary, etc.
• datasets can be large
• coupled model out, long integrations, high
  resolution (time/space), etc.
• users needs are widely varying

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Accessing Data

• Traditional methods
• ftp, rcp
• New method
• OPeNDAP
• Web-based browsers
• LAS
• DCHART
• EPIC
• But first a word about GIS/WMS

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Data serving at the APDRC

• Server integration based on binary access via
  OPeNDAP and web-based access via LAS/DCHART
• Binary access, gridded ? OPeNDAP
• Binary access, non-gridded ? DAPPER
• Web-based access, gridded ? LAS
• Web-based access, non-gridded ? DCHART/EPIC

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APDRC Data Holdings
1. DATA ARCHIVE
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APDRC Data Holdings
1. DATA ARCHIVE
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APDRC Data Holdings
1. DATA ARCHIVE
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2. DATA DISCOVERY
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2. DATA DISCOVERY 3. METADATA
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Serving gridded products

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Serving non-gridded products
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EPIC access to argo data
Select subregion
Sort function
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Further subset
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Plot specific station
Plot/save along section
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Data Transport

• OPeNDAP
• GrADS DODS Server (GDS)
• THREDDS DODS Server (TDS)
• NFS for internal use

4. DATA TRANSPORT
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netCDF
TOMCAT
LAS
Web Browser
GDS GrADS Anagram
Binary
HDF4
Ferret
OPeNDAP
GRIB
GrADS
THREDDS Server
Matlab
OPeNDAP
GFDL
JPL
NCEP
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APDRC

• Availability
• Overview of site
• Data listing
• Servers
• LAS example
• OPeNDAP examples

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Key data sitesUS Government

• NASA
• NOAA

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NASA Sites

• Distributed Active Archive Center (DAAC)
• Earth Observing System (EOS) Data Gateway
• EOSDIS Core System Information (ECS)
• Global Change Master Directory (GCMD)
• National Space Science Data Center (NSSDC)
• Data and Information Service Center (DISC) (same
  as DAAC)

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Other sites NOAA Agencies

• National Weather Sevice (NWS)
• National Environmental Satellite, Data, and
  Information Services (NESDIS)
• Fisheries (NMFS)
• Ocean Services (NOS)
• Research (OAR)

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NESDIS sites

• Climate Data Center (NCDC)
• Geophysical Data Center (NGDC)
• Ocean Data Center (NODC)
• Coastal Data Center (NCDDC)

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Key data sitesNon-government US

• International Research Institute for Climate and
  Society (IRI)
• Center for Ocean/Land/Atmosphere Studies (COLA)
• Asia-Pacific Data-Research Center (APDRC)
• Unidata
• National Center for Atmospheric Research (NCAR)

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Key data sitesNon-US

• Japan Ocean Data Center (JODC)
• Asia-Pacific Network on Climate Change
• International Oceanographic Data Exchange (IODE)