Transcript Slide 1

National Aeronautics and Space Administration
NASA EOSDIS Outreach
Earth System Science Data and Services
Presented by: Jennifer Brennan, NASA EOSDIS Outreach Lead
Thursday, August 2, 2007
IGETT Institution
Del Mar College,Corpus Christi, TX
www.nasa.gov
Presentation Outline
• Who we are- Data centers & their disciplines
• What we do
– Overview of Earth system science data information,
products and services
– Examples of data specific to your individual projects
• Let us help you find and use NASA data
– High level overview of selected access methods
Data Centers and their disciplines
ASF DAAC -Alaska Satellite Facility DAAC
Fairbanks, Alaska
Synthetic Aperture Radar(SAR), Sea Ice, Polar Processes and Geophysics
GES DISC DAAC- GSFC Earth Sciences DAAC
Greenbelt, MD
Atmospheric Composition, Atmosphere Dynamics, Global Precipitation, Ocean
Dynamics and Solar Irradiance
GHRC- Global Hydrology Resource Center
Huntsville, AL
Hydrologic Cycle, Severe Weather Interactions, Lightning, Convection
LaRC DAAC- Langley Research Center DAAC
Hampton, VA
Radiation Budget, Clouds, Aerosols, Tropospheric Chemistry
Data Centers and their discplines
LP DAAC- Land Processes DAAC
Sioux Falls, SD
Land Processes
NSIDC DAAC- National Snow and Ice Data Center DAAC
Boulder, CO
Snow and Ice, Cryosphere and Climate
ORNL DAAC- Oak Ridge National Laboratory DAAC
Oak Ridge, TN
Biogeochemical Dynamics, Ecological Data, Environmental Processes
PO.DAAC-Physical Oceanography DAAC
Pasadena, CA
Oceanic Processes, Air-Sea Interactions
SEDAC- Socioeconomic Data and Applications Data Center
Palisades, NY
Population, Sustainability, Geospatial Data, Multilateral Environmental
Agreements
Data Centers and their Disciplines (cont’d)
• Moderate Resolution Data Center-MRDC
MODIS Level 1 and Atmosphere data products
• Ocean Biology Processing Group
Ocean color, ocean biology data
What we do: EOSDIS Data & Services
NASA’s Earth Observing System (EOS) is composed of a series of
satellites, scientific research, and a data collection and management
system known as EOS Data and Information System (EOSDIS).
EOSDIS has eight discipline-specific Distributed Active Archive
Centers (DAACs), and three cooperating or related data centers that
process, manage, document, archive, and distribute a variety of Earth
system science data. These data centers are united in a common
mission: to archive Earth science data, to distribute the data to the
research community, and to support the data. The data centers provide
a wide variety of data related services (e.g.on-demand data products,
subsetting ,visualization and data manipulation tools, etc.) to their data
users via their User Services Offices (USOs). The USO is each data
center’s interface to the public.
About our data: Some statistics
– Presently, eight EOSDIS data centers and three related data providers
support the daily production of over 3 terabytes of interdisciplinary Earth
system science data from either EOS missions (e.g., Terra, Aqua, Aura,
ICESat, Jason, QuikSCAT, SORCE), pre-EOS missions(e.g., SeaWiFS,
TOMS-EP, TRMM, UARS), other Earth system science data and NASA
funded field campaigns (e.g.,BOREAS, FIFE, SAFARI) and human
dimensions derived data (e.g., Gridded Population of the World, Global
Urban-Rural Mapping Project (GRUMP)
– In FY 2006 alone, over 65 million Earth system science data products,
over 1086TB (~3 TB daily) of data and information about NASA
missions, instruments and data products, was disseminated to over
three million distinct users within the science, government, industry,
education, and policy maker communities around the world.
– These data are collected by approximately 70 instruments onboard
more than 43 satellite and aircraft platforms.
About our data- some basics
– Earth system science data range from airborne
sensor data, to remotely sensed Earth Observing
data to validation data sets
– Spatial and temporal resolutions can and do vary by
platform, sensor and data product
– Most of the data is in either hdf or hdf-eos format
– Online access to EOSDIS data available through
multiple search and order interfaces
– Tools for processing and translating data into GIS
formats are available
– Each User Services Office has experts available to
you for data product, data information and data tools
inquiries
General types of data products
• EOSDIS data products are either standard data products
or special data products
• If they are standard:
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Generated as part of a research investigation using EOS data
Recognized to have wide research utility
Generated routinely
Produced for spatially and/or temporally extensive sets of data
Produced at the DAACs or by Science Investigator-led
Processing Systems(SIPs).
Our data: In a nutshell
• Most of the products are considered standard
data products
• Data are processed at various levels ranging
from Level 0 to Level 4
• Level 0 products are raw data at full instrument
resolution
• At higher levels, data are converted into more
useful parameters and formats.
• All EOS instruments must have Level 1 SDPs.
Most have products at Levels 2 and 3
Our data: In a nutshell
• If they are special:
– Generated as part of a research investigation using
EOS data
– Produced for a limited region or time period
– Not accepted as standard by the EOS Investigators
Working Group(IWG) and NASA HQ.
– Referred to as “special data products” to distinguish
them from other non-standard products such as
ancillary data sets
– Normally generated at the investigators’ Scientific
Computing Facilities(SCFs).
Data Sets: Disciplines and measurements
• Atmosphere:
– Atmospheric temperature
– Atmospheric humidity
– Winds (wind speed, wind direction, vertical air motions, upper air
winds)
– Precipitation
– Lightning (events, area, flash structure)
– Tropospheric Chemistry(ozone,precursor gases, carbon dioxide)
– Stratospheric chemistry (Ozone, CIO, BrO)
– Aerosol Properties(stratospheric and tropospheric)
– Cloud properties(amount, optical properties, height)
– Radiative Energy Fluxes(Top of atmosphere, surface)
Data Sets: Disciplines and measurements
• Calibrated Radiance and Imagery
– Radiance/Brightness Temperature
• Cryosphere
– Land ice (ice sheet topography, ice sheet volume, ice sheet
volume change, glacier change)
– Sea ice (Extent, concentration, motion, temperature)
– Snow Cover (extent, water equivalent, depth)
– Gravity
• Human Dimensions
– Population and Land Use
– Biodiversity and Ecosystems
– Climate Change
– Human and Environmental Health
Data Sets: Disciplines and measurements
• Land
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Land Cover and Land Use Change
Vegetation Dynamics
Suface Temperature
Surface Topography(Elevation, slope, DEMs)
Soils
Fire Occurrence(Extent, thermal anomalies)
Volcanic Effects (Frequency of occurrence, thermal
anomalies, impact
– Soil wetness(soil moisture)
– Gravity
Data Sets: Disciplines and measurements
• Oceans
– Surface temperature(SST)
– Phytoplankton and Dissolved Organic Matter
– Surface Wind Fields
– Heat Flux
– Ocean Surface Topography (height, waves, sea level, tide
models)
– Sea Ice
– Atmospheric Moisture(Oceanic only)
– Multiparameter data collections
– Gravity
• Solar Irradiance
– Total Solar Irradiance
– Ultraviolet Spectral Irradiance
Let us help you use your data
NASA’s EOSDIS Data Centers provide tools for image processing and
analysis,and for searching and subsetting data. These tools have been
created by the Data Centers, NASA support staff, or external software
developers.
HDF-EOS Tools
-Download tools to read, visualize, and analyze data
-Tools designed for data in HDF and HDF-EOS formats
Subsetting and Reprojection Tools
-Product-specific data subsetting and reprojection available
-Subsetting by spatial coverage, temporal coverage, and
data-specific variables
Geographical Information System (GIS) Capabilities
-Data Centers offer data and tools for utilizing GIS functionality
-Some products are available as shapefiles and other standard
GIS formats
DAAC Data Search and Order
• The data centers have individual online systems that
allow them to provide unique services for users of a
particular type of data. The center specific systems
emphasize data products, services, and data-handling
tools unique to the data center.
• Member data centers are distinguished from one another
by their specific Earth science discipline
DAAC Data Search and Order
• The data centers of the DAAC Alliance provide their users
with the following services and information:
– Data Center Services
• Center-unique search-and-order systems
• Specific Earth science discipline searches
• Specialized data set tools
– User Services
• Assistance in selecting and obtaining data
• Access to data-handling and visualization tools
• Notification of data-related news
• Technical Support and referrals
For more information about the data centers of the DAAC
Alliance and their data and services, see:
http://nasadaacs.eos.nasa.gov
How to find and get your data
• EOS Data Gateway
– Primary access point to EOSDIS and other ESE data
holdings archived at the nine data centers of the DAAC
Alliance
– Search-and-order tool allows users, including those without
specific knowledge of the data to:
• Search science data holdings(variety of search methods
available-[e.g.geographical, parameter, temporal,etc.])
• Retrieve high-level descriptions of data sets
• Retrieve detailed descriptions of the data inventory
• View browse images
• Place orders for data products
http://eos.nasa.gov/imswelcome
EOS Data Gateway Features
• Guide documentation
– Enables user to search archive centers online
document servers for information on
datasets,platforms,instruments, etc. associated with
the catalogued data
• *HDF Tools Access: http://www.hdfgroup.org
– Download tools to read, visualize, and analyze data
in hdf and hdf-eos formats
*No longer an EDG feature, see url separately for
assistance w/hdf or hdf-eos format and tools
EOS Data Gateway Features(cont’d)
• Browse Capability(available for select data sets)
– Allows user to explore a list of data sets or granules returned
by a search by viewing:
• Temporal coverage
• Spatial coverage
• Attributes(metadata)
• Related documents(guide search)
• Browse Images
• Order function
– Allows user to :
• Select data for ordering
• Choose packaging information
• Enter ordering information(such as shipping information)
• Place an order
Looking for Data and Services?
• Global Change Master Directory(GCMD)
– A comprehensive database of interdisciplinary Earth science
data and services that provide vital information to help determine
whether the data or service meets the user’s needs.
• Descriptions include information such as location of data or
service associated investigators and other contacts,spatial
and temporal coverage of the data, resolution of the data,
and links to the actual data or service
Looking for data or services?
• The GCMD database contains more than 13,500
Earth science data set descriptions, and more than
750 Earth science services(e.g. software,
analytical tools,educational resources, etc.)
For more information about the Global Change
Master Directory see, http://gcmd.nasa.gov
Benefits of GCMD
• Can be searched for EOSDIS and other ESE
data sets by using free text or an extensive set
of keywords covering all areas of Earth science
research including the atmosphere,
biosphere,hydrosphere and oceans, snow and
ice, geoscience, paleoclimatology, land surface
and human dimension of global change.
Features of GCMD
• Data sets can be searched by platform, spacecraft,
instrument, data center, geographic location,or project
• If a dataset exists in the EDG,a special link will connect
the user directly from the description to the EDG so that
the data can be browsed or ordered.
• Specialized list of Earth science related services are
searchable
– Examples range from specialized tools for
browsing,manipulating, and visualizing EOS data products to
Earth science educational products and environmental hazard
advisory services
What does all of this mean?
• If you are looking for data…..
– We have a wide variety of Earth system science data you can
use
– We can show you how to access these data
– There are tools to help you process, and convert these data into
the formats you need
– Representatives at each USO are there to help you use these
data
Other Educational Resources
• For Earth System science imagery see,
http://visibleearth.nasa.gov
• Data center specific image galleries, Google
Earth oriented tools, specific user-friendly data
tools (will show examples)
• NASA Earth Observations
http://neo.sci.gsfc.nasa.gov
• Global Change Master Directory
Educational/Outreach Resources
http://gcmd.nasa.gov
For more information
• For more information about the NASA EOSDIS data
centers, data products and data services see,
http://nasadaacs.eos.nasa.gov
• For NASA EOSDIS Outreach Resources see,
http://eos.nasa.gov/outreach
• Questions?
Contact: Jennifer Brennan, NASA EOSDIS Outreach
Lead
E-mail: [email protected]
Telephone: 301-352-4628
Fax:
• Thank you for your time!!
Any questions??