Hegde, Mahabal

Lynnes, Christopher S.

NASA Technical Reports Server

8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Federated Giovanni
Multi-sensor Data Sharing and Visualization 
http://giovanni.gsfc.nasa.gov/giovanni/
Mahabal Hegde
ADNET Systems/NASA GESDISC
maha.hegde@gmail.com
Principal Investigator: Christopher Lynnes
Project Funding:  NASA ROSES ACCESS 2013
https://ntrs.nasa.gov/search.jsp?R=20150023550 2019-08-31T04:40:04+00:00Z
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
What is Giovanni?
● Stands for “Geospatial Interactive Online 
Visualization and Analysis”
● Developed at NASA’s Goddard DISC: 
originated in 2002
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Giovanni: Capabilities
● Allows interactive exploration of gridded data
● 643 data variables from 16 instruments and 3 
NASA Earth Science data centers
● Easy to share URLs for results and user 
selections
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Giovanni: Screenshots
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
● 21 services (e.g. Time Average, Correlation )
● 10 visualizations (e.g. Map, Time Series )
Giovanni: Capabilities
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Giovanni: Capabilities
● Support for shape selection and unit 
conversions
Credits: Dr. Zhong Liu
               GMU/NASA GSFC
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Giovanni: Usage
● Usage: 150+ unique users per day 
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Giovanni: Usage
● Citations by its users: averages 200 
publications per year 
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Examples: Atacama Desert Flooding
Credits: Dr. James Acker
               ADNET Systems/NASA GSFC
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Examples: Historic Rainfall in South India
Credits: Hal Pierce (NASA/SSAI) and Giovanni
Provided By: Dr. Dalia Kirschbaum, NASA GSFC
“Worst rain in 100 years” affects southeastern India. Extremely heavy rainfall caused deadly 
flooding in the middle of the month of November. Record setting rainfall has again caused deadly 
flooding in southern India on November 29th through December 3rd, with more anticipated in 
coming days. This IMERG analysis shows that unusually heavy rainfall totals of over 400 mm (15.7 
inches) fell over southeastern India. Even higher totals of up to 490 mm (19.3 inches) are shown in 
the Bay Of Bengal just off the Indian coast. 
Chennai, India: 240 mm 
(11/29-12/3)
Puducherry, India: 357 mm 
(11/29-12/3)
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Giovanni Ecosystem
Catalog
     Workflow 
     Engine
Collection 
Metadata
Repository
Website
EOSDIS 
Common Metadata 
Repository
Mirador
Giovanni
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Federated Giovanni: Genesis
● User demand for non-GESDISC data in 
Giovanni
● Outside interest in hosting their own Giovanni 
instances 
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Federated Giovanni: Objectives
1. Allow other data centers to leverage 
Giovanni’s services
Partner Data Centers:
a. NASA GESDISC
b. NASA JPL/PO.DAAC
c. NASA MODAPS
d. NASA OB.DAAC
e. USGS/NASA LP DAAC
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Federated Giovanni: Objectives
2. Enable users to compare data from multiple 
data centers
Example: 
Comparison of MODIS and OMI Aerosols
3. Development of services by wider community
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Enabling Federation
● Support for non-GESDISC data in Giovanni
Process Standard/Tool
Data Search ESIP OpenSearch
Data Access OPeNDAP
Data Format netCDF
Data Catalog Apache Solr
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Enabling Federation: Tools
● Web based data catalog curation
● Utility for copying data between catalogs
e.g. copy_data.pl “Data ID” “Source Catalog URL” “Target Catalog URL”
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Federated Giovanni: Data Sharing
GESDISC
Giovanni
MODIS Aerosols
OMI Aerosols
OMI Aerosols
MODIS Aerosols
Import data
MODAPS
Giovanni
MODIS Aerosols
MODIS Aerosols
Import catalog
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Enabling Federation: APIs
● API for plugging in algorithms
Sample Service Specification File:
SERVICE_NAME = AcMp
SERVICE_DESCRIPTION = "Accumulation of measurement over time at each grid point"
SERVICE_LABEL = "Map, Accumulated"
PLOT_TYPE = INTERACTIVE_MAP
ALGORITHM_CMD = g4_accumulate.pl -y ttl
OUTPUT_FILE_ROOT = accumulate
MAX_POINTS = 7568640000
DATELINE_METHOD =
CONVERT_UNITS_STEP = WRAPPER,WRAPPER
SERVICE_HELP = http://disc.sci.gsfc.nasa.gov/giovanni/documents/ag/user-
manual#g4_accumulate
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Enabling Federation: Distribution
● Hosted on NASA Earthdata Code Collaborative
● Distributions are availables as:
○ RPMs
○ Docker Image
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Federated Giovanni Adoption: Goals
● Data in NASA GESDISC Giovanni from five 
(5) data centers
● Giovanni instances at four (4) data centers
1. NASA GESDISC
2. NASA MODAPS
3. NASA OB.DAAC
4. NASA PO.DAAC
5. NASA /USGS LP DAAC
1. NASA GESDISC
2. NASA MODAPS
3. NASA OB.DAAC
4. NASA PO.DAAC
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
LPDAAC
MODIS NDVI
Federated Giovanni Ecosystem
GESDISC
Giovanni
Catalog
MODAPS
Giovanni
Catalog
OBDAAC
Giovanni
Catalog
PODAAC
Giovanni
Catalog
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Federated Giovanni Adoption: Status
● Data in NASA GESDISC Giovanni from three 
(3) data centers
● Giovanni instances in different stages of 
deployment at two (2) data centers
1. NASA GESDISC
2. NASA MODAPS
3. NASA/USGS LP DAAC
1. NASA PO.DAAC
2. NASA MODAPS
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Things in the pipeline
● API for adding visualization
● Open sourcing of Giovanni
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Acknowledgements
NASA GESDISC
Christopher Lynnes (PI), Steven Kempler, James Acker, Keith Bryant, Edward Seiler, Richard 
Strub, Christine Smit, Peisheng Zhao, Jake Davis 
NASA MODAPS
Virginia Kalb, John Hord
NASA OB.DAAC
Sean Bailey, Robert Lossing
NASA JPL
Chris Mattman, Ross Laidlaw, Jessica Hausman
 
USGS LP DAAC
Cody Hendrix, Jason Werpy
8/30/2013
 
Goddard Earth Sciences 
Data  Information Services Center
GES – DISC
Questions?
Thank You!
Search “NASA Giovanni”
Or
http://giovanni.gsfc.nasa.gov


Federated Giovanni Multi-Sensor Data Sharing and Visualization

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