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September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 1
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
MODIS Data Product Distribution from the
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
Darryl Nickless
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 2
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
• MODIS Data Access Methods Overview• GES DAAC Search and Order Interface (a.k.a. WHOM)• MODIS Multiple Data Ordering Page• EOS Data Gateway (EDG)• Data Pool
• Command-line FTP access• WHOM for Data Pool
• Terra and Aqua Orbit Tracks
• GES DAAC MODIS Archive Volume • GES DAAC MODIS Data Distribution Statistics
Please note that there are click-by-click ordering tutorials (PPT format) on the MODIS tutorial CDs (available in the lobby).
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 3
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
Before ordering any data:
• select the Earth Science Data Types (ESDTs) from MODIS that meet your needs.
With this information, you can easily begin the data search and order process.
If you need any assistance selecting the data, please send your questions to: [email protected]
Useful links regarding MODIS data can be found on the MDST web site: http://daac.gsfc.nasa.gov/MODIS/
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 4
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
http://daac.gsfc.nasa.gov/MODIS/data_access.shtml
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 5
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
• GES DAAC Search and Order Interface (a.k.a. WHOM)• MODIS Multiple Data Ordering Page
• EOS Data Gateway (EDG)
• Data Pool (FTP and WHOM for Data Pool)
MODIS/TerraMODIS/AquaOther DAAC data
AtmosphereOceanRadiometric/Geolocation
AtmosphereOceanRadiometric/Geolocation
ESDT
ESDT
2000…
2002…
Dynamic Search for any NASA ESE Data
Results based on search criteria
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 6
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
GES DAAC Search and Order (a.k.a. WHOM)
http://daac.gsfc.nasa.gov/data/
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 7
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 8
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 9
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 10
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 11
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
Select year 2001
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 12
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
After you place your order and it is successfully processed by the GES DAAC, you will receive a delivery notice email like this one that explains where/how to pick up your data. This email will have contact information for the User Services group in case you have any questions.
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 13
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
Subsetting Ocean Data
•Ocean Level 2 Parameter Subsetting (WHOM)
-Gets the native HDF file from the archive, extractsthe parameters you request, and merges all of them together in a new HDF file with the geolocation information
•Ocean Level 3 Parameter Subsetting (WHOM, MDOP, EDG, Data Pool)
-Does not do any manipulation to files•Ocean Level 3 Spatial Subsetting (WHOM for Data Pool)
-Option to subset by predefined geographical region
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 14
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
MODIS Terra OceanLevel 2 Subsetting Product-This is on-demand parameter subset of MODOCL2, MODOCL2A, MODOCL2B and MOD28L2
WHOM -- MODIS Ocean Level 2 Parameter Subsetting
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 15
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
Select the parameters for each data product-MODOCL2-MODOCL2A-MODOCL2B-MOD28L2
The available granules are displayed
Select “Add Selections to Order”
Geolocation Datainserted into output
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 16
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
MODIS Multiple Data Ordering Page (MDOP)
http://daac.gsfc.nasa.gov/daac-bin/MODIS/Data_order.pl?PRINT=1
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 17
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
Multiple Product Selection fromRadiometric/Geolocation, Atmosphere and Ocean.
Can change platforms – selectAqua or Terra
Level 3 and 4 Ocean Products-Select “Level 3 & 4” button
Temporal Selection
Make Spatial Selection firstYou can type in the coordinates or use a map to select the area
When you are ready,Click the “Start Search” Button
Option to filter data by Quality Attributes
Additional Utilities to assist in your search
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 18
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
MDOP Level 3 Mapped and Binned Ocean Data
Spatial Resolution Selection
Map Type Selection
Time Average Selection
If you want Binned products, you need to check the box
Enter your selection and begin to search for granules
Level 3 Ocean Color and SST Parameters = Parametersubsetting
Review Definitions
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 19
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
MDOP Level 4 Mapped and Binned Ocean Data
Spatial Resolution Selection
Level 4 Mapped Products Section
Semi-Analytic, 8-days Mapped
Semi-Analytic, Yearly Mapped
Statistical YearlyMapped
Enter your selection and begin to search for granules
Select for Definitions
Level 4 OceanPrimary Parameters
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 20
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
Data Poolftp://g0dps01u.ecs.nasa.gov/
MDST 11/22/2002
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 21
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 22
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
WHOM for Data Poolhttp://daac.gsfc.nasa.gov/data/datapool/
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 23
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 24
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
Download files by right clicking with your mouseand saving to your disk.
Data Pool offers a sample browse Image of the data product for usersTo view
You can select many files and don’t have to complete an order
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 25
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
The available data for your selections will be displayed. You can further subset your data by geographical region, this is Spatial Subsetting.
WHOM for Data Pool -- MODIS Ocean Level 3 Spatial Subsetting(only available for data on the Data Pool)
Then click the ‘Submit’ button to proceed
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 26
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
MODIS Terra for
11/16/2002
MODIS Aqua for 11/16/2002
Images courtesy University of Wisconsin SSEC Data Center
Information on the Terra and Aqua satellite orbital track can be found on http://www.ssec.wisc.edu/datacenter/terra/ and on http://www.ssec.wisc.edu/datacenter/aqua/
MODIS Terra and Aqua Satellite Predicted Passes
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 27
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
As of 8/1/2003 for both MODIS/Terra and MODIS/Aqua:• There were 15,704,804 MODIS granules available for public ordering• Those granules have a total volume of 1,268,628 gigabytes
GES DAAC Archive Statistics
GES DAAC - MODIS Archived Granulesas of 8/1/2003
7428919Radiometric / Geolocation
48%
3821583Atmosphere
24%
4454302Ocean28%
GES DAAC - MODIS Archived Volume in Gigabytes as of 8/1/2003
231884.64Ocean18%
90313.75Atmosphere
7%
946429.43Radiometric / Geolocation
75%
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 28
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
GES DAAC - MODIS # of Distributed Granules (Public) as of 8/1/2003
714689Radiometric / Geolocation
37%
1019687Atmosphere
53%
196876Ocean10%
As of 8/1/2003 for both MODIS/Terra and MODIS/Aqua:• The GES DAAC has filled 612,279 requests from 3,294 unique users of MODIS Data (Science Team subscriptions for the data are not counted here)• Those requests were for a total of 1,931,252 granules, which have a total volume of 179,112 gigabytes
GES DAAC Distribution Statistics
GES DAAC - MODIS Distributed Volume (Public)as of 8/1/2003
124992.62Radiometric / Geolocation
70%
35357.24Atmosphere
20%
18761.83Ocean10%
September 4, 2003 MODIS Ocean Data Products Workshop, Oregon State University 29
Goddard Earth Sciences (GES) Distributed Active Archive Center (DAAC)
Please send any questions you may have to:
Useful links regarding MODIS data can be found on the MODIS Data Support Team (MDST) web site:
http://daac.gsfc.nasa.gov/MODIS/