AMSR-E Cryosphere
Science Data Product Metrics
Prepared by the ESDIS SOO Metrics Team
for the Cryosphere Science Data Review
January 11-12, 2006
Purpose
• Complements the data products table of metrics
• Presents the discipline data by significant parameters
– # of products, archive, distribution, # of users
• Allows reviewers to distinguish individual products for
further analysis
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ECS Product Data Metrics Summary
Field
Acronym
Definition
ESDT
Earth Science Data Type -- product mnemonic
ESDT Name
Description
DAAC
Archive center
Level
Product processing level
Discipline
A primary, scientific application area for which a product is used
Granules Archived
Total granules stored as of 09/30//2005 and granules archived per FY
GA
Archive Volume
Total storage (GBs) as of 09/30/2005 and amount archived per FY
AV
Distinct End Users per Product
(ESDT) per FY
Counts of unique users of a product within a FY
Total End Users per Product (ESDT)
per FY00-FY05
Sum of users over the five year period; five year total is the sum of all years and therefore not a total of
unique users over that time frame
UU
Distribution Volumes per ESDT per
FY & Total
Volume of the product (GBs) distributed within a FY plus the five year total
DV
Distribution Granules per ESDT per
FY & Total
Number of granules of the product distributed within a FY plus the five year total
DG
Orders per Product (ESDT) per FY &
FY00-FY05 Total
Number of orders (both unique and unknown) of the product within a FY plus the five year total
Production flag
Indicates this product is used to produce other products or for QA testing
Product Dates
Archive Date, Product Release Date, Discontinued Date
Comment
Used sparingly, provides qualitative guidance to help understand product
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Sample Science Data Product Review
Charts and Tables
• Standard set of charts & tables
–
–
–
–
Table characterizing the discipline data set
Detailed descriptions of products
Archive volume of discipline data by product level
Focus on L2 ESDTs
• Product by End User, Product by Archive Volume
• Table of products with selected parameters
– Focus on L3 ESDTs
• Same as above
– Scatter plots (3) of ESDTs by demand and distribution parameters
– Sample time profiles
• Archive, distribution, users and orders by FY
• Data pool distribution
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Summary Table of
AMSR-E Cryosphere Data Products
Products
L0
L1A
L2
L3
Total
# of Products (ESDTs)
1
1
1
6
9
Min # of Unique End Users
Requesting an ESDT
16
37
198
12
Max # of Unique End Users
Requesting an ESDT
16
37
198
48
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AMSR-E Cryosphere Products
Detailed Descriptions
ESDT
Name
Detailed Description
AE_L2A
AMSR-E/Aqua L2A
Global Swath SpatiallyResampled Brightness
Temperatures (Tb)
The AMSR-E Level-2A product contains brightness temperatures (T Bs) at 6.9 GHz, 10.7 GHz, 18.7
GHz, 23.8 GHz, 36.5 GHz, and 89.0 GHz. Data are resampled to be spatially consistent, and
therefore are available at a variety of resolutions that correspond to the footprint sizes of the
observations (56 km, 38 km, 24 km, 21 km, 12 km, and 5.4 km, respectively). Each swath is
packaged with associated geolocation fields. Data are stored in HDF-EOS format.
AE_DYSNO
AMSR-E/Aqua Daily L3
Global Snow Water
Equivalent EASE-Grids
The AMSR-E Level-3 daily snow water equivalent (SWE) data set contains SWE data and quality assurance
flags mapped to Northern and Southern Hemisphere 25 km Equal-Area Scalable Earth Grids (EASE-Grids).
Data are stored in HDF-EOS format.
AE_SI12
AMSR-E/Aqua Daily L3
12.5 km Tb, Sea Ice
Conc., and Snow Depth
Polar Grids
The AMSR-E Level-3 gridded sea ice product includes brightness temperatures (T Bs) at 18.7 through 89.0
GHz, sea ice concentration, and snow depth over sea ice. Data are mapped to a polar stereographic grid at
12.5 km spatial resolution. Sea ice concentration and TBs include daily ascending averages, daily
descending averages, and daily averages; snow depth over sea ice data is a five-day running average. Data
are stored in HDF-EOS format.
AE_SI25
AMSR-E/Aqua Daily L3
25 km Tb, Sea Ice
Temperature, and Sea
Ice Conc. Polar Grids
The AMSR-E Level-3 gridded sea ice product includes brightness temperatures (T Bs) at 18.7 through 89.0
GHz, sea ice concentration, and snow depth over sea ice. Data are mapped to a polar stereographic grid at
12.5 km spatial resolution. Sea ice concentration and TBs include daily ascending averages, daily
descending averages, and daily averages; snow depth over sea ice data is a five-day running average. Data
are stored in HDF-EOS format
AE_SI6
AMSR-E/Aqua Daily L3
6.25 km 89 GHz
Brightness Temperature
(Tb) Polar Grids
The AMSR-E Level-3 gridded 89.0 GHz brightness temperature (TB) product at 6.25 km resolution is an
intermediate product during processing of AMSR-E Level-3 sea ice products at 12.5 km and 25 km
resolution. Values are daily average, daily ascending, and daily descending horizontally and vertically
polarized TBs mapped to a polar stereographic grid at 6.25 km spatial resolution. Data are stored in HDFEOS format.
AE_5DSNO
AMSR-E/Aqua 5-Day L3
Global Snow Water
Equivalent EASE-Grids
The AMSR-E Level-3 5-day snow water equivalent (SWE) data set contains SWE data and quality assurance
flags mapped to Northern and Southern Hemisphere 25 km Equal-Area Scalable Earth Grids (EASE-Grids).
Data are stored in HDF-EOS format.
AMSR-E/Aqua Monthly
L3 Global Snow Water
Equivalent EASE-Grids
The AMSR-E Level-3 monthly snow water equivalent (SWE) data set contains SWE data and quality
assurance flags mapped to Northern and Southern Hemisphere 25 km Equal-Area Scalable Earth Grids
(EASE-Grids). Data are stored in HDF-EOS format.
AE_MOSNO
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AMSR-E Cryosphere
Products Volume
Placeholder for Archive Volume
by Level column chart
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AMSR-E Cryosphere L2 Products
ESDT
AE_L2A
Name
AMSR-E/Aqua L2A Global Swath
Spatially-Resampled Brightness
Temperatures (Tb)
DAAC
Date
GA
Total
AV
Total
UU
Total
O
Total
GD
Total
DV Total
NSIDC
8/20/2002
35,328
2,705.1
198
10,227
240,412
18,411.8
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AMSR-E Cryosphere L3 Products
ESDT
Name
DAAC
Date
GA
Total
AV
Total
UU
Total
O
Total
GD
Total
DV
Total
AE_DYSNO
AMSR-E/Aqua Daily L3 Global Snow Water
Equivalent EASE-Grids
NSIDC
5/27/2003
1,171
2.3
48
561
8,633
17.7
AE_SI12
AMSR-E/Aqua Daily L3 12.5 km Tb, Sea Ice Conc.,
and Snow Depth Polar Grids
NSIDC
5/12/2004
1,172
65.7
46
300
9,353
525.2
AE_SI25
AMSR-E/Aqua Daily L3 25 km Tb, Sea Ice
Temperature, and Sea Ice Conc. Polar Grids
NSIDC
5/12/2004
1,172
24.7
39
56
6,221
131.2
AE_SI6
AMSR-E/Aqua Daily L3 6.25 km 89 GHz Brightness
Temperature (Tb) Polar Grids
NSIDC
5/12/2004
1,172
50.7
24
75
5,556
240.5
AE_5DSNO
AMSR-E/Aqua 5-Day L3 Global Snow Water
Equivalent EASE-Grids
NSIDC
5/12/2004
228
0.5
18
32
694
1.4
AE_MOSNO
AMSR-E/Aqua Monthly L3 Global Snow Water
Equivalent EASE-Grids
NSIDC
5/13/2004
39
0.1
12
18
256
0.5
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Number of Distinct Users for
AMSR-E Cryosphere L2,3 Products
High Archive
High Utilization
Low Archive
High Utilization
Low Archive
Low Utilization
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High Archive
Low Utilization
10
Comparison of Distributed vs. Archived Volume
for AMSR-E Cryosphere Products
Distributed
> 100% of
archive total
Distributed
< 100 % of
archive total
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Number of Orders for
AMSR-E Cryosphere Lx Products
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AMSR-E L3 Cryosphere
Product Profiles by FY
Granules Archived
Unique Users
800
40
600
30
400
20
200
10
0
Granules Distributed
10,000
8,000
6,000
4,000
2,000
0
0
FY00
FY01
FY02
FY03
FY04
FY05
FY00
FY01
FY02
FY03
FY04
FY05
FY01
FY02
FY03
FY04
FY05
AE_5DSNO
AE_DYSNO
AE_MOSNO
AE_5DSNO
AE_DYSNO
AE_MOSNO
AE_5DSNO
AE_DYSNO
AE_MOSNO
AE_SI12
AE_SI25
AE_SI6
AE_SI12
AE_SI25
AE_SI6
AE_SI12
AE_SI25
AE_SI6
Archive Volume (GB)
Unknown Users
40.00
30.00
20.00
10.00
0.00
Distribution Volume (GB)
4
3
2
1
0
FY00
FY00
FY01
FY02
FY03
FY04
600.0
400.0
200.0
0.0
FY05
FY00
FY01
FY02
FY03
FY04
FY05
FY00
FY01
FY02
FY03
FY04
FY05
AE_5DSNO
AE_DYSNO
AE_MOSNO
AE_5DSNO
AE_DYSNO
AE_MOSNO
AE_5DSNO
AE_DYSNO
AE_MOSNO
AE_SI12
AE_SI25
AE_SI6
AE_SI12
AE_SI25
AE_SI6
AE_SI12
AE_SI25
AE_SI6
Number of Orders
600
400
200
0
FY00
FY01
FY02
FY03
FY04
FY05
AE_5DSNO
AE_DYSNO
AE_MOSNO
AE_SI12
AE_SI25
AE_SI6
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AMSR-E L3 Cryosphere
Product Profiles by FY for Data Pool
# of Granules Distributed
Volume (GB) Distributed
4,000
3,000
2,000
1,000
0
150.0
100.0
50.0
0.0
FY03
FY04
FY05
FY03
FY04
FY05
AE_5DSNO
AE_DYSNO
AE_MOSNO
AE_5DSNO
AE_DYSNO
AE_MOSNO
AE_SI12
AE_SI25
AE_SI6
AE_SI12
AE_SI25
AE_SI6
Unique IP Addresses
60
40
20
0
FY03
FY04
FY05
AE_5DSNO
AE_DYSNO
AE_MOSNO
AE_SI12
AE_SI25
AE_SI6
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