Development of TerraAqua MODIS preprocessing system at the University of Tokyo direct broadcasting s

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Development of Terra/Aqua MODIS pre-processing
system at the University of Tokyo direct
broadcasting system

• Takeuchi, W., Nemoto, T., Baruah, P. J., and
  Yasuoka, Y.

Institute of Industrial Science University of
Tokyo, Japan
wataru_at_iis.u-tokyo.ac.jp
EOS/NPP direct broadcast meetingOct. 3-6, 2005 _at_
Benevento, Italy
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ADEOS-II GLI Asia mosaic
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To meet the needs of users

• IIS and AIT have been receiving NOAA AVHRR and
  Aqua/Terra MODIS data at the direct receiving
  station.
• Over 20 years of record is archived in data
  storage system.
• Network based (WWW or FTP) data distribution is
  in process.

MODIS antenna in Tokyo
Contribute to data utility promotion(especially
for Asian countries)!!
MODIS antenna in Bangkok
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Spatial coverage of MODIS and AVHRR
IIS, TokyoSince May 2001
AIT, BangkokSince May 2001
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Data transfer from Thai to Japan
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From data receiving to data distribution

• Data receiving
• NOAA AVHRR
• Aqua/Terra MODIS
• Dundee/England system
• Data processing
• Radiometric / geometric correction, Quicklook
  image, cloud-free compositing
• Data archive
• Huge data storage system on tape archiving
  (-600TB)
• Data distribution
• Network-based (FTP and WWW) download

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Computer facilities at IIS
Air-conditioned server room
Antenna control machines
Linux (6) Xserve(6) RAID (20TB) Solaris (1)

• MODIS and AVHRR data processing, archiving and
  distributing

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Online data distribution service
WebMODIS (Aqua/Terra MODIS)
WebPaNDA (NOAA AVHRR)
Online subsetting scene by scene
Online subsetting scene by scene
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Rapid response by quicklook
Rapid response by quicklook
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2
10 day cloud-free composite
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10 day cloud-free composite
3
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MODIS processing system on WWW
? Data search with mouth click ? Radio. / geo.
Correc., spatial subset ? FTP download
instruction via e-mail
2,100 scenes have been processed in 3 years
WebMODIS website http//webmodis.iis.u-tokyo.ac.jp
/
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AVHRR processing system on WWW
? Data search with mouth click ? Radio. / geo.
Correc., spatial subset ? FTP download
instruction via e-mail
12,500 scenes have been processed in 3 years
WebPaNDA website http//webpanda.iis.u-tokyo.ac.jp
/
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Hardware system structure

• Input mapping parameters by anonymous users
• Pre-processing of MODIS data
• Deliver data via the FTP

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How you can get data

• Step A Input parameters on WWW 5 min.

Step B Retrieve data from database 5 min.

Step C Data processing and subset 10 min.

Step D FTP instructions via e-mail 20 min.

• Data ordering is easy Just mouse click and enter
• All the data are freely downloaded quickly

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Web system design
Resolution selection 250m, 500m, 1000m
Definition of endmembers based on triangle
estimation including 95 of convex hull.
http//webmodis.iis.u-tokyo.ac.jp/
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Web system design (cont.)
1) Specify raw data
2) Mapping area selection
3) E-mail address
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Hierarchical data search
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Web system design (cont.)

• No waiting time for the server response
• Easy to use GUI using just mouse click
• PHP scripts runs as background faster than CGI

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Notification via e-mail

• Users are notified how to download MODIS product
  from FTP via e-mail

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Notification via e-mail

• Users are notified how to download MODIS product
  from FTP via e-mail

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Download MODIS product via FTP
Geo-coded MODIS image (200302010120 Terra)
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Processed data list (QKM)
(HDF, 32-bit float )
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Processed data list (HKM)
(HDF, 32-bit float )
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Processed data list (1KM)
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Processed data list (cont.)
(HDF, 32-bit float )
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Hardware and software

• It is developed as a packaged software,
  completely freely available, and is already
  installed at IIS, AIT, GISTDA.

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Online data distribution service
WebMODIS (Aqua/Terra MODIS)
WebPaNDA (NOAA AVHRR)
Online subsetting scene by scene
Online subsetting scene by scene
1
1
Rapid response by quicklook
Rapid response by quicklook
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2
10 day cloud-free composite
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10 day cloud-free composite
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L1B quicklook image of MODIS and AVHRR
Terra / Aqua MODIS http//webmodis.iis.u-tokyo.ac.
jp/
NOAA / AVHRR http//webpanda.iis.u-tokyo.ac.jp/
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Level2 products - sea surface temperature
ATBD MOD28, 1999
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Level2 products - precipitable water vapor
ATBD MOD05, 1998
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Level2 products - active fire mapping
Active fire pixels on 2005/07/02
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(No Transcript)
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Sea ice monitoring in Ohotsuku sea
RGB621 Middle-infrared channel (1.6µm) is
effective to identify sea and land ice from
clouds.
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Yellow dust monitoring
Yellow dust in China
Fly over Japan
2002/11/11 1427 (JST)
2002/11/12 1415 (JST)
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Tsunami tragedy from MODIS QKM
10km
2002 Dec. 8th 410 (UTC)
2004 Dec. 26th 335 (UTC)

• Turbid water along the coastal line just after
  the tsunami occurrence

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AVHRRfalsecolor(RGB121)
10 day composite Dec. 20 -31, 2001 NTMinS
criteria 1km resolution
Mekong delta zoom
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MODISfalsecolor(RGB621)
10 day composite Dec. 20 -31, 2001 Min. blue
criteria 500m resolution Remarkable view
Mekong delta zoom
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(No Transcript)
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Online data distribution service
WebMODIS (Aqua/Terra MODIS)
WebPaNDA (NOAA AVHRR)
Online subsetting scene by scene
Online subseting scene by scene
1
1
Rapid response by quicklook
Rapid response by quicklook
2
2
10 day cloud-free composite
3
10 day cloud-free composite
3
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Online data list in detail
1
2
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4
4
3
2
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50N120E-20N150E
80N50E-20S170E
50N124E-30N146E
40N70E-10S130E
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Compositing algorithm

• AVHRR - NDVI and thermal criteria followed by
  minimum scan angle method (NTMinS) Lei, 2001
• NDVI of cloud is lower than normal pixel.
• Thermal value of cloud is cooler than normal
  pixel.
• The smaller scan angle is, the better the spatial
  resolution is.
• ReferenceLei, L., and Yokoyama, R., 2001.
  Development of AVHRR 10-day composite over the
  whole Asia (in Japanese with English abstract).
  J. Remote Sens. Soc. Japan, 21(2), 168-178.
• MODIS - Thermal criteria followed by minimum blue
  method (TMinB) Takeuchi, 2004
• Blue channel is subject to atmospheric effects.
• Cloud shadow is cooler than fine pixel.
• Not only vegetation but also water area are
  better represented.
• Reference Takeuchi, W., and Yasuoka, Y., 2004.
  Development of compositing algorithms for MODIS
  data (in Japanese with English abstract). J.
  Japan Photogramm. Remote Sens., 22-32, 42(4).

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NOAA AVHRR cloud-free composite
East Asia
Southeast Asia
Whole Asia
Ref. / B. T. (Ch.1-5)
NDVI
SST
19832005
19972005
19981999
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Aqua/Terra MODIS cloud-free composite
East Asia
Southeast Asia
Ref. /B. T. (Ch.1-7,31,32)
NDVI, NDSI, NDWI
LST, SST
20012005
20012005
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MODIS EAST ASIA MOSAICS
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MODIS SE/S-ASIA MOSAICS
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Online FAQ for Japanese users
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MODIS Sample Data CDROM
Received _at_ IIS, U-Tokyo Oct. 15th, 2001 A.M.
1100(JST)

• 250m - Ch.1-2
• 500m - Ch.1-7
• 1000m - Ch.1-36

Freely available via the Internet ftp//yasulab.ii
s.u-tokyo.ac.jp/
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Usage statistcs of WWW
Access counts got 5-times after quicklook system
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Usage statistics in detail

• 60 of users are from university or national
  institutes.
• 30 of access are from outside of Japan and most
  of them are from Asian Asian countries.
• Some heavy users request us to provide a long
  time series of data ( 1 year)

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Concluding remarks

• Online processing and distribution of AVHRR and
  MODIS data is developed.
• Data distribution via WWW or FTP is developed at
  considerably low cost to make the use of open
  source software.
• Quicklook image will be expected to work as a
  rapid monitoring system.
• Local data distributor should live up to the
  needs or expectations of local data users.

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Appendix useful online data

• DAAC NASA GSFC (MODIS data)
• http//daac.gsfc.nasa.gov
• Aqua / Terra MODIS processing system on WWW
• http//webmodis.iis.u-tokyo.ac.jp/
• NOAA/AVHRR processing system on
  WWWhttp//webpanda.iis.u-tokyo.ac.jp/
• MODIS cloud-free composite imageryftp//webmodis.
  iis.u-tokyo.ac.jp/
• AVHRR cloud-free composite imageryftp//webpanda.
  iis.u-tokyo.ac.jp/

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Thank you for attention!!

• Photo at Phitsanulok (2004 Feb.)