ADEOS/OCTS Global Map Data Set (Ver. 3) GAC L3BM Monthly; Weekly; Daily and Data

ADEOS/OCTS Global Map Data Set (Ver. 4)
GAC L3BM Monthly; Weekly; Daily and Data
1996/11/01 ~ 1997/06/29
Chlorophyll-a

Introduction
This Advanced Earth Observing Satellite (ADEOS)
/ Ocean Color and Temperature Scanner (OCTS)
Global Map Data Set (Ver. 3) CD-ROM is made for
researchers of ocean science etc., by the Earth
Observation Research Center (EORC), National
Space Development Agency of Japan (JAXA).
The ADEOS was developed with the aim of
establishment of platform technology for future
earth observation spacecraft and its data will
contribute global observation of environmental
change to international community.
ADEOS/OCTS was a visible and infrared multi-
spectral radiometer which JAXA developed to
measure global ocean color and sea surface
temperature with high sensitivity. Global ocean
primary productivity and ocean current were
observed by this sensor.
The instrument scanned earth surface using a
rotating mirror in the direction perpendicular
to the satellite flight path. In order to avoid
sun glitter, it had a tilting mechanism.
The Major specification of OCTS was as follows.

Scanning Method ; Mechanical
Wavelength ; Visible 6 Bands
Near- infrared 2 Bands
Middle-infrared 1 Bands
Thermal-infrared 3 Bands
Special Resolution ; Approx. 680m at nadir

The ADEOS was launched by H-II rocket from
JAXA/Tanegashima Space Center, Japan on 17 August
1996 (JST), but ADEOS had stopped its function
on 30 June 1997 by malfunctions of the Solar
Array Paddle.
You can get more information about ADEOS and
OCTS from the JAXA/EORC's WWW server and its
address is http://www.eorc.jaxa.jp/ADEOS/

Data contents
This CD-ROM contains the Chlorophyll-a concentration
(chl-a) of the Global Area Coverage (GAC) image data
and binary data,the ADEOS / OCTS Level 3 Binned Map data
(Processed by Ver. 3 algorithm).

The GAC data include Monthly , Weekly and Daily products
and its Binary Data.
These data are observed during November 1996 to June 1997 by
OCTS on ADEOS.

OCTS Global Area Coverage (GAC) Data
Level 3 Binned Map (L3BM)
Monthly mosaic
Chlorophyll-a concentration (OCC)
November 1996 ~ June 1997
Processed by Version 3 algorithm

OCTS Global Area Coverage (GAC) Data
Level 3 Binned Map (L3BM)
Weekly mosaic
Chlorophyll-a concentration (OCC)
1996/11/01 ~ 1997/06/29
Processed by Version 3 algorithm

OCTS Global Area Coverage (GAC) Data
Level 3 Binned Map (L3BM)
Daily mosaic
Chlorophyll-a concentration (OCC)
1996/11/01 ~ 1997/06/29
Processed by Version 3 algorithm

Binary Data
Binary Data contains all of the original
of above data by binary and compressed
tar (UNIX) in each.

[Note 1]
The Global Area Coverage (GAC) data are
thinned to one-fifth of the original data volume
along both the pixel and line directions at the
time of input with special care being paid to
proper registration. The GAC data's resolution
is approximately 4km at the nadir. (L1A, L2)

[Note 2]
The Binned data are arranged in terms of
time and space. The bins are rectangular bins
placed parallel to the equator and are divided
along the longitude every one-twelfth of a
degree on the equator. At each latitude, the
number of bins is adjusted, so the area of each
bin is almost equal (approximately 9km by 9km).

[Note 3]
In regard to a Binned map, the Binned
data are placed on a global map projected with
equal latitude and longitude rectangles.

[Note 4]
The TIFF > GIF data were browsed
from the L3BM, L3M data to thin down the data
volume and allocate visible color to each pixel's
digital account for easy to handle and easy to
realize. So, the resolution of TIFF > GIF
data became such as one-eighth, one-sixteenth etc.
from L3BM, L3M data in each case.

How to use this CD-ROM
This CD-ROM requires no installation to your pc or
workstation. No software resides on this disk.
It functions equally well on PC (running Windows 3.1/95/NT/98)
Mac (PowerPC or non-powerPC), or Unix computers.
A World Wide Web (WWW) browser is recommended.
This CD-ROM's data are made into GIF and TIFF images.
This CD-ROM also contains documentation about the data,
as well as directives so that you can find the image
that you desire to see.

The documentation on this CD-ROM is written in
HTML. So, you should have a web browser to view
this documentation. You should better to use either
Netscape navigator version 3.0 or higher, or
Microsofts internet explorer version 4.0 or higher.
Both of these programs are available
at no cost at their web site :
(Netscape : http://home.netscape.com/ ;
Microsoft : http://www.microsoft.com/ )
The image data on this CD-ROM is in the Monthly, Weekly
and Daily folder of this disk. They may be
retrieved directly from the data folder as well
as through the HTML documentation.

Data Format

.tif : TIFF Browse Data
.gif : GIF Browse Data
.jpg : JPEG Browse Data
.tar : tar (UNIX) compressed Data

Naming Convention

TTTyymmddPCCVV.gif ,tif or jpg

TTT --- Data sub-Type

OCC : Ocean Color Chlorophyll a concentration
SST : Sea Surface Temperature

yymmdd --- Observation Start Date

yy : Year (lower 2 digits)
mm : Month
dd : Day

P --- Product Type

D : Daily
W : Weekly
M : Monthly

CC --- Data Code

DS : Dataset genarated by EORC

VV --- OCTS Algorithm Version

V3 : Version 3

Note:
If you can't open TTTyymmddPCCVV.TIF <000> file
on your PC by Photoshop(R) etc.,
please recognize TTTyymmddPCCVV.000 file
as .tif file. It was caused by automatically
shorten long file name to PC's limitation.

AByymmddDDDDDDC.tar.Z

A --- Data Type

G : GAC

B --- Data sub-Type

O : OCC
S : SST

yymmdd --- Observation Start Date

yy : Year (lower 2 digits)
mm : Month
dd : Day

DDDDDD --- Dummy

C --- Product Type

d : Daily
w : Weekly
m : Monthly

How To View The Retrieved Data
You will get the tar archived data by the operations above.
Before viewing the data, You have to de-compress and extract
tar file again.
yourprompt% uncompress tar.Z-file-name
yourprompt% tar xvf tar-file-name

Now you can take a look at the data.
When you want to view the row data, you have to use the application
that allows you to input the columns and lines of the data you want
to view.(ex. PCIWORKS, IMAGINE, ...)
On GAC 3BM, 4096 as the columns and 2048 as the lines.

Copyright
Images Copyright (c) 1996, 1997 JAXA, data receive and
processing by JAXA/EOC, data set composed and
CD-ROM made by JAXA/EORC.
If you wish to publish these images for
scientific or educational purposes, no permission
is required and there is no charge. Please
acknowledge the origin of the data by adding
"(c) JAXA " below any image published.
The data, images and text contained within this
CD-ROM are only intended for scientific and/or
educational use. Any other use is prohibited under
the terms of the JAXA copyright.
More information may be found at the JAXA/EORC's
web site ; http://www.eorc.jaxa.jp/

Contact Information
Earth Observation Research and application Center (EORC)
Office of Earth Observation Systems
Japan Space Exploration Agency (JAXA)
Address : Earth Observation Research and application Center

(EORC), JAXA
Harumi Island Triton Square Office Tower X 23F
1-8-10 Harumi, Chuo-ku, Tokyo 104-6023 Japan

Phone : +81-3-6221-9090
Fax : +91-3-6221-9191
E-mail : adeosdata@eorc.jaxa.jp

Earth Observation Research and application Center

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