NOTICE -- The LBA-ECO Project website is no longer being supported.  This archive is a snapshot, as it existed in 2013, of the LBA-ECO website, maintained by NASA Goddard Space Flight Center, and now archived at the ORNL DAAC.  Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC.
banner
banner banner banner banner banner banner
banner banner banner banner banner banner banner
home aboutlibrarynews archivecontacts banner

spacer
banner
Investigations
Overview
Abstracts & Profiles
Publications
Research Sites
Meetings
Synthesis Groups
LBA-HYDROMET
LBA-Air-ECO
Logistics
Overview
Field Support
Travel
Visa
Shipping
Data
  Overview
Find LBA Data
Investigator Checklist
Process & Policy
Documentation & Archive
Training & Education
  Overview
Activities Summary
T&E Goals
Student Opportunities
  Folha Amazônica
 
spacer

Investigation:

CD-07 (Smith / Cooper / Dias)

LBA Dataset ID:

lba_l1_200605

Originator(s):

1. GU, J.J.
2. SMITH, E.A.
      3. COOPER, H.J.

Point(s) of Contact:

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Dataset Abstract:

The LBA-ECO CD-07 team collected GOES-8 imager data over the LBA-ECO study region as part of our effort to characterize the incoming radiation and precipitation rates at regional scales. This data set contains data from all five imager channels at half-hourly or 3-hourly temporal resolution and full spatial resolutions. The data cover the time period of March 1998 to February 2001. Five wavelength regions of radiation data from the visible to the infrared are available at half hourly to 3 hourly intervals daily from Mar 1998 to February 2001 for the area known as Amazonia, geographically from about 5 N latitude to -16 S latitude in South America. This is the Amazon watershed area primarily. The data was collected by the University of Florida team under LBA contract CD-07, was being distributed as swath data by the University of New Hampshire through the Earth Science Information Partners program; and is now distributed via the Oak Ridge National Laboratory\'s Distributed Active Archive Center (ORNL DAAC\'s) ftp site.

Beginning Date:

1998-03-01

Ending Date:

2001-02-28

Metadata Last Updated on:

2006-05-15

Data Status:

Archived

Access Constraints:

PUBLIC

Data Center URL:

http://daac.ornl.gov/

Distribution Contact(s):

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Access Instructions:

PUBLIC

Data Access:

IMPORTANT: The LBA-ECO Project website is no longer being supported. Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC. Please follow the fair use guidelines found in the dataset documentation when using or citing LBA data.
Datafile(s):

LBA-ECO CD-07 GOES-8 L1 Radiance Data for Amazonia: 1998-2001:  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=833

Documentation/Other Supporting Documents:

LBA-ECO CD-07 GOES-8 L1 Radiance Data for Amazonia: 1998-2001:  http://daac.ornl.gov/LBA/guides/CD07_GOES_L1_Radiance.html

Citation Information - Other Details:

Gu J. J., E. A. Smith, and H. J. Cooper. 2006. LBA-ECO CD-07 GOES-8 L1 Radiance Data for Amazonia: 1998-2001. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/833

Keywords - Theme:

Parameter Topic Term Source Sensor
REFLECTANCE ATMOSPHERE ATMOSPHERIC RADIATION GOES-8 GOES-8 IMAGER
REFLECTED INFRARED SPECTRAL/ENGINEERING INFRARED WAVELENGTHS GOES-8 GOES-8 SOUNDER
VISIBLE RADIANCE SPECTRAL/ENGINEERING VISIBLE WAVELENGTHS GOES-8 GOES-8 IMAGER

Uncontrolled Theme Keyword(s):  AMAZONIA, GOES, LBA, PRECIPITATION, RADIATION, RAINFOREST, REMOTE SENSING

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
  AMAZONIA 5.10000 -16.10000 -37.90000 -75.30000

Related Publication(s):

Gu, J.J., E.A. Smith, H.J. Cooper, A. Grose, G.S. Liu, J.D. Merritt, M.J. Waterloo, A.C. de Araujo, A.D. Nobre, A.O. Manzi, J. Marengo, P.J. de Oliveira, C. von Randow, J. Norman, and P.S. Dias. 2004. Modeling carbon sequestration over the large-scale Amazon basin, aided by satellite observations. Part I: Wet- and dry-season surface radiation budget flux and precipitation variability based on GOES retrievals. Journal of Applied Meteorology 43(6):870-886.

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

<pre>

Spatial Coverage:

01-Mar-1998 to 16-Jun-1998 16-June-1998 to 28-Feb-2001

Latitude Longitude Latitude Longitude

---------- ----------- ---------- -----------

Northwest 5 N 75 W 5 N 75 W

Northeast 5 N 40 W 5 N 40 W

Southwest 15 S 75 W 16 S 75 W

Southeast 15 S 40 W 16 S 40 W




Spatial Coverage Map:

Not available at this time.




Spatial Resolution:

Channel 1: 1 km

Channel 2: 4 km

Channel 3: 8 km

Channel 4: 4 km

Channel 5: 4 km




Projection:

GOES perfect.




Grid Description:

Not available at this revision.




Temporal Characteristics:



Temporal Coverage:

The dataset provides covers the period of Mar. 1998 to Feb. 2001.




Temporal Resolution:

The temporal resolution was 30 min. for Mar., Apr., Sep., and Oct., and was 3 hourly for the other months from Mar. 1998




Data Format(s):

The raw GOES-8 imager data set consisted of five bands, with the size of the images changing over the time. The following table describes the dates and sizes; the details of the formats are given in the text contained from here through Section 8.2.4.



Start Time End Time Band of Bits of Lines of Pixels

----------- ---------- -------- ------- -------- ---------

01-Mar-1998 16-Jun-1998 visible 8 2192 6200

00:45 GMT 17:15 GMT IR2 8 548 1550

IR3 8 274 1550

IR4 8 548 1550

IR5 8 548 1550

02-May-1996 21-Oct-1996 visible 8 2296 6200

17:45 GMT 23:45 GM IR2 8 574 1550

IR3 8 287 1550

IR4 8 574 1550

IR5 8 574 1550




A file of raw GOES-8 imagery contains a header record followed by visible, IR2, IR3, IR4, or IR5 data. The easiest way to distinguish between the file types is by the file name extension. Another way is through the size of the file. The information contained in bytes 1 to 4 of the header record should also contain the channel number information (see details below). However, because of an error in the FSU software, the channel number field in the header record for IR2, IR4, and IR5 images is the same. Therefore, the only way to distinguish channel 2, 4, 5 images is through the file name extension.




The multiple-byte numeric integer fields in the header are stored as low-order byte first. The decimal number fields are Institute of Electrical and

Electronics Engineers (IEEE) 4-byte floating point values. The format and contents of the header record is:



Bytes Description

------- --------------------------------------------------

1 - 4 Band number (32-bit integer; low-order byte first)

(0 == visible; 1 == IR2; 2 == IR3, 1 == IR4; 1 == IR5)

(Note that because of an error in the FSU software, the band number

field for IR2, IR4, and IR5 are the same. Based on this and the fact

that the files are the same physical size, they cannot be

distinguished on tape. BORIS staff was able to distinguish the files

by reading the contents of a file sent by FSU that listed the files

by type.)

5 - 8 Number of Pixels (32-bit integer; low-order byte first).

9 - 12 Number of Lines (32-bit integer; low-order byte first).

13 - 16 Decimal latitude of the center of the image in decimal degrees

17 - 20 Decimal longitude of the center of the image in decimal degrees.

21 - 132 Contents are unknown at this time.

133 - 140 Portions of the date and time as shown below.

141 - 8150 Contents are unknown at this time.

</pre>

Data Application and Derivation:

The GOES-8 images provide a high temporal resolution data set that would be useful for monitoring radiation loading and cloud development and movement over the LBA region.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

Data Validation by Source:




Whatever the processing level, the geometric quality of the image depends on the accuracy of the viewing geometry.




Spectral errors could arise from image-wide signal-to-noise ratio, saturation, cross-talk, spikes, or response normalization caused by a change in gain.





Confidence Level/Accuracy Judgment:


Not given.





Measurement Error for Parameters:


Not given.





Additional Quality Assessments:


None given.

Process Description:

Data Acquisition Materials and Methods:

The SRB and precipitation data were created from raw GOES-8 imager data. The

Imager data was obtained by Dr. Eric Smith at FSU using the FSU Direct Readout Ground System located in Tallahassee, FL.

References:

Menzel, W. P., and J. F. W. Purdom, 1994: Introducing GOES-I: The first of a new generation of geostationary operational environmental satellite. Bull. Amer. Meteor. Soc., 75, 757-781.




Kelly, K.A. 1989: GOES I-M image navigation and registration and user Earth

location. GOES I-M Operational Satellite Conf., Arlington, VA, US. Department of

Commerce, NOAA, 154-167.




Rossow, W.B., C.L. Brest, and M. Roiter, 1996: International Satellite Cloud

Climatology Project (ISCCP) New Radiance Calibrations. WMO/TD-No. 736. World

Meteorological Organization.




Rossow, W.B., C.L. Brest, and M.D. Roiter, 1995: International Satellite Cloud

Climatology Project (ISCCP): Update of radiance calibration report. Technical

Document, World Climate Research Programme (ICSU and WMO), Geneva, Switzerland,

76 pp.




Weinreb, M., M. Jamieson, N. Fulton, Y. Chen, J.X. Johnson, C. Smith, J. Bremer, and J. Baucom, 1997: Operational Calibration of the Imagers and Sounders on the GOES-8 and -9 Satellites. NOAA Technical Memorandum NESDIS 44.

Skip navigation linksHOME | ABOUT | LIBRARY | NEWS ARCHIVE | CONTACTS | INVESTIGATIONS | LOGISTICS | DATA |TRAINING & EDUCATION

NASA logo
ORNL DAAC
Get Acrobat Reader