39293
EmpiricalValues_Chlorophyll_GrandComposite
empiricalvalue_chloro_grand
Data Set
Published / External
37202
SBNMS_Assess_Remote_Sensing
Project
Completed
2006-05
This personal geodatabase contains raster images of chlorophyll concentrations in the Gulf of Maine. These raster images are a composite of several years (1997-2005) binned by season or by month, and were calculated as means or as medians. For those images binned by month, all of the months for the time series were averaged together to make one mean image. For example, Jan '98, Jan '99, Jan 00, Jan 01, Jan 02, Jan 03, Jan 04 = Grand Monthly Mean for January. For those images binned by season, the seasons were defined as the following: 1) Fall= September, October, November; 2) Winter= December, January, February; 3) Spring= March, April, May; 4) Summer= June, July, August. All chlorophyll geotifs binned by year and season were then averaged again to create a grand mean for each season. For example, spring '98, spring '99, spring 00, spring 01, spring 02, spring 03, spring 04 = Grand Seasonal Mean for Spring. These images were also reprocessed to remove land and no data values (value = 252 and value = 0, 253, 251 respectively), as well as to calculate the real world values for chlorophyll in micrograms per liter.
These data were obtained and reprocessed to support the biogeographic assessment of Stellwagen Bank National Marine Sanctuary.
640
Cloud Cover - Variable
Theme
ISO 19115 Topic Category
oceans
Theme
NOS Data Explorer Topic Category
Environmental Monitoring
Theme
Chlorophyll
Theme
Ocean Color
Theme
SeaWiFS
Theme
Seasonal averages
Temporal
1997-2005
Spatial
Gulf of Maine
Spatial
Stellwagen Bank
National Centers for Coastal Ocean Science
Silver Spring
MD
Data Set
None Planned
remote-sensing image
These data were prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data have been used by NOAA, no warranty, expressed or implied, is made by NOAA as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by NOAA in the use of these data or related materials.NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA can not assume liability for and damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Centers for Coastal Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment (CCMA), Biogeography Program:http://ccma.nos.noaa.gov/about/biogeography/ and NOAA/NOS/NCCOS/CCMA/Coastal and Oceanographic Assessment, Status and Trends Team: http://ccma.nos.noaa.gov/about/coast/
41271
EmpiricalValues_Chlorophyll_GrandComposite
EmpiricalValues_Chlorophyll_GrandComposite
Published / External
Completed
Grand chlorophyll concentrations (micrograms/liter) in Gulf of Maine | Description Source: NOAA
Converted from FGDC using 'fgdc_to_inport_xml_entity.pl' script.
Data Steward
2006-05
Position
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
Distributor
2006-05
Position
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
Metadata Contact
2006-05
Position
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
Point of Contact
2006-05
Position
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov
Principal Investigator
2006-05
Person
Costa, Bryan
bryan.costa@noaa.gov
Ground Condition
-72.195988
-65.013835
45.46229
39.482066
Range
1997
2005
Yes
Unclassified
Please contact the Stellwagen Banks NMS Research Coordinator for additional information on data access (david.wiley@noaa.gov);
None.
None. Acknowledgement of the National Oceanic and Atmospheric Administration, Center for Coastal Monitoring and Assessment's Biogeography Program and Coastal and Oceanographic Assessment Status and Trends Team would be appreciated in products derived from these data.
http://ccma.nos.noaa.gov/ecosystems/sanctuaries/stellwagen_nms/
Online Resource
2013-01-18
Date that the source FGDC record was last modified.
2017-04-05
Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.
2017-09-13
Partial upload of Spatial Info section only.
ArcGIS
Please refer to the remote sensing data for visualization's metadata.
Please refer to the remote sensing data for visualization's metadata.
1
CREATING REMOTELY SENSED IMAGES:An EASI program was run on the previously created grand monthly chlorophyll geotifs of the SeaWiFS northeast region to create geotifs for the specified region of the Gulf of Maine. The new geotifs were also reprojected from their original SIN E019 projection to Albers Conical Equal Area, GCS NAD 83. These images are scaled down from 16 bit data to 8 bit data. These images were created using the following months: Winter= December, January, February Fall= September, October, November Spring= March, April, May Summer= June, July, August. These seasonal average chlorophyll geotifs were used to make grand seasonal Mean images, which consist of the average of all Mean images for each season in the time series.(ex: spring '98, spring '99, spring 00, spring 01, spring 02, spring 03, spring 04 = SW1998200401_GrdSSN_AvgCHL.tif). The new geotifs were reprojected from their original SIN E019 projection to Albers Conic Equal Area,NAD 83, GRS 80. These images are scaled down from 16 bit data to 8 bit data.
2005-01-01T00:00:00
2
REPROCESS REMOTELY SENSED IMAGERY:These remotely sensed images were reprocessed to remove land and no-data values as well as to calculate the real world values for chlorophyll. To do so, a script was written in VB 6.0 and run as a macro in ArcGIS 9.1, which reclassed the land (8 bit value = 252) and no-data values (8 bit value = 0, 253 and 251) as no data. A second macro also written in VB 6.0 calculated the real world value of chlorophyll (in micrograms per liter) using the following algorithm:CHL = 10^(((8bit # -1)*(3/250))-1.3) The resulting ERDAS Imagine files were subsequently imported into personal geodatabases.
2006-05-01T00:00:00
41271
Entity
EmpiricalValues_Chlorophyll_GrandComposite
gov.noaa.nmfs.inport:39293
Tyler Christensen
2017-04-05T12:51:44
SysAdmin InPortAdmin
2023-05-30T18:10:24
2017-09-13
National Centers for Coastal Ocean Science
NCCOS
1002
Public
No
2017-09-13
1 Year
2018-09-13