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Short Citation:
National Centers for Coastal Ocean Science, 2022: EmpiricalValues_Chlorophyll_GrandComposite, https://www.fisheries.noaa.gov/inport/item/39293.

Item Identification

Title: EmpiricalValues_Chlorophyll_GrandComposite
Short Name: empiricalvalue_chloro_grand
Status: Completed
Publication Date: 2006-05
Abstract:

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.

Purpose:

These data were obtained and reprocessed to support the biogeographic assessment of Stellwagen Bank National Marine Sanctuary.

Notes:

640

Supplemental Information:

Cloud Cover - Variable

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Category 014
ISO 19115 Topic Category oceans
NOS Data Explorer Topic Category Environmental Monitoring
None Chlorophyll
None Ocean Color
None Seasonal averages
None SeaWiFS

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 1997-2005

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None Gulf of Maine
None Stellwagen Bank

Physical Location

Organization: National Centers for Coastal Ocean Science
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: remote-sensing image
Distribution Liability:

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.

Data Set Credit: 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/

Support Roles

Data Steward

CC ID: 464762
Date Effective From: 2006-05
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Distributor

CC ID: 464764
Date Effective From: 2006-05
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Metadata Contact

CC ID: 464765
Date Effective From: 2006-05
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Point of Contact

CC ID: 464763
Date Effective From: 2006-05
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Principal Investigator

CC ID: 464766
Date Effective From: 2006-05
Date Effective To:
Contact (Person): Costa, Bryan
Email Address: bryan.costa@noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 464769
W° Bound: -72.195988
E° Bound: -65.013835
N° Bound: 45.46229
S° Bound: 39.482066

Extent Group 1 / Time Frame 1

CC ID: 464768
Time Frame Type: Range
Start: 1997
End: 2005

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Access Information

Security Class: Unclassified
Data Access Procedure:

Please contact the Stellwagen Banks NMS Research Coordinator for additional information on data access (david.wiley@noaa.gov);

Data Access Constraints:

None.

Data Use Constraints:

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.

URLs

URL 1

CC ID: 464760
URL: http://ccma.nos.noaa.gov/ecosystems/sanctuaries/stellwagen_nms/
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 464781
Activity Date/Time: 2013-01-18
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 464780
Activity Date/Time: 2017-04-05
Description:

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.

Activity Log 3

CC ID: 584361
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Technical Environment

Description:

ArcGIS

Data Quality

Completeness Report:

Please refer to the remote sensing data for visualization's metadata.

Conceptual Consistency:

Please refer to the remote sensing data for visualization's metadata.

Lineage

Process Steps

Process Step 1

CC ID: 464757
Description:

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.

Process Date/Time: 2005-01-01 00:00:00

Process Step 2

CC ID: 464758
Description:

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.

Process Date/Time: 2006-05-01 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity EmpiricalValues_Chlorophyll_GrandComposite

Catalog Details

Catalog Item ID: 39293
GUID: gov.noaa.nmfs.inport:39293
Metadata Record Created By: Tyler Christensen
Metadata Record Created: 2017-04-05 12:51+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2017-09-13
Owner Org: NCCOS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2017-09-13
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2018-09-13