Environmental Reporting, Ministry for the Environment and Statistics New Zealand
Position Name
Analyst
Contact Info
Contact
Address
Address
Delivery Point
23 Kate Sheppard Place, PO Box 10362
City
Wellington 6143
Country
New Zealand
Electronic Mail Address
Environmental.Reporting@mfe.govt.nz
Role
Role Code
distributor
Date Stamp
Date
2016-01-28
Metadata Standard Name
ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata
Metadata Standard Version
1.1
Reference System Info
Reference System
Reference System Identifier
Identifier
Code
2193
Identification Info
Data Identification
Citation
Citation
Title
Long-term average chlorophyll-a concentration, 1997–2014
Date
Abstract
The average concentration of chlorophyll-a (chl-a) in phytoplankton over the period 1997–2014. Concentrations of chl-a in phytoplankton are used to assess primary productivity in our oceans. Phytoplankton are primary producers of biomass and form the basis of the oceans’ food chains.
Status
Progress Code
completed
Point Of Contact
Responsible Party
Organisation Name
Environmental Reporting, Ministry for the Environment and Statistics New Zealand
Source: National Institute of Water and Atmospheric Research
Method: Data are based on measurements from two satellite ocean colour sensors: SeaWiFS and MODIS-Aqua. Chlorophyll-a average concentrations are given in mg/m3. Data for the territorial sea are not shown.
The time series is derived by combining measurements from two satellite ocean colour sensors (SeaWiFS and MODIS-Aqua). The satellite data covered the whole New Zealand region at 9km spatial resolution for the period September 1997 to December 2014. The merged data series between April 2002 and April 2012 was validated using data from a third satellite sensor (MERIS3).
The accuracy of the data source is of high quality.
Note that data from sub-Antarctic waters may be less accurate due to missing observations during the winter period due high cloud cover during winter.
Metadata Constraints
Legal Constraints
Use Limitation
Creative Commons Attribution 3.0 New Zealand by Ministry for the Environment
Access Constraints
Restriction Code
license
Metadata Constraints
Legal Constraints
Use Limitation
Creative Commons Attribution 3.0 New Zealand by Ministry for the Environment