SeaDataNet JRA6 Black Sea Products

Black Sea Products
Analysis of selected chemical parameters with DIVA software Description. Silicate. Phosphate. Nitrate and Nitrite. Ammonia.
Description

Description

Analysis of selected chemical parameters with DIVA software for Black Sea

Parameters

Parameter Unit depth layers (m)
Silicate (Si) uM 0, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500
Phosphate (PO4) uM 0, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500
Ammonia (NH4) uM 0, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500
Nitrate and Nitrite (NO3-NO2) uM 0, 50, 100, 150, 200, 250, 300, 350, 400, 450, 500

Data Source

Black Sea inter-disciplinary multivariable historical database was created in framework of the NATO TU-Black Sea project in 1994-1997 and is maintained in framework of the NATO SfP ODBMS Black Sea Projects. It includes all main physical, chemical and biological variables for the entire Black Sea basin and serves as a base line for contemporary and future research activities and management purposes in the region.
The DBMS was drastically updated within the NATO Science for Peace ODBMS Black Sea project in 1999-2002 including also creation of the Internet version of the database (http://sfp1.ims.metu.edu.tr/).

The initial database released after NATO TU Black Sea and NATO SfP ODBMS Black Sea Projects, is extended with 812 datasets and includes the quality controlled data for 148 variables from 1,117 data sets, including 14,147,397 data values for 74,532 oceanographic stations.

Black Sea Oceanographic Database includes ODBMS database, Data of recent R/V "Akvanavt" expeditions, The last R/V “Knor” Black Sea cruises, Medar/Medatlas-II project database.

Chemical dataset that are used to produce these climatic maps includes information for period from 1955 to 2003. The number of data for different years varies from hundreds to tens thousand. More than 80% of total amount falls at the period from 1985 to 1995. It is clear from the following figure that the ratio of amount of the data contributed by individual countries varies for different years. Thus, Romania has supplied up to 90% of data for period from 1960 to 1985. At the same time, Ukraine and Turkey have contributed more than 70% of data for period from 1985 to 1995 and 54% of total number of data.

Mapping methods

The climatic maps for the selected chemical data were produced using ODV 4.3 (Ocean Data View) software. Ocean Data View (ODV) is a software package for the interactive exploration, analysis and visualization of oceanographic and other geo-referenced profile or sequence data. ODV development is supported under EU FP6 project SeaDataNet.

ODV can display original data points or gridded fields based on the original data. Gridded fields can be color-shaded and/or contoured.

The grids for the climatic maps were calculated using  DIVA gridding software gridding algorithm that is integrated in ODV software. Maps were exported to gif files.

Data

Nutrient data to produce the climatic maps are ready to download in ODV format.