Seasonal Variability of the Black Sea Chlorophyll-a Concentration

Abstract

The optimal spectral decomposition (OSD) method is used to reconstruct seasonal variability of the Black Sea horizontally averaged chlorophyll-a concentration from data collected during the NATO SfP-971818 Black Sea Project in 1980-1995. During the reconstruction, quality control is conducted to reduce errors caused by measurement accuracy, sampling strategy, and irregular data distribution in space and time. A bi-modal structure with winter/spring (February-March) and fall (September-October) blooms is uniquely detected and accurately documented. The chlorophyll-a enriched zone rises to 15 m depth in winter and June and deepens to 40 m in April and 35 m in August. The June rise of the chlorophyll-a enriched zone is accompanying by near-continuous reduction of upper layer maximum chlorophyll-a concentration.

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Document Details

Document Type
Technical Report
Publication Date
Mar 04, 2005
Accession Number
ADA575163

Entities

People

  • Leonid M. Ivanov
  • Peter Cheng Chu
  • Tatyana M. Margolina

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Black Sea
  • Chemistry
  • Chlorophylls
  • Data Analysis
  • Data Sets
  • Decomposition
  • Marine Biology
  • Measurement
  • Oceanography
  • Oceans
  • Quality Control
  • Sampling
  • Sea Water
  • Temperature Gradients
  • Topography
  • Two Dimensional

Fields of Study

  • Environmental science

Readers

  • Atmospheric Science/Meteorology
  • Oceanography.

Technology Areas

  • Space