The Sea of Azov subarea of the Black Sea LME - oceanographic database



The oceanographic database of the Sea of Azov subarea of the Black Sea LME contains 66 609 stations for the period of 1891 to 2012 (Figure 1).

Distribution of stations over the Sea of Azov area
Figure 1 - Distribution of stations over the Sea of Azov area(1891-2012 .)

The distribution of stations by years and months is presented in Figure 2.

Distribution of stations by months and years in the Sea of Azov database
Figure 2 - Distribution of stations by months (A) and years (B) in the Sea of Azov database (1891-2012)

Tables and charts of station distribution for every month of each year for the considered period are in Inventory and archive data section.

Compared to the Climatic Atlas of the Sea of Azov 2008 (Matishov et al., 2008) ), the database covers an additional 31 192 stations(Figure 3), which fills in the existing data gaps for the periods of 1960-1970, and 1980-1990.

Distribution of stations by years in the database of the Climatic Atlas of the Sea of Azov 2008
Figure 3 - Distribution of stations by years in the database of the Climatic Atlas of the Sea of Azov 2008 (Matishov et al., 2008) (1) and the increase of the number of stations in the present Atlas (2)

To analyze the long-term variability of hydrological characteristics of the Sea of Azov, two sections are considered:

  • Kerch Strait Don Delta (Figure 4)), which is a continuation of Samsun the Kerch Strait section;
  • Igorevka Kuban Delta (Figure 5).

Distribution of stations in the 40-km buffer zone and bottom relief along the Kerch Strait  Don Delta section
Figure 4 - Distribution of stations in the 40-km buffer zone (A) and bottom relief (B) along the Kerch Strait Don Delta section

Distribution of stations in the 40-km buffer zone and bottom relief along the Settlement of Igorevka  Kuban Delta section
Figure 5 - Distribution of stations in the 40-km buffer zone (A) and bottom relief (B) along the Settlement of Igorevka Kuban Delta section

A number of stations located in the belt of 20 km on both sides and used for the construction of climatic standards and anomalies is correlated with every section. The total number of stations for the Kerch StraitDon Delta is 27 615, and the Igorevka Kuban Delta covers 5 619 stations.

Maps of the vertical distributions of the climatic standarts and anomalies of temperature and salinity are given in section Time series of water temperature and salinity

The Sea of Azov database includes the following parameters (Table 1):

Table 1 - List of indices included in the Sea of Azov database
ParameterUnits of measurementNumber of measurements
NameCodeNameCode
TemperatureTEMPDegree Celsius231 174
PressurePRESSDecibarDBAR53 965
ConductivityCoNDSiemens/mSIEMENS/M52 604
SalinitySALUnits of practical scale of salinityPSS187 296
Chlorine levelsCLPer millePPT11 393
Absolute content of dissolved oxygenoXYMl/l, mg/lML/L, MG/L29 593
Relative content of dissolved oxygenoXY SATUR%PERCENT3 213
PH--12 458
AlkalinityALKMilligram-equivalent/lMEQ/L11 687
NitritesNo2Mg/l, mkg/lMG/L, UG/L691
NitratesNo3Micromole/l, mg/l, mkg/lUMoL/L, MG/L, UG/L1 866
AmmoniumNH4Mg/lMG/L54
Total content of nitrogenToTNMg/l, mkg/lMG/L, UG/L127
PhosphatesPo4Micromole/l, mg/l, mkg/lUMoL/L, MG/L, UG/L10 004
Total content of dissolved phosphorusPToTPMg/l, mkg/lMG/L, UG/L75
Total content of suspended phosphorusDToTPMg/l, mkg/lMG/L, UG/L76
Total content of phosphorusToTPMg/l, mkg/lMG/L, UG/L85
Content of dissolved organic carbonDoCMg/lMG/L115
Content of suspended organic carbonPoCMg/l, mkg/lMG/L, UG/L154
SilicatesSIo4Micromole/lUMoL/L4 639
Chlorophyll-CHL AMg/l, mkg/lMG/L, UG/L307
Total suspensionTSSMg/lMG/L219