Click Here To Download Data as                 Publish Date, 25/06/2025 XLSX                                                                                                                                                                                  

Percent of Annual Chlorophyll-a Anomalies in Palestine by Severity Level (2018–2022)
Year Moderate High Extreme
2018 7.36 5.9 0.71
2019 8.17 8.24 1.63
2020 7.42 9.07 1.47
2021 7.64 9.45 2.55
2022 7.9 8.41 2.05
Source: Palestinian Central Bureau of Statistics (PCBS), 2025. Emissions Database, based on estimations from the State of the Environment Report in the State of Palestine, 2023, issued by the Palestinian Environment Quality Authority, 2024, and United Nations Environment Programme (UNEP)
Definition: Chlorophyll-a anomalies refer to the variations or deviations in chlorophyll-a concentration from a long-term average or baseline condition at a given time and location. These anomalies can be positive or negative: used to detect anomalies in phytoplankton biomass or water quality conditions.