Chlorophyll-a deviations, remote sensing (%) by country
Countries reporting
213
Highest
20.6%
Trinidad and Tobago
Lowest
0.0%
Christmas Island
Median
1.5%
Years covered
18
2005–2022
Data points
4,325
What the numbers show
Chlorophyll-a deviations, remote sensing (%) is currently reported for 213 countries. The highest value is 20.6% in Trinidad and Tobago; the lowest is 0.0% in Christmas Island.
The median across all reporting countries is 1.5%, and the mean is 3.4%.
Over the past decade 84 countries rose and 129 fell. The largest increase was in Guadeloupe (up 8,413.5%), and the largest decrease in Belgium (down 100.0%).
Chlorophyll-a deviations, remote sensing: full country ranking
| # | Country | Latest | Year | 10-year change | Trend |
|---|---|---|---|---|---|
| 1 | Trinidad and Tobago | 20.6% | 2022 | up 193.8% | volatile |
| 2 | Barbados | 18.2% | 2022 | up 702.5% | volatile |
| 3 | Congo | 17.8% | 2022 | up 36.4% | falling |
| 4 | Grenada | 16.8% | 2022 | up 143.8% | volatile |
| 5 | French Guiana | 15.7% | 2022 | up 15.1% | flat |
| 6 | Canada | 15.6% | 2022 | up 69.9% | rising |
| 7 | Suriname | 15.6% | 2022 | up 108.8% | rising |
| 8 | Democratic Republic of the Congo | 14.4% | 2022 | up 57.4% | falling |
| 9 | Greenland | 14.4% | 2022 | up 94.8% | rising |
| 10 | Guyana | 13.4% | 2022 | up 295.6% | volatile |
| 11 | Russia | 13.3% | 2022 | up 22.9% | rising |
| 11 | Russian Federation | 13.3% | 2022 | up 22.9% | rising |
| 13 | Svalbard and Jan Mayen Islands | 13.1% | 2021 | up 25.1% | rising |
| 14 | Sri Lanka | 13.1% | 2022 | up 260.7% | volatile |
| 15 | Falkland Islands (Malvinas) | 12.9% | 2022 | down 14.1% | rising |
| 16 | Gabon | 12.4% | 2022 | up 81.2% | falling |
| 17 | Norway | 11.1% | 2022 | down 24.0% | rising |
| 18 | Bulgaria | 11.1% | 2022 | up 2,198.2% | volatile |
| 19 | Nauru | 11.0% | 2022 | up 378.8% | volatile |
| 19 | Naoero | 11.0% | 2022 | up 378.8% | volatile |
| 21 | Iceland | 10.2% | 2022 | down 7.2% | rising |
| 22 | French Southern Territories | 10.1% | 2021 | up 97.4% | rising |
| 23 | Cameroon | 10.1% | 2022 | up 27.4% | rising |
| 24 | Ukraine | 9.2% | 2022 | up 975.3% | volatile |
| 25 | South Georgia and the South Sandwich Islands | 9.0% | 2022 | down 46.4% | flat |
| 26 | Peru | 8.8% | 2022 | up 46.1% | rising |
| 27 | Saint Vincent and the Grenadines | 8.8% | 2022 | up 1,036.6% | volatile |
| 28 | Chile | 8.7% | 2022 | up 76.4% | rising |
| 29 | Saint Pierre and Miquelon | 8.4% | 2022 | down 10.5% | volatile |
| 30 | Saint Lucia | 8.3% | 2022 | up 796.7% | volatile |
| 31 | Martinique | 8.1% | 2022 | up 775.4% | volatile |
| 32 | Guatemala | 7.9% | 2022 | up 45.6% | volatile |
| 33 | Romania | 7.9% | 2022 | up 402.0% | volatile |
| 34 | Turkey | 7.5% | 2022 | up 1,889.2% | volatile |
| 34 | Türkiye | 7.5% | 2022 | up 1,889.2% | volatile |
| 36 | Equatorial Guinea | 7.4% | 2022 | up 91.8% | falling |
| 37 | Uruguay | 7.3% | 2022 | up 36.9% | volatile |
| 38 | United Kingdom | 7.3% | 2022 | up 71.7% | rising |
| 38 | United Kingdom of Great Britain and Northern Ireland | 7.3% | 2022 | up 71.7% | rising |
| 40 | Ireland | 7.2% | 2022 | down 37.3% | rising |
| 41 | New Zealand | 6.9% | 2022 | up 94.4% | rising |
| 42 | Argentina | 6.6% | 2022 | down 40.3% | rising |
| 43 | Nigeria | 6.1% | 2022 | up 60.7% | rising |
| 44 | Djibouti | 5.9% | 2022 | up 16.7% | volatile |
| 45 | Faroe Islands | 5.8% | 2022 | up 58.2% | falling |
| 46 | India | 5.7% | 2022 | up 131.1% | rising |
| 47 | Eritrea | 5.4% | 2022 | up 38.4% | falling |
| 48 | Kazakhstan | 5.4% | 2022 | down 29.3% | volatile |
| 49 | Vanuatu | 5.4% | 2022 | up 394.2% | falling |
| 50 | Guadeloupe | 5.3% | 2022 | up 8,413.5% | volatile |
| 51 | Dominica | 5.1% | 2022 | up 675.7% | volatile |
| 52 | Democratic People's Republic of Korea | 5.0% | 2022 | up 55.7% | volatile |
| 53 | Western Sahara | 4.9% | 2022 | down 33.5% | falling |
| 54 | Yemen | 4.8% | 2022 | up 125.0% | flat |
| 55 | Venezuela (Bolivarian Republic of) | 4.7% | 2022 | up 59.7% | volatile |
| 56 | Angola | 4.6% | 2022 | up 5.2% | falling |
| 57 | Namibia | 4.4% | 2022 | down 65.2% | falling |
| 58 | United States | 4.3% | 2022 | down 32.3% | falling |
| 59 | Australia and New Zealand | 4.1% | 2022 | up 75.0% | rising |
| 60 | Brunei | 4.0% | 2022 | up 24.9% | volatile |
| 60 | Brunei Darussalam | 4.0% | 2022 | up 24.9% | volatile |
| 62 | France | 3.7% | 2022 | up 51.8% | rising |
| 63 | Australia | 3.5% | 2022 | up 90.1% | rising |
| 64 | Oman | 3.4% | 2022 | down 5.9% | falling |
| 65 | Gambia | 3.4% | 2022 | down 35.0% | volatile |
| 66 | El Salvador | 3.3% | 2022 | down 73.8% | volatile |
| 67 | Heard Island and McDonald Islands | 3.3% | 2022 | down 3.2% | volatile |
| 68 | Benin | 3.2% | 2022 | down 14.2% | volatile |
| 69 | South Korea | 3.1% | 2022 | up 23.1% | falling |
| 69 | Republic of Korea | 3.1% | 2022 | up 23.1% | falling |
| 71 | Bangladesh | 3.0% | 2022 | down 48.7% | falling |
| 72 | Guinea | 3.0% | 2022 | down 25.2% | volatile |
| 73 | Guinea-Bissau | 3.0% | 2022 | down 50.7% | volatile |
| 74 | Cote d'Ivoire | 2.9% | 2022 | up 6.9% | volatile |
| 74 | Côte d'Ivoire | 2.9% | 2022 | up 6.9% | volatile |
| 76 | Denmark | 2.8% | 2022 | down 28.9% | falling |
| 77 | South Africa | 2.8% | 2022 | up 9.1% | rising |
| 78 | Finland | 2.7% | 2022 | down 57.0% | volatile |
| 79 | China | 2.6% | 2022 | down 44.2% | falling |
| 80 | Senegal | 2.4% | 2022 | down 45.8% | falling |
| 81 | Gibraltar | 2.4% | 2022 | down 44.7% | volatile |
| 82 | Micronesia | 2.4% | 2022 | up 148.2% | volatile |
| 83 | Mexico | 2.4% | 2022 | down 44.6% | volatile |
| 84 | Spain | 2.3% | 2022 | down 49.9% | falling |
| 85 | Maldives | 2.3% | 2022 | up 597.1% | volatile |
| 86 | Somalia | 2.2% | 2022 | up 68.4% | falling |
| 87 | Nicaragua | 2.2% | 2022 | down 60.1% | volatile |
| 88 | Saint Martin (French Part) | 2.2% | 2022 | down 75.5% | volatile |
| 89 | Belize | 2.2% | 2022 | down 12.3% | volatile |
| 90 | Saint Barthélemy | 2.2% | 2022 | up 344.0% | volatile |
| 91 | Micronesia (Federated States of) | 2.2% | 2022 | up 2.6% | volatile |
| 92 | Papua New Guinea | 2.2% | 2022 | down 39.8% | volatile |
| 93 | Netherlands (Kingdom of the) | 2.1% | 2022 | down 28.5% | volatile |
| 94 | Melanesia | 2.0% | 2022 | down 32.5% | volatile |
| 95 | Georgia | 2.0% | 2022 | up 2,741.2% | volatile |
| 96 | Latvia | 2.0% | 2022 | down 35.3% | volatile |
| 97 | Cabo Verde | 2.0% | 2022 | down 15.6% | volatile |
| 98 | Sudan | 1.9% | 2022 | down 52.4% | volatile |
| 99 | Mauritania | 1.9% | 2022 | down 70.1% | volatile |
| 100 | Montenegro | 1.9% | 2022 | up 19.4% | volatile |
| 101 | Brazil | 1.7% | 2022 | up 18.4% | flat |
| 102 | Togo | 1.7% | 2022 | down 31.5% | volatile |
| 103 | Sierra Leone | 1.7% | 2022 | up 6.6% | volatile |
| 104 | Liberia | 1.6% | 2022 | up 21.3% | volatile |
| 105 | Germany | 1.6% | 2022 | down 34.7% | falling |
| 106 | Malaysia | 1.6% | 2022 | up 13.4% | volatile |
| 107 | Morocco | 1.5% | 2022 | down 85.1% | volatile |
| 108 | Ghana | 1.5% | 2022 | up 34.5% | volatile |
| 109 | United States Minor Outlying Islands | 1.4% | 2021 | down 15.4% | volatile |
| 110 | Marshall Islands | 1.4% | 2022 | down 42.5% | volatile |
| 111 | Fiji | 1.4% | 2022 | up 71.3% | rising |
| 112 | Costa Rica | 1.3% | 2022 | down 57.6% | volatile |
| 113 | Saudi Arabia | 1.3% | 2022 | down 33.1% | volatile |
| 114 | Panama | 1.2% | 2022 | down 65.1% | falling |
| 115 | Sint Maarten (Dutch part) | 1.2% | 2022 | down 98.8% | volatile |
| 116 | Sao Tome and Principe | 1.2% | 2022 | down 21.7% | volatile |
| 117 | Vietnam | 1.2% | 2022 | down 59.1% | falling |
| 117 | Viet Nam | 1.2% | 2022 | down 59.1% | falling |
| 119 | Antigua and Barbuda | 1.2% | 2022 | up 3,162.5% | volatile |
| 120 | Sweden | 1.2% | 2022 | down 73.6% | volatile |
| 121 | Pakistan | 1.2% | 2022 | down 72.4% | volatile |
| 122 | Pitcairn | 1.1% | 2022 | down 70.0% | volatile |
| 123 | Honduras | 1.1% | 2022 | up 46.3% | volatile |
| 124 | Indonesia | 1.1% | 2022 | down 38.2% | volatile |
| 125 | Madagascar | 1.1% | 2022 | down 23.7% | volatile |
| 126 | Ecuador | 1.1% | 2022 | down 70.4% | volatile |
| 127 | Estonia | 1.0% | 2022 | down 73.4% | volatile |
| 128 | State of Palestine | 1.0% | 2022 | down 44.1% | volatile |
| 129 | Colombia | 0.9% | 2022 | down 43.3% | falling |
| 130 | Albania | 0.6% | 2022 | down 83.0% | volatile |
| 131 | Portugal | 0.6% | 2022 | down 17.0% | volatile |
| 132 | Thailand | 0.6% | 2022 | down 23.5% | volatile |
| 133 | Tonga | 0.6% | 2022 | up 197.1% | volatile |
| 134 | Cambodia | 0.5% | 2022 | down 42.7% | volatile |
| 135 | Montserrat | 0.5% | 2022 | up 9.4% | volatile |
| 136 | Lithuania | 0.5% | 2022 | down 77.5% | volatile |
| 137 | Kenya | 0.5% | 2022 | down 48.3% | volatile |
| 138 | Solomon Islands | 0.5% | 2022 | down 36.6% | volatile |
| 139 | Palau | 0.5% | 2022 | up 139.7% | volatile |
| 140 | Guernsey | 0.5% | 2022 | up 2.9% | volatile |
| 141 | Mozambique | 0.5% | 2022 | down 55.5% | volatile |
| 142 | Tunisia | 0.5% | 2022 | down 56.1% | volatile |
| 143 | Caribbean | 0.5% | 2022 | down 69.7% | volatile |
| 144 | Israel | 0.5% | 2022 | up 183.4% | volatile |
| 145 | Greece | 0.4% | 2022 | down 3.7% | volatile |
| 146 | Myanmar | 0.4% | 2022 | down 81.6% | volatile |
| 147 | Philippines | 0.3% | 2022 | down 61.8% | falling |
| 148 | Jersey | 0.3% | 2022 | down 98.1% | volatile |
| 149 | Kuwait | 0.3% | 2022 | down 34.6% | volatile |
| 150 | Egypt | 0.3% | 2022 | down 65.6% | volatile |
| 151 | French Polynesia | 0.3% | 2022 | down 91.9% | volatile |
| 152 | Azerbaijan | 0.3% | 2022 | down 78.7% | volatile |
| 153 | Cuba | 0.3% | 2022 | down 87.4% | volatile |
| 154 | Saint Helena | 0.2% | 2022 | down 86.2% | volatile |
| 155 | Polynesia | 0.2% | 2022 | down 88.6% | volatile |
| 156 | Saint Kitts and Nevis | 0.2% | 2022 | up 9.1% | volatile |
| 157 | United Republic of Tanzania | 0.2% | 2022 | down 59.6% | volatile |
| 158 | New Caledonia | 0.2% | 2022 | up 16.7% | volatile |
| 159 | Turks and Caicos Islands | 0.2% | 2022 | down 75.3% | falling |
| 160 | Seychelles | 0.2% | 2022 | down 11.1% | volatile |
| 161 | Niue | 0.2% | 2022 | up 91.7% | volatile |
| 162 | Bonaire, Sint Eustatius and Saba | 0.2% | 2022 | down 80.1% | volatile |
| 163 | Reunion | 0.2% | 2022 | up 9.5% | volatile |
| 163 | Réunion | 0.2% | 2022 | up 9.5% | volatile |
| 165 | Turkmenistan | 0.2% | 2022 | down 79.1% | volatile |
| 166 | Iraq | 0.2% | 2022 | down 97.9% | volatile |
| 166 | Iran (Islamic Republic of) | 0.2% | 2022 | down 55.5% | volatile |
| 168 | Algeria | 0.2% | 2022 | down 87.2% | volatile |
| 169 | East Timor | 0.2% | 2022 | down 81.8% | volatile |
| 169 | Timor-Leste | 0.2% | 2022 | down 81.8% | volatile |
| 171 | Bahamas | 0.1% | 2022 | down 70.5% | falling |
| 172 | Syria | 0.1% | 2022 | down 94.3% | volatile |
| 172 | Syrian Arab Republic | 0.1% | 2022 | down 94.3% | volatile |
| 174 | Curacao | 0.1% | 2022 | down 85.1% | volatile |
| 174 | Curaçao | 0.1% | 2022 | down 85.1% | volatile |
| 176 | Aruba | 0.1% | 2022 | down 79.7% | volatile |
| 177 | Italy | 0.1% | 2022 | down 71.1% | volatile |
| 178 | Poland | 0.1% | 2022 | down 96.5% | volatile |
| 179 | Puerto Rico | 0.1% | 2022 | down 89.4% | volatile |
| 180 | Cook Islands | 0.1% | 2022 | down 82.0% | volatile |
| 181 | Dominican Republic | 0.1% | 2022 | down 83.0% | volatile |
| 182 | Qatar | 0.1% | 2022 | down 54.5% | volatile |
| 183 | Libya | 0.1% | 2022 | down 53.5% | volatile |
| 184 | Kiribati | 0.1% | 2022 | down 89.4% | volatile |
| 185 | Mauritius | 0.1% | 2022 | down 64.9% | volatile |
| 186 | Malta | 0.1% | 2022 | down 81.8% | volatile |
| 187 | Samoa | 0.1% | 2022 | down 95.9% | volatile |
| 188 | Haiti | 0.1% | 2022 | down 93.9% | volatile |
| 189 | Mayotte | 0.1% | 2022 | down 76.8% | volatile |
| 190 | Tuvalu | 0.1% | 2022 | down 39.6% | volatile |
| 191 | Bahrain | 0.1% | 2022 | down 89.2% | volatile |
| 192 | Cayman Islands | 0.0% | 2022 | down 39.8% | volatile |
| 193 | Norfolk Island | 0.0% | 2022 | down 48.4% | volatile |
| 194 | Jamaica | 0.0% | 2022 | down 49.1% | volatile |
| 195 | Croatia | 0.0% | 2022 | down 87.9% | volatile |
| 196 | Tokelau | 0.0% | 2022 | down 88.0% | volatile |
| 197 | Anguilla | 0.0% | 2022 | up 90.7% | volatile |
| 198 | Cocos (Keeling) Islands | 0.0% | 2022 | down 61.7% | volatile |
| 199 | Northern Mariana Islands | 0.0% | 2022 | up 334.6% | volatile |
| 200 | United States Virgin Islands | 0.0% | 2022 | down 95.5% | volatile |
| 201 | Lebanon | 0.0% | 2022 | down 96.8% | volatile |
| 202 | Wallis and Futuna Islands | 0.0% | 2022 | down 82.1% | volatile |
| 203 | British Virgin Islands | 0.0% | 2022 | down 31.6% | volatile |
| 204 | Cyprus | 0.0% | 2022 | down 72.7% | volatile |
| 205 | Guam | 0.0% | 2022 | down 37.1% | volatile |
| 206 | Bermuda | 0.0% | 2022 | down 70.7% | volatile |
| 207 | Comoros | 0.0% | 2022 | down 97.6% | volatile |
| 208 | American Samoa | 0.0% | 2022 | down 98.8% | volatile |
| 209 | Belgium | 0.0% | 2022 | down 100.0% | volatile |
| 209 | Monaco | 0.0% | 2022 | down 100.0% | volatile |
| 209 | Singapore | 0.0% | 2022 | down 100.0% | volatile |
| 209 | Slovenia | 0.0% | 2022 | down 100.0% | volatile |
| 209 | Christmas Island | 0.0% | 2022 | down 100.0% | volatile |
Regions and income groups
Aggregates are excluded from the country ranking above so that a region can never outrank a country.
- Middle Africa 11.7%
- Eastern Europe 10.2%
- Northern Europe 6.1%
- Europe 5.6%
- Europe and Northern America 5.5%
- Northern America 5.5%
- Sub-Saharan Africa 4.9%
- Southern Asia 4.8%
- Central and Southern Asia 4.8%
- Western Africa 4.6%
- United States of America 4.3%
- Americas 3.9%
- Africa 3.8%
- Least Developed Countries (LDCs) 3.7%
- Oceania 3.4%
- South America 3.3%
- Western Asia 3.2%
- World 3.2%
- Latin America and the Caribbean 3.0%
- Southern Africa 2.9%
- Central America 2.8%
- Asia 2.5%
- Western Europe 2.3%
- Oceania (exc. Australia and New Zealand) 2.0%
- Northern Africa and Western Asia 1.9%
- Small island developing States (SIDS) 1.0%
- Southern Europe 1.0%
- South-Eastern Asia 0.9%
- Eastern and South-Eastern Asia 0.5%
- Northern Africa 0.5%
- Eastern Asia 0.3%