Chlorophyll-a deviation from the global average in Cook Islands

Cook Islands: Chlorophyll-a deviation from the global average was 0.1% in 2022. ◆ Volatile

Latest (2022)
0.1%
Change on year
up 33.3%
World rank
161st
of 195 countries
All-time high
5.6%
in 2011
All-time low
0.0%
in 2017
Years of data
18
2005–2022

Chlorophyll-a deviation from the global average in Cook Islands, 2005–2022

02462005201320222005: 0.1 %2006: 0.11 %2007: 0.12 %2008: 0.26 %2009: 2.6 %2010: 0.14 %2011: 5.6 %2012: 0.68 %2013: 0.06 %2014: 0.05 %2015: 0.18 %2016: 0.04 %2017: 0.01 %2018: 0.02 %2019: 0.09 %2020: 0.01 %2021: 0.09 %2022: 0.12 %

Source: UN Statistics Division – processed by Our World in Data. Measured in %.

Analysis

Cook Islands recorded 0.1% for chlorophyll-a deviation from the global average in 2022.

The figure is up 33.3% on the previous year and down 82.4% over ten years.

Over the whole period, chlorophyll-a deviation from the global average in Cook Islands peaked at 5.6% in 2011 and was at its lowest, 0.0%, in 2017.

That places Cook Islands 161st out of 195 countries with data for 2022, putting it in the bottom quarter.

The series is highly variable year to year, so single readings are best treated with caution.

Chlorophyll-a deviation from the global average in Cook Islands, year by year

Annual values for Chlorophyll-a deviation from the global average in Cook Islands, 2005 to 2022.
Year % Change
2005 0.1%
2006 0.1% +10.0%
2007 0.1% +9.1%
2008 0.3% +116.7%
2009 2.6% +915.4%
2010 0.1% -94.7%
2011 5.6% +3878.6%
2012 0.7% -87.8%
2013 0.1% -91.2%
2014 0.1% -16.7%
2015 0.2% +260.0%
2016 0.0% -77.8%
2017 0.0% -75.0%
2018 0.0% +100.0%
2019 0.1% +350.0%
2020 0.0% -88.9%
2021 0.1% +800.0%
2022 0.1% +33.3%

Biggest year-on-year movements

Years where Chlorophyll-a deviation from the global average in Cook Islands changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.

YearChange FromTo
2011 +3878.6% 0.1% 5.6%
2009 +915.4% 0.3% 2.6%

Averages by decade

DecadeAverage LowestHighest Years
2000s 0.6% 0.1% 2.6% 5
2010s 0.7% 0.0% 5.6% 10
2020s 0.1% 0.0% 0.1% 3

Countries ranked near Cook Islands

  1. 159 Italy 0.1% compare
  2. 159 Poland 0.1% compare
  3. 161 Dominican Republic 0.1% compare
  4. 161 Puerto Rico 0.1% compare
  5. 164 Libya 0.1% compare
  6. 164 Qatar 0.1% compare

See the full ranking of 195 places →

More reference data data for Cook Islands

All data for Cook Islands →

Frequently asked questions

What is chlorophyll-a deviation from the global average in Cook Islands?
Chlorophyll-a deviation from the global average in Cook Islands was 0.1% in 2022, according to UN Statistics Division – processed by Our World in Data.
What is the highest chlorophyll-a deviation from the global average recorded in Cook Islands?
The highest recorded value was 5.6% in 2011.
What is the lowest chlorophyll-a deviation from the global average recorded in Cook Islands?
The lowest recorded value was 0.0% in 2017.
How does Cook Islands rank for chlorophyll-a deviation from the global average?
Cook Islands ranks 161st out of 195 countries with data for 2022.
Is chlorophyll-a deviation from the global average rising or falling in Cook Islands?
Over the last ten years it is down 82.4%. The long-run trend across the full record is volatile.
Where does this Cook Islands data come from?
The figures come from UN Statistics Division – processed by Our World in Data, published as part of Chlorophyll-a deviation from the global average. Statizoid updates them automatically from the source API.

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Chlorophyll-a deviation from the global average in Cook Islands. Statizoid, drawing on UN Statistics Division – processed by Our World in Data. Retrieved 23 September 2026, from https://reference.statizoid.com/stat/chlorophyll-a-deviation-from-the-global-average/cook-islands/

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About this data

Indicator
Chlorophyll-a deviation from the global average
Unit
%
Source
UN Statistics Division – processed by Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
195 places, 3,445 data points, 2005–2022
Last refreshed

Chlorophyll-a deviations, remote sensing (%).