Chlorophyll-a deviation from the global average in Ireland

Ireland: Chlorophyll-a deviation from the global average was 7.2% in 2022. ▲ Rising

Latest (2022)
7.2%
Change on year
down 7.8%
World rank
36th
of 195 countries
All-time high
11.8%
in 2014
All-time low
1.4%
in 2006
Years of data
18
2005–2022

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

2.557.51012.52005201320222005: 6.2 %2006: 1.4 %2007: 5.6 %2008: 4.2 %2009: 10.6 %2010: 4.5 %2011: 6.3 %2012: 11.5 %2013: 6.8 %2014: 11.8 %2015: 10.7 %2016: 8.3 %2017: 7 %2018: 5.6 %2019: 8 %2020: 9.2 %2021: 7.8 %2022: 7.2 %

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

Analysis

The most recent figure for chlorophyll-a deviation from the global average in Ireland is 7.2%, measured in 2022.

Compared with earlier readings it is down 7.8% on the previous year and down 37.4% over ten years.

Over the whole period, chlorophyll-a deviation from the global average in Ireland peaked at 11.8% in 2014 and was at its lowest, 1.4%, in 2006.

Ireland ranks 36th of 195 countries on this measure, in the top quarter.

The long-run direction has been consistently rising across the 18 years of available data.

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

Annual values for Chlorophyll-a deviation from the global average in Ireland, 2005 to 2022.
Year % Change
2005 6.2%
2006 1.4% -77.0%
2007 5.6% +292.3%
2008 4.2% -24.6%
2009 10.6% +149.6%
2010 4.5% -57.4%
2011 6.3% +39.3%
2012 11.5% +83.1%
2013 6.8% -40.3%
2014 11.8% +71.7%
2015 10.7% -9.4%
2016 8.3% -22.2%
2017 7.0% -16.0%
2018 5.6% -19.0%
2019 8.0% +41.3%
2020 9.2% +15.1%
2021 7.8% -14.9%
2022 7.2% -7.8%

Ireland compared with similar countries

  • Ireland's 7.2% is above the median for high income countries, which is 1.2%, 6.0× the median. (71 countries reporting)
  • Ireland's 7.2% is above the median for Europe & Central Asia, which is 2.0%, 3.6× the median. (37 countries reporting)

Biggest year-on-year movements

Years where Chlorophyll-a deviation from the global average in Ireland 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
2007 +292.3% 1.4% 5.6%

Averages by decade

DecadeAverage LowestHighest Years
2000s 5.6% 1.4% 10.6% 5
2010s 8.0% 4.5% 11.8% 10
2020s 8.1% 7.2% 9.2% 3

Countries ranked near Ireland

  1. 33 Equatorial Guinea 7.4% compare
  2. 34 Uruguay 7.3% compare
  3. 35 United Kingdom 7.3% compare
  4. 37 New Zealand 6.9% compare
  5. 38 Argentina 6.6% compare
  6. 39 Nigeria 6.1% compare

See the full ranking of 195 places →

More reference data data for Ireland

All data for Ireland →

Frequently asked questions

What is chlorophyll-a deviation from the global average in Ireland?
Chlorophyll-a deviation from the global average in Ireland was 7.2% 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 Ireland?
The highest recorded value was 11.8% in 2014.
What is the lowest chlorophyll-a deviation from the global average recorded in Ireland?
The lowest recorded value was 1.4% in 2006.
How does Ireland rank for chlorophyll-a deviation from the global average?
Ireland ranks 36th out of 195 countries with data for 2022.
Is chlorophyll-a deviation from the global average rising or falling in Ireland?
Over the last ten years it is down 37.4%. The long-run trend across the full record is rising.
Where does this Ireland 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 Ireland. 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/ireland/

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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 (%).