Chlorophyll-a deviation from the global average in Norfolk Island
Norfolk Island: Chlorophyll-a deviation from the global average was 0.1% in 2022. ◆ Volatile
Chlorophyll-a deviation from the global average in Norfolk Island, 2005–2022
Source: UN Statistics Division – processed by Our World in Data. Measured in %.
Analysis
Norfolk Island recorded 0.1% for chlorophyll-a deviation from the global average in 2022.
That represents a change of down 91.9% on the previous year and down 44.4% over ten years.
Over the whole period, chlorophyll-a deviation from the global average in Norfolk Island peaked at 1.5% in 2009 and was at its lowest, 0.0%, in 2007.
That places Norfolk Island 171st 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 Norfolk Island, year by year
| Year | % | Change |
|---|---|---|
| 2005 | 0.4% | — |
| 2006 | 0.2% | -42.1% |
| 2007 | 0.0% | -90.9% |
| 2008 | 0.2% | +1150.0% |
| 2009 | 1.5% | +488.0% |
| 2010 | 0.3% | -77.6% |
| 2011 | 0.1% | -84.8% |
| 2012 | 0.1% | +80.0% |
| 2013 | 0.0% | -55.6% |
| 2014 | 0.2% | +450.0% |
| 2015 | 0.5% | +109.1% |
| 2016 | 0.0% | -95.7% |
| 2017 | 0.8% | +4050.0% |
| 2018 | 0.1% | -92.8% |
| 2019 | 1.3% | +2000.0% |
| 2020 | 0.3% | -73.8% |
| 2021 | 0.6% | +87.9% |
| 2022 | 0.1% | -91.9% |
Biggest year-on-year movements
Years where Chlorophyll-a deviation from the global average in Norfolk Island 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.
| Year | Change | From | To |
|---|---|---|---|
| 2017 | +4050.0% | 0.0% | 0.8% |
| 2019 | +2000.0% | 0.1% | 1.3% |
| 2008 | +1150.0% | 0.0% | 0.2% |
| 2009 | +488.0% | 0.2% | 1.5% |
| 2014 | +450.0% | 0.0% | 0.2% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 0.5% | 0.0% | 1.5% | 5 |
| 2010s | 0.3% | 0.0% | 1.3% | 10 |
| 2020s | 0.3% | 0.1% | 0.6% | 3 |
Countries ranked near Norfolk Island
More reference data data for Norfolk Island
- Share of land used for permanent meadows and pastures 25 percent (2023)
- Land area in hectares, annual growth rate 0 % change on previous year (2023)
- Land area in hectares 4,000 hectares (2023)
- Area of permanent meadows and pastures, annual growth rate 0 % change on previous year (2023)
- Exposure to extreme temperature — Annual temperature change 0.1343 Degrees celsius (2023)
- Exposure to extreme precipitation — Annual precipitation change -12.14 Millimetres per year (2023)
- Area of permanent meadows and pastures 1,000 hectares (2023)
- Red List Index 0.62 index (2025)
- Share of the total land area burnt by wildfires each year 0.0% (2026)
- Member countries of the International Treaty on Plant Genetic Resources for Food and Agriculture 0 number (2025)
Frequently asked questions
- What is chlorophyll-a deviation from the global average in Norfolk Island?
- Chlorophyll-a deviation from the global average in Norfolk Island 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 Norfolk Island?
- The highest recorded value was 1.5% in 2009.
- What is the lowest chlorophyll-a deviation from the global average recorded in Norfolk Island?
- The lowest recorded value was 0.0% in 2007.
- How does Norfolk Island rank for chlorophyll-a deviation from the global average?
- Norfolk Island ranks 171st out of 195 countries with data for 2022.
- Is chlorophyll-a deviation from the global average rising or falling in Norfolk Island?
- Over the last ten years it is down 44.4%. The long-run trend across the full record is volatile.
- Where does this Norfolk Island 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.
Download this data
CSV · JSON — 18 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Chlorophyll-a deviations, remote sensing (%).