Chlorophyll-a deviation from the global average in Saint Helena
Saint Helena: Chlorophyll-a deviation from the global average was 0.2% in 2022. ◆ Volatile
Chlorophyll-a deviation from the global average in Saint Helena, 2005–2022
Source: UN Statistics Division – processed by Our World in Data. Measured in %.
Analysis
In 2022, chlorophyll-a deviation from the global average in Saint Helena stood at 0.2%. That is the lowest value across all 18 years on record.
Compared with earlier readings it is down 91.1% on the previous year and down 86.1% over ten years.
Over the whole period, chlorophyll-a deviation from the global average in Saint Helena peaked at 4.2% in 2009 and was at its lowest, 0.2%, in 2022.
That places Saint Helena 141st out of 195 countries with data for 2022, putting it in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Chlorophyll-a deviation from the global average in Saint Helena, year by year
| Year | % | Change |
|---|---|---|
| 2005 | 2.3% | — |
| 2006 | 1.7% | -23.7% |
| 2007 | 3.1% | +76.4% |
| 2008 | 2.4% | -22.1% |
| 2009 | 4.2% | +73.6% |
| 2010 | 3.5% | -15.2% |
| 2011 | 3.1% | -12.8% |
| 2012 | 1.8% | -41.4% |
| 2013 | 1.2% | -30.6% |
| 2014 | 1.5% | +16.8% |
| 2015 | 2.0% | +40.4% |
| 2016 | 0.5% | -76.6% |
| 2017 | 0.9% | +83.3% |
| 2018 | 0.9% | +8.0% |
| 2019 | 1.4% | +50.5% |
| 2020 | 2.0% | +37.1% |
| 2021 | 2.8% | +43.9% |
| 2022 | 0.2% | -91.1% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 2.7% | 1.7% | 4.2% | 5 |
| 2010s | 1.7% | 0.5% | 3.5% | 10 |
| 2020s | 1.7% | 0.2% | 2.8% | 3 |
Countries ranked near Saint Helena
- 139 Azerbaijan 0.3% compare
- 140 Cuba 0.3% compare
- 142 Saint Kitts and Nevis 0.2% compare
- 143 Tanzania 0.2% compare
- 144 New Caledonia 0.2% compare
More reference data data for Saint Helena
- Foreign aid received as grants and concessional loans, annual growth 185.85 % change on previous year (2024)
- Foreign aid received by income group 53.68 million constant 2024 US$ (2024)
- Foreign aid received from governments and private foundations 53.68 million constant 2024 US$ (2024)
- Foreign aid received by income group, annual growth rate 185.85 % change on previous year (2024)
- Foreign aid received from governments and private foundations, annual 185.85 % change on previous year (2024)
- Foreign aid received, annual growth rate 185.85 % change on previous year (2024)
- Foreign aid received as grants and concessional loans 53.68 million constant 2024 US$ (2024)
- Foreign aid received 53.68 million constant 2024 US$ (2024)
- Foreign aid received per capita 10,202 constant 2024 US$ (2024)
- Exposure to extreme precipitation — Annual precipitation change 44.23 Millimetres per year (2023)
Frequently asked questions
- What is chlorophyll-a deviation from the global average in Saint Helena?
- Chlorophyll-a deviation from the global average in Saint Helena was 0.2% 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 Saint Helena?
- The highest recorded value was 4.2% in 2009.
- What is the lowest chlorophyll-a deviation from the global average recorded in Saint Helena?
- The lowest recorded value was 0.2% in 2022.
- How does Saint Helena rank for chlorophyll-a deviation from the global average?
- Saint Helena ranks 141st out of 195 countries with data for 2022.
- Is chlorophyll-a deviation from the global average rising or falling in Saint Helena?
- Over the last ten years it is down 86.1%. The long-run trend across the full record is volatile.
- Where does this Saint Helena 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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CSV · JSON — 18 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Chlorophyll-a deviations, remote sensing (%).