Chlorophyll-a deviations, remote sensing in Guernsey
Guernsey: Chlorophyll-a deviations, remote sensing was 0.5% in 2022. ◆ Volatile
Chlorophyll-a deviations, remote sensing in Guernsey, 2005–2022
Source: United Nations Statistics Division, SDG Global Database. Measured in %.
Analysis
In 2022, chlorophyll-a deviations, remote sensing in Guernsey stood at 0.5%.
That represents a change of down 39.6% on the previous year and up 2.9% over ten years.
Over the whole period, chlorophyll-a deviations, remote sensing in Guernsey peaked at 35.3% in 2014 and was at its lowest, 0.5%, in 2012.
Guernsey ranks 140th of 213 countries on this measure, in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Chlorophyll-a deviations, remote sensing in Guernsey, year by year
| Year | % | Change |
|---|---|---|
| 2005 | 8.6% | — |
| 2006 | 4.2% | -50.7% |
| 2007 | 8.0% | +90.1% |
| 2008 | 4.2% | -47.9% |
| 2009 | 4.4% | +5.9% |
| 2010 | 6.3% | +42.6% |
| 2011 | 4.2% | -33.1% |
| 2012 | 0.5% | -88.4% |
| 2013 | 2.8% | +483.1% |
| 2014 | 35.3% | +1140.5% |
| 2015 | 2.9% | -91.8% |
| 2016 | 1.1% | -62.6% |
| 2017 | 0.9% | -17.6% |
| 2018 | 1.4% | +52.6% |
| 2019 | 2.9% | +116.9% |
| 2020 | 1.2% | -58.1% |
| 2021 | 0.8% | -32.6% |
| 2022 | 0.5% | -39.6% |
Biggest year-on-year movements
Years where Chlorophyll-a deviations, remote sensing in Guernsey 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 |
|---|---|---|---|
| 2014 | +1140.5% | 2.8% | 35.3% |
| 2013 | +483.1% | 0.5% | 2.8% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 5.9% | 4.2% | 8.6% | 5 |
| 2010s | 5.8% | 0.5% | 35.3% | 10 |
| 2020s | 0.9% | 0.5% | 1.2% | 3 |
Countries ranked near Guernsey
More development goals data for Guernsey
- Red List Index 0.9474 index (2025)
- Change in maximum river flow 28.8% (2024)
- Change in minimum river flow -2.2% (2024)
- River flow maximum 3.16 m3 per sec (2024)
- River flow minimum 0.0285 m3 per sec (2024)
- Annual mean levels of fine particulate matter (population-weighted) 8.3 µg/m³ (2023)
- Prevalence of hepatitis B surface antigen (HBsAg), 2026 methodology 0.0% (2024)
- Countries with death registration data that are at least 75 percent 1 (2024)
- Land area 6.35 ha th (2025)
- Chlorophyll-a anomaly, remote sensing 0.2% (2022)
Frequently asked questions
- What is chlorophyll-a deviations, remote sensing in Guernsey?
- Chlorophyll-a deviations, remote sensing in Guernsey was 0.5% in 2022, according to United Nations Statistics Division, SDG Global Database.
- What is the highest chlorophyll-a deviations, remote sensing recorded in Guernsey?
- The highest recorded value was 35.3% in 2014.
- What is the lowest chlorophyll-a deviations, remote sensing recorded in Guernsey?
- The lowest recorded value was 0.5% in 2012.
- How does Guernsey rank for chlorophyll-a deviations, remote sensing?
- Guernsey ranks 140th out of 213 countries with data for 2022.
- Is chlorophyll-a deviations, remote sensing rising or falling in Guernsey?
- Over the last ten years it is up 2.9%. The long-run trend across the full record is volatile.
- Where does this Guernsey data come from?
- The figures come from United Nations Statistics Division, SDG Global Database, published as part of Chlorophyll-a deviations, remote sensing (%). Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 18 observations, free to reuse under UN SDG Global Database (open, attribution requested).