Historical exposure to drought — Land soil moisture anomaly in Tamil Nadu
Tamil Nadu: Historical exposure to drought — Land soil moisture anomaly was 4.81 Percentage change in 2025. ◆ Volatile
Historical exposure to drought — Land soil moisture anomaly in Tamil Nadu, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Percentage change.
Analysis
In 2025, historical exposure to drought — land soil moisture anomaly in Tamil Nadu stood at 4.81 Percentage change.
Compared with earlier readings it is down 51.7% on the previous year and down 65.5% over ten years.
Over the whole period, historical exposure to drought — land soil moisture anomaly in Tamil Nadu peaked at 18.11 Percentage change in 2010 and was at its lowest, -18.89 Percentage change, in 1952.
That places Tamil Nadu 194th out of 3112 regions with data for 2025, putting it in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Historical exposure to drought — Land soil moisture anomaly in Tamil Nadu, year by year
| Year | Percentage change | Change |
|---|---|---|
| 1950 | -18.44 Percentage change | — |
| 1951 | -6.49 Percentage change | -64.8% |
| 1952 | -18.89 Percentage change | +191.2% |
| 1953 | -4.28 Percentage change | -77.3% |
| 1954 | -2.57 Percentage change | -40.0% |
| 1955 | 3.92 Percentage change | -252.7% |
| 1956 | 11.22 Percentage change | +186.2% |
| 1957 | -2.68 Percentage change | -123.9% |
| 1958 | -3.22 Percentage change | +20.0% |
| 1959 | -4.72 Percentage change | +46.5% |
| 1960 | -3.64 Percentage change | -22.8% |
| 1961 | -0.075 Percentage change | -97.9% |
| 1962 | 1.3 Percentage change | -1834.9% |
| 1963 | 7.18 Percentage change | +452.0% |
| 1964 | -0.2105 Percentage change | -102.9% |
| 1965 | 8.23 Percentage change | -4010.0% |
| 1966 | 12.77 Percentage change | +55.1% |
| 1967 | 1.68 Percentage change | -86.9% |
| 1968 | 7.95 Percentage change | +374.3% |
| 1969 | 1.02 Percentage change | -87.1% |
| 1970 | 2.2 Percentage change | +114.9% |
| 1971 | -4.55 Percentage change | -306.9% |
| 1972 | -7.02 Percentage change | +54.2% |
| 1973 | -1.24 Percentage change | -82.3% |
| 1974 | -8.14 Percentage change | +556.2% |
| 1975 | -1.44 Percentage change | -82.3% |
| 1976 | -11.7 Percentage change | +710.7% |
| 1977 | -7.28 Percentage change | -37.8% |
| 1978 | -8.09 Percentage change | +11.1% |
| 1979 | 1.62 Percentage change | -120.0% |
| 1980 | -6.85 Percentage change | -522.7% |
| 1981 | 2.05 Percentage change | -129.9% |
| 1982 | -17.95 Percentage change | -976.2% |
| 1983 | -8.26 Percentage change | -54.0% |
| 1984 | 10.66 Percentage change | -229.1% |
| 1985 | -3.33 Percentage change | -131.2% |
| 1986 | -2 Percentage change | -39.9% |
| 1987 | -7.35 Percentage change | +267.1% |
| 1988 | -2.82 Percentage change | -61.6% |
| 1989 | -4.99 Percentage change | +76.9% |
| 1990 | -7.72 Percentage change | +54.6% |
| 1991 | 2.61 Percentage change | -133.8% |
| 1992 | -6.57 Percentage change | -352.2% |
| 1993 | -0.8747 Percentage change | -86.7% |
| 1994 | 4.91 Percentage change | -661.6% |
| 1995 | 0.3497 Percentage change | -92.9% |
| 1996 | -7.87 Percentage change | -2351.3% |
| 1997 | -0.3702 Percentage change | -95.3% |
| 1998 | 0.1334 Percentage change | -136.0% |
| 1999 | -0.9146 Percentage change | -785.7% |
| 2000 | 5.06 Percentage change | -653.0% |
| 2001 | 1.75 Percentage change | -65.5% |
| 2002 | -5.3 Percentage change | -403.7% |
| 2003 | 1.63 Percentage change | -130.7% |
| 2004 | 3.14 Percentage change | +93.2% |
| 2005 | 2.82 Percentage change | -10.3% |
| 2006 | 1.86 Percentage change | -34.2% |
| 2007 | 4.41 Percentage change | +137.7% |
| 2008 | 12.35 Percentage change | +179.9% |
| 2009 | 4.49 Percentage change | -63.6% |
| 2010 | 18.11 Percentage change | +303.0% |
| 2011 | 14.1 Percentage change | -22.1% |
| 2012 | 1.3 Percentage change | -90.8% |
| 2013 | -0.8602 Percentage change | -166.2% |
| 2014 | -3.21 Percentage change | +273.0% |
| 2015 | 13.95 Percentage change | -534.7% |
| 2016 | -1.95 Percentage change | -114.0% |
| 2017 | 6.56 Percentage change | -435.8% |
| 2018 | -1.09 Percentage change | -116.6% |
| 2019 | 5.03 Percentage change | -560.0% |
| 2020 | 6.61 Percentage change | +31.6% |
| 2021 | 11.16 Percentage change | +68.9% |
| 2022 | 8.39 Percentage change | -24.8% |
| 2023 | 12.9 Percentage change | +53.7% |
| 2024 | 9.96 Percentage change | -22.8% |
| 2025 | 4.81 Percentage change | -51.7% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | -4.61 Percentage change | -18.89 Percentage change | 11.22 Percentage change | 10 |
| 1960s | 3.62 Percentage change | -3.64 Percentage change | 12.77 Percentage change | 10 |
| 1970s | -4.56 Percentage change | -11.7 Percentage change | 2.2 Percentage change | 10 |
| 1980s | -4.08 Percentage change | -17.95 Percentage change | 10.66 Percentage change | 10 |
| 1990s | -1.63 Percentage change | -7.87 Percentage change | 4.91 Percentage change | 10 |
| 2000s | 3.22 Percentage change | -5.3 Percentage change | 12.35 Percentage change | 10 |
| 2010s | 5.19 Percentage change | -3.21 Percentage change | 18.11 Percentage change | 10 |
| 2020s | 8.97 Percentage change | 4.81 Percentage change | 12.9 Percentage change | 6 |
Countries ranked near Tamil Nadu
- 191 United Arab Emirates -80.98 Percentage change compare
More environment data for Tamil Nadu
- Historical exposure to drought — Cropland soil moisture anomaly 5.07 Percentage change (2025)
- Exposure to drought — Cropland soil moisture anomaly 14.28 Percentage change (2024)
- Exposure to drought — Land soil moisture anomaly 13.97 Percentage change (2024)
- River flooding exposure — Cropland share exposed to river flooding 5.85 Percentage of agricultural land area (2022)
- Land cover and land cover change — Grassland 396.02 Square kilometres (2022)
- Land cover and land cover change — Loss of cropland 2,826 Square kilometres (2022)
- Land cover and land cover change — Gain of artificial surfaces 1,731 Square kilometres (2022)
Frequently asked questions
- What is historical exposure to drought — land soil moisture anomaly in Tamil Nadu?
- Historical exposure to drought — land soil moisture anomaly in Tamil Nadu was 4.81 Percentage change in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest historical exposure to drought — land soil moisture anomaly recorded in Tamil Nadu?
- The highest recorded value was 18.11 Percentage change in 2010.
- What is the lowest historical exposure to drought — land soil moisture anomaly recorded in Tamil Nadu?
- The lowest recorded value was -18.89 Percentage change in 1952.
- How does Tamil Nadu rank for historical exposure to drought — land soil moisture anomaly?
- Tamil Nadu ranks 194th out of 3112 regions with data for 2025.
- Is historical exposure to drought — land soil moisture anomaly rising or falling in Tamil Nadu?
- Over the last ten years it is down 65.5%. The long-run trend across the full record is volatile.
- Where does this Tamil Nadu data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Historical exposure to drought — Land soil moisture anomaly. Statizoid updates them automatically from the source API.
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About this data
The dataset provides annual anomalies in land and cropland soil moisture content of the top soil layer (0 to 7 cm) compared to the reference period 1981-2010. Exposure indicators to drought have been prepared by the Organisation for Economic Co-operation and Development (OECD). Please see the working paper for a more complete description of the methods. The datasets span the period 1981-2024 and is the result of the use of a variety of geospatial data sources, including the ERA5-Land averaged monthly data of volumetric soil moisture and ESA CCI land cover data. Average anomalies have been calculated for both land and cropland exposure to drought. The dataset has a global coverage on a national level; on the sub-national TL2 level (i.e. large subnational regions) results are reported for all OECD countries as well as for Argentina, Brazil, China, India, Indonesia and South Africa. A number of aggregates are included: Euro area, European Union, Advanced economies, Emerging market economies, G7, G20, OECD, OECD Europe, OECD Asia Oceania, OECD Americas and the LAC region. Data source(s): Copernicus Climate Change Initiative land cover data and Copernicus Climate Data Store monthly soil moisture data based on the ERA5-Land reanalysis dataset. Contact: ENV.Stat@oecd.org