Australian Indian Ocean Territories is a very small or disputed unit (under 20 classified 1 km map cells), so this page is not listed in search engines and its figures are only a rough guide.
Climate zones in Australian Indian Ocean Territories, 1991 to 2020
Share of Australian Indian Ocean Territories's classified land in each Köppen-Geiger zone in 1991 to 2020. Zones under 0.05% are left out. The 81 map cells used cover 62% of the country's outline (about 68 km²).
By major group: A (tropical) 100%.
Almost all of Australian Indian Ocean Territories is one climate: Am, tropical monsoon, which covers 94% of its classified land in 1991 to 2020. In plain terms, tropical monsoon means hot all year, with a very wet season and a short dry spell. Under the middle-of-the-road scenario (SSP2-4.5), 6.2% of its land is projected to be in a different zone by 2071 to 2099, with the biggest gain going to Af (tropical rainforest).
How Australian Indian Ocean Territories's zones have changed and may change
Each row compares a map with 1991 to 2020. "Share in a different zone" is the share of the country's area whose class is different from 1991 to 2020. Future rows are model projections under an emissions scenario, not forecasts.
| Map | Share in a different zone | Different major group | Biggest gain | Biggest loss |
|---|---|---|---|---|
| 1901 to 1930 (past) | 0% | 0% | No change | No change |
| 2071 to 2099, SSP1-2.6 (low emissions) | 7.4% | 0% | Af +7.4 percentage points | Am -7.4 percentage points |
| 2071 to 2099, SSP2-4.5 (middle of the road) | 6.2% | 0% | Af +6.2 percentage points | Am -6.2 percentage points |
| 2071 to 2099, SSP5-8.5 (high emissions) | 6.1% | 0% | Am +6.1 percentage points | Af -6.1 percentage points |
For the past row, the comparison runs the other way: the 1901 to 1930 map against 1991 to 2020.
Zone shares by map
| Zone | 1901 to 1930 | 1991 to 2020 | SSP1-2.6 (2071 to 2099) | SSP2-4.5 (2071 to 2099) | SSP5-8.5 (2071 to 2099) |
|---|---|---|---|---|---|
| Am Tropical monsoon | 94% | 94% | 87% | 88% | 100% |
| Af Tropical rainforest | 6.1% | 6.1% | 14% | 12% | - |
Percentages are of the country's classified land in each map. A dash means under 0.05%.
Zones found in Australian Indian Ocean Territories
Data: Beck et al. (2023), CC BY 4.0; country outlines from Natural Earth. In 1901 to 1930 the most common zone was Am. See data sources and licences.