Iran vs Oman: Standardised Precipitation-Evapotranspiration Index
Standardised Precipitation-Evapotranspiration Index over time
- Iran
- Oman
How they compare
Iran currently reports -1.61 against -1.62 in Oman, a difference of 0.01.
The two have swapped places 27 times across 64 shared years of data; in 1960 it was Oman ahead.
Iran ranks 170th and Oman ranks 172nd of 188 countries.
Across the 7 decades both report, Iran averaged higher in 4 and Oman in 3.
Head to head by decade
| Decade | Iran | Oman | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.1459 | 0.379 | 0.2331 | Oman |
| 1970s | 0.3877 | 0.0454 | 0.3423 | Iran |
| 1980s | 0.1105 | -0.025 | 0.1355 | Iran |
| 1990s | 0.1809 | 0.1171 | 0.0638 | Iran |
| 2000s | -1.07 | -0.937 | 0.1339 | Oman |
| 2010s | -1.05 | -1.31 | 0.2664 | Iran |
| 2020s | -1.47 | -1.3 | 0.1709 | Oman |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher standardised precipitation-evapotranspiration index, Iran or Oman?
- Iran, at -1.61 against -1.62 in Oman as of 2023.
- What is the difference in standardised precipitation-evapotranspiration index between Iran and Oman?
- 0.01, with Iran ahead.
- How many years of comparable data are there for Iran and Oman?
- 64 years are reported by both, from 1960 to 2023.
- How do Iran and Oman rank globally for standardised precipitation-evapotranspiration index?
- Iran ranks 170th and Oman ranks 172nd of 188 countries.
- Where does this data come from?
- Global SPEI database (SPEIbase). https://spei.csic.es/database.html, published as Standardised Precipitation-Evapotranspiration Index. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
The SPEI fulfills the requirements of a drought index since its multi-scalar character enables it to be used by different scientific disciplines to detect, monitor, and analyze droughts. Like the sc-PDSI and the SPI, the SPEI can measure drought severity according to its intensity and duration, and can identify the onset and end of drought episodes. The SPEI allows comparison of drought severity through time and space, since it can be calculated over a wide range of climates, as can the SPI.