Iran, Islamic Republic of vs Yemen, Republic of: Standardised Precipitation-Evapotranspiration Index
Standardised Precipitation-Evapotranspiration Index over time
- Iran, Islamic Republic of
- Yemen, Republic of
How they compare
Yemen, Republic of currently reports -1.58 against -1.61 in Iran, Islamic Republic of, a difference of 0.03.
The two have swapped places 24 times across 64 shared years of data; in 1960 it was Yemen, Republic of ahead.
Iran, Islamic Republic of ranks 171st and Yemen, Republic of ranks 170th of 189 countries.
Across the 7 decades both report, Iran, Islamic Republic of averaged higher in 3 and Yemen, Republic of in 4.
Head to head by decade
| Decade | Iran, Islamic Republic of | Yemen, Republic of | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.1459 | 0.9091 | 0.7632 | Yemen, Republic of |
| 1970s | 0.3877 | -0.8331 | 1.22 | Iran, Islamic Republic of |
| 1980s | 0.1105 | -0.4658 | 0.5764 | Iran, Islamic Republic of |
| 1990s | 0.1809 | -0.0993 | 0.2803 | Iran, Islamic Republic of |
| 2000s | -1.07 | -0.8346 | 0.2363 | Yemen, Republic of |
| 2010s | -1.05 | -0.5869 | 0.46 | Yemen, Republic of |
| 2020s | -1.47 | -0.9633 | 0.5029 | Yemen, Republic of |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher standardised precipitation-evapotranspiration index, Iran, Islamic Republic of or Yemen, Republic of?
- Yemen, Republic of, at -1.58 against -1.61 in Iran, Islamic Republic of as of 2023.
- What is the difference in standardised precipitation-evapotranspiration index between Iran, Islamic Republic of and Yemen, Republic of?
- 0.03, with Yemen, Republic of ahead.
- How many years of comparable data are there for Iran, Islamic Republic of and Yemen, Republic of?
- 64 years are reported by both, from 1960 to 2023.
- How do Iran, Islamic Republic of and Yemen, Republic of rank globally for standardised precipitation-evapotranspiration index?
- Iran, Islamic Republic of ranks 171st and Yemen, Republic of ranks 170th of 189 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.