Saudi Arabia vs Yemen: Standardised Precipitation-Evapotranspiration Index
Standardised Precipitation-Evapotranspiration Index over time
- Saudi Arabia
- Yemen
How they compare
Yemen currently reports -1.58 against -1.62 in Saudi Arabia, a difference of 0.04.
The two have swapped places 24 times across 64 shared years of data; in 1960 it was Yemen ahead.
Saudi Arabia ranks 172nd and Yemen ranks 170th of 189 countries.
Across the 7 decades both report, Saudi Arabia averaged higher in 3 and Yemen in 4.
Head to head by decade
| Decade | Saudi Arabia | Yemen | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.0817 | 0.9091 | 0.8275 | Yemen |
| 1970s | 0.3143 | -0.8331 | 1.15 | Saudi Arabia |
| 1980s | 0.2136 | -0.4658 | 0.6794 | Saudi Arabia |
| 1990s | 0.2938 | -0.0993 | 0.3932 | Saudi Arabia |
| 2000s | -1.16 | -0.8346 | 0.3284 | Yemen |
| 2010s | -1.18 | -0.5869 | 0.5943 | Yemen |
| 2020s | -1.77 | -0.9633 | 0.8063 | Yemen |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher standardised precipitation-evapotranspiration index, Saudi Arabia or Yemen?
- Yemen, at -1.58 against -1.62 in Saudi Arabia as of 2023.
- What is the difference in standardised precipitation-evapotranspiration index between Saudi Arabia and Yemen?
- 0.04, with Yemen ahead.
- How many years of comparable data are there for Saudi Arabia and Yemen?
- 64 years are reported by both, from 1960 to 2023.
- How do Saudi Arabia and Yemen rank globally for standardised precipitation-evapotranspiration index?
- Saudi Arabia ranks 172nd and Yemen 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.