# What percentage of Earth's surface is arid?

Is there available information on how much of Earth surface is arid climate?

• I'm glad you liked the answer. However, I wonder How the question you mention would be answering your question? – Camilo Rada Mar 22 '18 at 17:33
• May be I wronly assumed that by "dry land" he meant "arid" ? Did he just mean "land"? – Pablo Mar 22 '18 at 17:38
• I see. Yes, I think that question refers just to land, or in other words: Earth's surface not covered by water. – Camilo Rada Mar 22 '18 at 17:46
• It would be desirable if you edit your question accordingly, to do not mislead others that might end up here looking for the same answer. – Camilo Rada Mar 22 '18 at 17:49

We get that the four arid climates (group B), add up to $4.401 \times 10^7 {km}^2$ of a total of $1.527 \times 10^8 {km}^2$ inventoried in the dataset (A good match for the figure of of global land area of $1.489 \times 10^8 km^2$ listed by wikipedia), leading to a grand total of 28.8% of Earth's land surface corresponding to arid climates.