The Climate of Middle-Earth
sciencehabit writes "One does not simply model the climate of Mordor; unless, of course, you are the University of Bristol's Dan Lunt, who has created a climate simulation of J. R. R. Tolkien's Middle-earth from The Hobbit and The Lord of the Rings. Using supercomputers and a model originally developed by the U.K. Met Office, his study compares Middle-earth's climate with those of our (modern) and the dinosaur's (Late Cretaceous) worlds. The Middle-earth model reveals that the Shire — home to the Hobbits — would enjoy weather much like England's East Midlands, with an average temperature of 7C and about 61 cm of rainfall each year. An epic journey to Mount Doom, however, would see a shift in climate, with the subtropical Mordor region being more like Los Angeles or western Texas."
The full academic paper is available in English, Elvish, and Dwarfish.
It's not translated. It's just using elvish and dwarfish scripts.
The Plains of Gorgoroth that Frodo and Sam struggled across fits that description, yes. But Nurn, around the Sea of Nurnen in the southeast was quite fertile (though not pleasant--no place in Morder was pleasant) and raised abundant crops. After all, Sauron's armies had to be fed somehow.