Lenghu borders
Da Qaidam to the east,
Mangnai to the west,
Aksai Kazakh Autonomous County (
Gansu) to the north, and
Ruoqiang County (
Xinjiang) to the northwest, and is part of the northwestern
Qaidam Basin in an area dotted frequently by
yardangs.
Climate As with most of northwestern Qinghai, Lenghu has an
arid climate (
Köppen BWk), with long, cold winters, and warm summers. It is the driest locale in the country, with only of precipitation annually, and it is not uncommon for months to pass by without any rainfall, though underground water resources are plentiful. The monthly 24-hour average temperature drops to in January and rises to in July, while the annual mean is ;
diurnal temperature variation is wide, averaging annually. The area is also extremely sunny; with monthly percent possible sunshine ranging from 72% in July to 85% in October, the area receives 3,443 hours of bright sunshine annually. ==References==