How large and compact could a cold east Mongolia-like steppe be on an Earth-sized planet?

Welcome to planet X! Planet X is the same as Earth in radius, composition, axial tilt and orbits star Y (identical to the Sun). Planet X has a moon known as moon Z (identical to Earth's moon).

Could an east Mongolia-like region (Köppen BSk) exist on planet X meeting all of the following requirements?

• At least 4 million sq. km. of contiguous Köppen BSk/BWk climate type (preferably 5 million sq. km.)
• Relatively compact (not a long, narrow strip of BSk/BWk climate type)
• Occasional plateaus with colder weather (Köppen Dwb/Dwc) on top

You may do anything with planet X as long as it meets this requirement.

posted over 4 years ago

galactic_analyzer‭

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