The phrase "an area of persistent" is correct and usable in written English.
It can be used to describe a specific region or field where something continues to occur or exist over time, often in a negative context.
Example: "The researchers focused on an area of persistent drought that has affected the local agriculture for several years."
Alternatives: "a zone of ongoing" or "a region of continual".
2. This is an area of persistent confusion among many scholars and advocates.
"They are aggressive and fight forward," says Captain Ray Dalzell, one of the sweat-stained British advisers in Attal, a new base the ANA built after sweeping up the Gereshk valley, an area of persistent Taliban activity.
Two foreshocks of magnitude 7.3 and 6.0 took place 2 days earlier within 100 km north of the M 9.0 mainshock with similar focal mechanisms, and many major aftershocks occurred in the following days in an area of persistent background seismicity extending several hundred kilometers.
Typhoon Abby developed from an area of persistent convection to the southwest of Truk in early August.
The origin of Typhoon Krovanh can be traced back to an area of persistent convection well east of Chuuk State on August 13.
Midday on May 18, the JTWC began to monitor an area of persistent disturbed weather associated with a broad low-pressure area southwest of Chuuk.
Early recognition of mental health problems may represent an area of unmet clincal need in persistent pain conditions.
Polar vortex, also called circumpolar vortex, polar low, or polar cyclone, large area of persistent low pressure generally located above each of Earth's polar regions and containing a mass of extremely cold air.
The total area of persistent (4 years or older) ice has declined from 718,000 square miles to 42,000 square miles in the time period above.
To create two complete wall-to-wall land-cover maps for the region, we merged our 2001 and 2006 change layers with the remaining area of persistent land cover from the NLCD.
But in a sense it's also a step backward in an area of public health already plagued by persistent inequality.
