The phrase "step up monitoring" is a correct and usable part of a sentence in written English.
You can use it to express an increase in the level of surveillance and vigilance of a particular situation. For example, "With the increased risk of terrorism, authorities have decided to step up monitoring of major airports."
Public health authorities throughout eastern China have ordered hospitals, schools, nurseries and poultry farms to step up monitoring for flu-like symptoms.
"We have instructed Tepco to work on reducing some of the biggest risks, and we as regulators will step up monitoring".
On Thursday, it said it would "strengthen its team of medical doctors" to step up monitoring of the prisoners' health.
An Actors Equityy spokeswoman confirmed that explanation, but also said the union would "step up" monitoring of the show.
Officials said the operation would also step up monitoring of Iraq's foreign intelligence service, which they believe operates under diplomatic cover from Baghdad's mission at the United Nations.
The ministry also said it would step up monitoring of currency markets by asking financial institutions to report on positions held by their currency dealers.
It has stepped up monitoring of radiation levels.
In response, the French government tightened restrictions on cash payments and stepped up monitoring of high-value withdrawals.
The National Security Agency stepped up monitoring of cellphones in Yemen and penetrated computer networks to intercept electronic messages.
David Kocieniewski (NYT) CONNECTICUT HARTFORD: MORE OVERSIGHT FOR APPRAISERS -- Connecticut is stepping up monitoring of real estate appraisers in response to a threat by federal regulators to decertify them.
Since the Sept. 11 attacks, there have been signs that the United States and its allies have stepped up monitoring in the area.
