The phrase "affect the frequency and" is correct and usable in written English.
It can be used in contexts discussing how certain factors influence the occurrence or rate of something, often in scientific or technical discussions.
Example: "Changes in temperature can affect the frequency and intensity of weather patterns."
Alternatives: "influence the rate and" or "impact the occurrence and".
The idea that ENSO can affect the frequency and locations of tornadoes and other severe storm systems isn't new.
The grading profiles of the defect layer affect the frequency and intensity of photonic defect modes.
Climate change is predicted to affect the frequency and severity of extreme weather events such as cyclones, hurricanes, and prolonged droughts.
Changing patterns of deforestation, river flow and hurricanes might affect the frequency and size of such 'wood falls', which could have a significant impact on deep-sea diversity, the authors say.
Systems devised by IBM, a technology firm, watch how big local events, proximity to payday and the weather affect the frequency and location of lawbreaking.
It is found that the Oersted field and non-uniform current distribution affect the frequency and precession mode both qualitatively and quantitatively.
Multivariate analyses showed that configurational accessibility, visibility and walking distances significantly affect the frequencies and locations of unprogrammed face-to-face consultations.
The warming and shoaling of the warm water core observed since the 1980s (ref. 30) have likely affected the frequency and the heat content of the warm water pulses reaching the FIS.
To identify the factors affecting the frequency and quality of taking a sexual history among GPs (general practitioners) working in primary health care units in Istanbul.
The factors affecting the frequency and force of heart muscle contraction are critical in determining the normal pumping performance of the heart and its response to changes in demand.
