The most common and most likely answer to this crossword clue is the 9 letter word RESURFACE
I've seen this crossword clue in The Times
R
E
S
U
R
F
A
C
E
More clues leading to the result RESURFACE
- Note wave-riding champ come up again
- Absurd farce, sure to occur again?
- Come up again to put new top on
- New, but not unknown, Surrey cafe? That’s come up again
- Once more appear sure about farce, perhaps
- Employer backs right side to rise once more
- About to be met by coastal sport expert and bob up again?
- At last, some waves in trough become evident again
- Wake up again to do some road work?
Buddy explains!

The straight part
We know that "occur again" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case occur again = resurface.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RESURFACE mean?
RESURFACE verb- To come once again to the surface
- To provide a new surface, to replace or remodel the surface of something, or to restore a surface. To put a new coating or finish on a surface.
- To arise or become evident again. To re-occur or reappear.
- To make something reappear.
- (of a person) To come out of hiding or obscurity.