The most common and most likely answer to this crossword clue is the 8 letter word NORTHERN
I've seen this crossword clue in The Times
N
O
R
T
H
E
R
N
More clues leading to the result NORTHERN
- New troops joining the navy in higher latitudes
- Boreal throne toppled by sailors
- Lights up Mancunian way
- In one quarter, no respite at first given to our sailors
- Mad brother blowing his top is breaking news from Yorkshire?
- Black line, or the navy alongside green, ultimately?
- Black line’s radius, different rings in the news?
- No sailors either from Northumberland?
- Throne decorated with navy line
- Line from the other side of Watford?
Buddy explains!

The straight part
We know that "in higher latitudes" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in higher latitudes = northern.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 NORTHERN mean?
NORTHERN noun- An inhabitant of the northern regions.
- The northern pike.
- Of, facing, situated in, or related to the north;northerly.
- (of a wind) Blowing from the north; northerly.
- Characteristic of the North of England (usually capitalised)