McCullough decided to apply for the position to “work at the UK’s most remote post office in Antarctica” after hearing about it on the news.
She said the “more I read, the more I thought this is the most fantastic opportunity”.
“To work for a charity in the Antarctica is fantastic and we are supporting that link from the past to the present day, making sure the heritage is still there for future generations,” she said.
The crew will share a bunk room and withstand no running water or flushing toilets, while working in almost constant daylight and sub-zero conditions.
The UKAHT said that chocolate, packet soup and mini-watercolour sets will make up much of the team’s entertainment during their five-month stay.
“I love chocolate so I made sure I sent some over. We will be there over my birthday and Christmas so I have a few presents also,” McCullough told BBC News NI.
The team will also be sent to another base called Wordie House, which is the site of the only continuous record of the climate there since the 1940s.
It is still used to record climate changes today.