"You have to wear sunglasses, every single day. My pen froze in my bag. I peed into a bottle in the middle of an ice shelf, fully clothed, using a green plastic instrument called, unspeakably, a Pstyle.
"I ate so many dense, sweet energy bars I thought my teeth might fall out."
The 24-year-old star has been "obsessed" with the continent since childhood, and noted how her passion only increased during her teenage years.
She wrote: "There was another thing, galvanised in my late teens — Antarctica was melting. Our whole world was getting warmer, in fact, the mercury rising by minute amounts, inching us toward the unthinkable.
"I pictured a giant slush pile, scientists frantically bailing out glaciers with buckets. Antarctica's high drama compelled me. I had to see it before it was too late.
"And because I'm a pop star, and the world is extremely unfair, I made a few calls, got several dozen booster shots, and I was off in search of the end of the world."
Lorde - whose real name is Ella Yelich-O'Connor - has been inspired to release a book of writings and photographs from her time there, and she hopes to inspire others to do what they can to save the area.
She added: "I get it — protecting our most precious natural resources can feel abstract, to say the least. Most of them we've never seen, except in a documentary.
"We're attempting to pay off our predecessors' environmental debts in the hazy hope that our descendants will thrive. It's a lot to ask of a species hungry for faster and brighter gratification, less and less distance.
"But I understand it now, and I hope you find ways to as well. Great wonders like this are what's at stake."
