This is the only English notice I could find:

https://www.ghsplash.com/danish-norwegian-author-jorn-riel-cause-of-death/

Danish-Norwegian author, playwright, and storyteller Jørn Riel was born in Odense, Denmark, on July 23, 1931, and died in Kuala Lumpur, Malaysia, on August 18, 2023.

He is renowned for his creative output, most of which is influenced by his time spent living in Greenland and other arctic locales.

The distinctive landscapes, customs, and culture of the Arctic, especially Greenland, are frequently depicted in Riel’s writing.

He is recognised for his ability to craft engrossing tales that take readers to far-flung, difficult settings while simultaneously delving into the human experience and emotions.

https://en.wikipedia.org/wiki/J%C3%B8rn_Riel
(with photo and booklist)

https://radioh.no/gronland-forfatteren-jorn-riel-92-er-dod/
(in Danish, with color photo)

Translation:

Greenland author Jørn Riel (92) has died Award-winning Danish author Jørn Riel died on Friday at the age of 92. He is best known for his books about Greenland. Riel's publishing house Lindhart and Ringhof confirmed his death to the Danish news agency Ritzau. He died at his home in Kuala Lumpur, Malaysia. Riel is survived by his wife and three children. Riel made his debut as a writer at the age of 39 and published over 40 works during his lifetime. He wrote novels, poems, children's books and so-called chronicles. Most of what Riel wrote was based on Greenland, a place he became particularly interested in as a child. He lived there himself for ten years and had a strong love for the place.

In the early 1950s, Riel participated in the Lauge Koch expedition to Greenland. He then moved to the town of Ittoqqortoormiit, formerly known as Scoresbysund. Here he began to write down stories that the locals told him, which later became the basis of his writing. In 1995, the Danish author received the honorary award De Gylde Laurel, and in 2010 he was awarded the Danish Academy's Grand Prize. The latter is considered Denmark's foremost literary tribute. He has also received numerous other awards for his works. Riel was also the UN envoy in war zones in the Middle East from 1964 to 1972, and he later moved to Malaysia. He died there on Friday morning local time.

https://www.google.com/search?q=%22J%C3%B8rn+Riel%22+books&tbm=isch&ved=2ahUKEwijxf2Gq-6AAxXbFmIAHegrA-gQ2-cCegQIABAA&oq=%22J%C3%B8rn+Riel%22+books&gs_lcp=CgNpbWcQAzoHCAAQGBCABDoKCAAQigUQsQMQQzoICAAQgAQQsQM6BwgAEIoFEENQxFBY8Hpg43xoAHAAeACAAVuIAYcJkgECMTaYAQCgAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=3KbjZKPnM9utiLMP6NeMwA4&bih=933&biw=1920
(book covers)

From The Shipwreck (vol. 1 of The Inuk Quartet):

"When his father is murdered, a young viking boy named Leiv stows away on a ship bound for Greenland, intending to avenge the death. But the boat is wrecked in a storm and his search for revenge becomes a struggle for survival. Leiv is saved by an Inuit brother and sister and starts a new life in an icy land. Slowly he becomes aware of a way of life and value system which centers around peace rather than war, showing a profound respect for the natural world."

https://www.kirkusreviews.com/author/jorn-riel/
(three Kirkus reviews - it seems the quartet is actually a trilogy)

https://www.goodreads.com/author/show/689045.J_rn_Riel
(reader reviews)
https://www.youtube.com/watch?v=gX4yuPTSAuo
(one-minute tribute video)

http://www.isuma.tv/en/arnaitvideo/interview-jorn-riel-author-morgendagen-tomorrow
(Interview - in English! 11:12 minutes long.)

"Danish writer Jorn Riel, author of For Morgendagen, the book that inspired the filmmakers of Before Tomorrow, is interviewed by Marie-Hélène Cousineau, co-director of the film. He talks about his experience in Greenland and his love and respect for the old Inuit women he met as a young adventurer in the Arctic. This interview took place on his farm in Sweden, in 2005."

https://www.google.com/search?sca_esv=558805880&hl=en&q=%22J%C3%B8rn+Riel%22&tbm=vid&source=lnms&sa=X&ved=2ahUKEwjz-vW8rO6AAxUHFFkFHfUYCLwQ0pQJegQIChAB&biw=1920&bih=933&dpr=1
(more videos - in Danish?)