News from the Columbia Climate School

Tag: ocean sediments

  • How We Know Today’s Climate Change Is Not Natural

    How We Know Today’s Climate Change Is Not Natural

    Despite the many climate “skeptics” in key positions of power today, 97 percent of climate scientists agree that the warming of Earth’s climate over the last 100 years is mainly due to human activity. Why are they so sure?

  • Almost Home, with Another 7 Million Years of Climate History

    Almost Home, with Another 7 Million Years of Climate History

    Science at sea isn’t easy, but the benefits are huge, writes Sidney Hemming in her final post from a two-month expedition that collected millions of years of climate history in the deep-sea sediment from off southern Africa.

  • Finding Microfossils off Southern Africa

    Finding Microfossils off Southern Africa

    Expedition 361’s newest sediment cores brought up spectacular foraminifera—translucent, glassy and “very pretty” throughout the ocean sediment.

  • A Surprise from the Zambezi River

    A Surprise from the Zambezi River

    Sidney Hemming and her team aboard the JOIDES Resolution got a surprise when they began taking sediment cores from their first river site off southern Africa—about 10 times more sediment than expected.

  • Mozambique Core Brings Up 7 Million Years of Climate History

    Mozambique Core Brings Up 7 Million Years of Climate History

    With calm seas, the JOIDES Resolution’s latest sediment core comes up with what appears to be a fantastic, cyclic climate signal that is continuous back 7 million years, writes Sidney Hemming.

  • We’re Headed for Mozambique!

    We’re Headed for Mozambique!

    After weeks of anticipation, permission arrived just in time to core off Mozambique. Sidney Hemming and her team of scientists aboard the JOIDES Resolution are excited about what they might learn from the ocean sediment.

  • Trials & Tribulations of Coring the Agulhas Plateau

    Trials & Tribulations of Coring the Agulhas Plateau

    Trying to drill sediment cores while the ship rides large ocean swells off the coast of Africa isn’t easy, but it’s paying off for science, writes Sidney Hemming.

  • Uncovering the Stories of Southern Africa’s Climate Past

    Uncovering the Stories of Southern Africa’s Climate Past

    Sidney Hemming is preparing to spend two months at sea studying global ocean circulation and southern Africa’s climate variability over the past 5 million years.

  • Study Tracks an Abrupt Climate Shift as Ice Age Glaciers Began to Retreat

    Study Tracks an Abrupt Climate Shift as Ice Age Glaciers Began to Retreat

    That change would have affected the monsoons, today relied on to feed over half the world’s population, and could have helped tip the climate system over the threshold for deglaciation.

Science for the Planet: In these short video explainers, discover how scientists and scholars across the Columbia Climate School are working to understand the effects of climate change and help solve the crisis.
  • How We Know Today’s Climate Change Is Not Natural

    How We Know Today’s Climate Change Is Not Natural

    Despite the many climate “skeptics” in key positions of power today, 97 percent of climate scientists agree that the warming of Earth’s climate over the last 100 years is mainly due to human activity. Why are they so sure?

  • Almost Home, with Another 7 Million Years of Climate History

    Almost Home, with Another 7 Million Years of Climate History

    Science at sea isn’t easy, but the benefits are huge, writes Sidney Hemming in her final post from a two-month expedition that collected millions of years of climate history in the deep-sea sediment from off southern Africa.

  • Finding Microfossils off Southern Africa

    Finding Microfossils off Southern Africa

    Expedition 361’s newest sediment cores brought up spectacular foraminifera—translucent, glassy and “very pretty” throughout the ocean sediment.

  • A Surprise from the Zambezi River

    A Surprise from the Zambezi River

    Sidney Hemming and her team aboard the JOIDES Resolution got a surprise when they began taking sediment cores from their first river site off southern Africa—about 10 times more sediment than expected.

  • Mozambique Core Brings Up 7 Million Years of Climate History

    Mozambique Core Brings Up 7 Million Years of Climate History

    With calm seas, the JOIDES Resolution’s latest sediment core comes up with what appears to be a fantastic, cyclic climate signal that is continuous back 7 million years, writes Sidney Hemming.

  • We’re Headed for Mozambique!

    We’re Headed for Mozambique!

    After weeks of anticipation, permission arrived just in time to core off Mozambique. Sidney Hemming and her team of scientists aboard the JOIDES Resolution are excited about what they might learn from the ocean sediment.

  • Trials & Tribulations of Coring the Agulhas Plateau

    Trials & Tribulations of Coring the Agulhas Plateau

    Trying to drill sediment cores while the ship rides large ocean swells off the coast of Africa isn’t easy, but it’s paying off for science, writes Sidney Hemming.

  • Uncovering the Stories of Southern Africa’s Climate Past

    Uncovering the Stories of Southern Africa’s Climate Past

    Sidney Hemming is preparing to spend two months at sea studying global ocean circulation and southern Africa’s climate variability over the past 5 million years.

  • Study Tracks an Abrupt Climate Shift as Ice Age Glaciers Began to Retreat

    Study Tracks an Abrupt Climate Shift as Ice Age Glaciers Began to Retreat

    That change would have affected the monsoons, today relied on to feed over half the world’s population, and could have helped tip the climate system over the threshold for deglaciation.