Category Archives: Climate modelling

Has The Atlantic Ocean Circulation Been In Long-term Decline?

Posted on 2 May, 2022 by danaallen

By: Jon Robson A number of recent high-profile studies have strongly suggested that an important part of the North Atlantic Ocean circulation – the AMOC – has declined and that it is edging closer to a tipping point. Such a … Continue reading →

Posted in Climate, Climate change, Climate modelling, North Atlantic, Oceans | Leave a comment

Antarctic Sea Ice: The Global Climate Driver Of The South

Posted on 19 April, 2022 by danaallen

By: Holly Ayres In the Northern Hemisphere, our closest region of sea ice (not to be confused with land ice) is the Arctic, a vast region of frozen ocean at the North Pole. Antarctica, a huge mountainous land mass at … Continue reading →

Posted in Antarctic, Arctic, Atmospheric circulation, Climate, Climate change, Climate modelling, Cryosphere, Oceans, Polar | Leave a comment

Climate Change 2021—The Physical Science Basis

Posted on 1 March, 2022 by danaallen

By: Jonathan Gregory, Ed Hawkins, Matt Palmer This document is a short summary of key points that are of current relevance to society from the physical science of climate change. It is based on the headline statements of the report … Continue reading →

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Why should we care about sea ice floes?

Posted on 14 February, 2022 by danaallen

By: Adam Bateson One of the most frequently used visual devices to illustrate climate change is that of a polar bear on sea ice surrounded by open ocean (Fig. 1). Polar bears are today identified as a vulnerable species, with sea ice decline the … Continue reading →

Posted in Arctic, Climate, Climate modelling, Cryosphere, Numerical modelling, Polar | Leave a comment

Atmospheric CO2, fossil fuel emissions, Shared Socioeconomic Pathways and the Paris Agreement.

Posted on 7 February, 2022 by danaallen

By: Tristan Quaife The Paris Agreement, which is signed by 193 countries belonging to the United Nations Framework Convention on Climate Change, aims to limit the rise in global mean temperature to 2°C, and ideally 1.5°C, above pre-industrial levels. To achieve … Continue reading →

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The Sun’s Magnetic Field: From Minutes To Millennia

Posted on 17 January, 2022 by danaallen

By: Mathew Owens The Sun’s magnetic field varies on all observed time scales. Knowing how the solar magnetic field has changed in the past helps us plan for hazardous conditions in the space environment in the future. It is also important … Continue reading →

Posted in Climate, Climate modelling, Solar radiation, Space | Tagged | Leave a comment

Regional vs Global Models From The Perspective of a Polar Climate Scientist

Posted on 18 October, 2021 by danaallen

By: Charlotte Lang There is a debate in the world of polar climate and ice sheet surface modelling about global (GCM) versus regional (RCM) models and each side is trying to convince the other that they do better: global modellers … Continue reading →

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Modelling Dust Extremes Over East Asia

Posted on 4 October, 2021 by danaallen

 By: Dhirendra Kumar Mineral dust plays an important role in the earth system due to its interaction with climate, ecosystems, biogeochemical cycles, and human society in direct and indirect ways [1,2,3]. Their interactions with the weather and climate occur at … Continue reading →

Posted in Aerosols, Air quality, China, Climate, Climate modelling | Tagged | Leave a comment

Does working from home help to reduce climate change?

Posted on 23 November, 2020 by danaallen

By: Helen Dacre During a recent conversation about working from home during the COVID-19 pandemic a friend asked me ‘Given that I no longer commute to work in my car every day, will that help to reduce climate change?’  The … Continue reading →

Posted in Climate modelling, Covid-19, Greenhouse gases, IPCC | Leave a comment

Large and irreversible future decline of the Greenland ice-sheet

Posted on 12 October, 2020 by danaallen

By: Jonathan Gregory Sea-level rise is one of the most serious consequences of global warming. By the end of this century, if emissions of greenhouse gases continue to increase (mostly carbon dioxide, from burning oil, natural gas and coal), global … Continue reading →

Posted in Climate, Climate change, Climate modelling, IPCC, Polar | Leave a comment