Author Archives: danaallen

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 →

Posted in Climate, Climate change, Climate modelling, Greenhouse gases | Leave a comment

How To Find A Planet

Posted on 1 February, 2022 by danaallen

By Jochen Broecker To make this clear straight away: this entry will only marginally touch upon weather and climate, but it will not be entirely unrelated altogether. Since you are reading this blog you must be interested in the natural sciences … Continue reading →

Posted in Astronomy, Climate, History of Science | Leave a comment

2021 Weather Ups and Downs In Reading

Posted on 24 January, 2022 by danaallen

By Roger Brugge Averages and anomalies mentioned in this report refer to the climatological period 1991-2020. Historical records date back to 1901 for rainfall, 1956 for sunshine and to 1908 for most other weather elements. 2021 seemed to be a year … Continue reading →

Posted in Climate, Historical climatology, Rainfall, Sunshine, Temperature, Weather | Leave a comment

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, space weather | Leave a comment

The Climate Feedback: More Than The Sum Of Its Parts

Posted on 6 December, 2021 by danaallen

By: Jonah Bloch-Johnson One of the main numbers that climate scientists use to predict global warming is the “climate feedback,” which measures how effective warming is at countering the effects of CO2. CO2 reduces how much energy the planet sheds to … Continue reading →

Posted in Climate, Climate change, Energy budget | Leave a comment

Forecast West Africa by Dr. Bunny Rabbit

Posted on 29 November, 2021 by danaallen

By: Paul-Arthur Monerie References: *“Forecast” stands here for the projection of changes in precipitation at the end of the 21st century (a 40-year period average, between 2060 and 2099) relative to the end of the 20th century (1960-1999), in summer (JAS) and for … Continue reading →

Posted in Africa, Atmospheric circulation, Climate, Climate change, Monsoons | Leave a comment

Metrology, Earth Observation and Climate Data

Posted on 22 November, 2021 by danaallen

By: Jonathan Mittaz  Metrology is the science of measurement which both defines the System International (SI, The International System of Units, 2019) as well as mathematical frameworks for measurement uncertainties (for example see the GUM: Guide to the expression of Uncertainty in Measurement, … Continue reading →

Posted in Climate, Climate change, earth observation, Measurements and instrumentation, Remote sensing | Leave a comment

Green shoots from the grassroots at the 26th Conference of the Parties

Posted on 15 November, 2021 by danaallen

By: Chris Merchant On the opening two days of COP26, I was in Glasgow to raise awareness of the climate and environmental data freely available from satellite observations of Earth. While the news media focus on big political headlines from COP26, … Continue reading →

Posted in Climate, Climate change, earth observation, net zero carbon, Remote sensing | Leave a comment

Advance Of The Indian Monsoon Onset

Posted on 8 November, 2021 by danaallen

By: Arathy Menon The Indian monsoon provides water for agriculture, industry and the basic water needs of more than a billion people. The monsoon onset usually takes place in south India during the beginning of June and the monsoon rains then … Continue reading →

Posted in Climate, Monsoons, Numerical modelling, Rainfall, Tropical convection | Leave a comment