An atmospheric scientist explains why water can do some strange-looking things at very cold temperatures, and what’s different about snowfalls on Mars.
Bundled up against the cold in downtown Chicago, Sunday, Jan. 27, 2019.
AP Photo/Nam Y. Huh
Life-threatening cold temperatures in the central US are caused by changes in wind circulation in the Arctic that bring cold air south. Climate change could make these events more frequent.
People living in run-down, inner city apartments, like these in Cairo, are at risk of heat-stress health problems.
Shutterstock
Twice every day the Bureau of Meteorology sends out the official weather forecasts for towns and cities across Australia. Here’s how we work out what to say in them.
Storm clouds move over the Illawarra south of Sydney on Wednesday, November 28 2018. Sydney received more than a month’s worth of rain in just two hours, with Observatory Hill recording 84.6mm by 7am. The November average is 83.8mm.
Dean Lewins/AAP
The forecast arrival of El Niño may mean the east coast of Australia will experience an exceptionally hot and dry summer, but does this mean there will be fewer mosquitoes buzzing about?
Heart attacks increase with lower air temperature, lower atmospheric air pressure, higher wind velocity, shorter sunshine duration and colder weather.
from shutterstock.com
Madeleine De Gabriele, The Conversation e Wes Mountain, The Conversation
Cyclone season approacheth, but this year there’s a twist
The Conversation, CC BY31,4 MB(download)
Australia must come to terms with some fundamental shifts in our weather patterns. This month, Andrew Watkins from the BOM and climate scientist Joelle Gergis explore what's in store.
Swordfish only – no bycatch, please.
Joe Fish Flynn/shutterstock
Donald Trump claims his administration has carried out an “all-out effort” in preparing for the effects of climate change. Nothing could be further from the truth.
Icy hailstones can do major damage, depending where they land.
AP Photo/Nati Harnik
The future climate that scientists predict for the middle of the United States is one that will foster more hail events with bigger hailstones.
Sometimes air goes up past the condensation level then falls back below the condensation level, then up, then below, again and again. This creates clouds that are stripy, often with lines between the clouds.
Robert Lawry/Author provided
Clouds formed by rising warm air currents are called ‘convection clouds’. Because of all the rising air coming up, these clouds can be bumpy on top, sometimes looking like cotton wool or cauliflower.
Hurricane Florence, as seen over the Atlantic Ocean on Sept. 9.
NOAA NWS National Hurricane Center/Handout via REUTERS
Ants have many tricks to deal with rain – like holding their breath, blocking nest entrances or drinking excess water and releasing it elsewhere by ‘communal peeing.’ But can they see rain coming?
It’s unlikely NSW will get the sustained rain needed to break the drought.
Alex Ellinghausen/AAP