Neil Malan

Oceanographer @ccrc_unsw, usually to be found in on, or sometimes under-, water.

[Neil Malan @NeilMalan]

@ek_rugby @martinpeter79 Surely Grant Williams on that list too

[Neil Malan @NeilMalan]

Proud to see Fernando’s first PhD paper out, wahoo!

[Neil Malan @NeilMalan]

@MikeRagg @Ben_Domensino Just realised that I put up an old one. My mistake!

[Neil Malan @NeilMalan]

@MikeRagg @Ben_Domensino Could be different stations I guess? I haven’t crossed-checked against another station

[Neil Malan @NeilMalan]

@MikeRagg @Ben_Domensino https://t.co/2sIitb1NWI

[Neil Malan @NeilMalan]

@MikeRagg @Ben_Domensino Not @Ben_Domensino, but I‘ll put up one tomorrow if I remember

[Neil Malan @NeilMalan]

Awesome images, and a rather fantastic patch of ocean

[NASA Earth @NASAEarth]

Just in – data from our newest Earth-observing satellite, PACE!

With PACE data, scientists can study microscopic life in the ocean and particles in the air, allowing us to monitor ocean health, air pollution, and impacts of climate change. More: https://t.co/qq4OBYhxYC

[Neil Malan @NeilMalan]

You can see the effect of an increase in the amount of freshwater flowing into the ocean in this ocean colour image from @IMOS_AUS oceancurrent (red patches along the coast next to rivers and estuaries). Note how the plumes flow north due to Coriolis!

[Neil Malan @NeilMalan]

It's been a rather rainy week here in Sydney, it felt a lot like the record rains of 2022. So I plotted up the data and wow! This week has been an almost perfect match with April 2022. However, in 2022 we had already received an entire year's worth of rainfall by this stage.

[Neil Malan @NeilMalan]

@Worboys3 @snowfreezone @AMacHimself @danilic Absolutely due to ocean currents, this is pretty well established.

[Max Roser @MaxCRoser]

Last June was the warmest on record,
last July too,
last August too,
last September too,
last October too,
last November too,
last December too,
last January too,
and last February too.
https://t.co/o7gZ0GxpEy

[Neil Malan @NeilMalan]

Oof! The Kuroshio looking a bit toasty

[Marine heatwaves @marineheatwaves]

Sea temps across much of the global ocean are alarmingly high, with extensive MHW activity. However, coastal waters off Japan have been in a near-permanent MHW state for ~1 year. The current winter MHW is remarkable, with max intensity of >11 degC !!! #marineheatwaves #MHWs

[Marine heatwaves @marineheatwaves]

Sea temps across much of the global ocean are alarmingly high, with extensive MHW activity. However, coastal waters off Japan have been in a near-permanent MHW state for ~1 year. The current winter MHW is remarkable, with max intensity of >11 degC !!! #marineheatwaves #MHWs

[Neil Malan @NeilMalan]

Hey all #OSM2024 attendees - interested in subsurface marine heatwaves? Come and hear my thoughts in Great Hall A at 10:30 this morning

[Neil Malan @NeilMalan]

@JefimVogel @JKSteinberger @DrDanONeill @lamb_wf @jasonhickel @Robert_Costanza Woohoo!! Congrats Jefim

[Neil Malan @NeilMalan]

Thanks to @IMOS_AUS for the great data as usual

[Neil Malan @NeilMalan]

What does it all mean? With an increase in extreme rainfall expected in the future, we need to pay more attention to freshwater discharge in normally ‘dry’ areas such as eastern Australia.

[Neil Malan @NeilMalan]

To keep pace with a changing climate, and the expected increase in extreme events, we need to include freshwater discharge in our model simulations, and ensure our observe networks don’t neglect coastal salinity.

[The Conversation - Australia + New Zealand @ConversationEDU]

Floodwaters pulsing into the sea normally clear within six days, but the 2022 floods in eastern Australia were different.

It can leave a 50 metre thick layer of brown water in the sea – and cause real problems, write @NeilMalan + @moninya (@UNSW). https://t.co/H5LSjB9l2N

[Neil Malan @NeilMalan]

Gliders showed extreme low salinity waters extended more than 70km offshore and persisted for months. We observed a vertical double-stacking phenomena with two layers of fresher water extending deeper than 50m. Stratification was controlled by salinity rather than temperature.

[Neil Malan @NeilMalan]

It turns out it hangs around for a surprisingly long time.

We used a combination of moorings, gliders and remote sensing to define an observational extremes framework for salinity. This allowed us to track the extent and longevity of freshwater plumes associated with floodwaters