Alastair Bain McDonald

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Questions related from Alastair Bain McDonald

Does anyone know of a model which explains the rapid warming accompaning Heinrich Events?

Heinrich events occurred when iceberg armadas mostly from the Laurentian ice sheet spread across the north Atlantic depositing ice-rafted detritus (IRD) on the seafloor. It is argued that when...

19 January 2022 4,587 7 View

How much acid do I need to convert a basic solution into an acidic soluion?

Assuming that there are no chemical buffers present, can anyone confirm that if I want to convert the pH of a basic solution to the pH of an acidic solution then the amount of a monoprotic acid...

28 October 2020 9,403 7 View

Why is the conservative nature of DIC and alkalinity important?

It has been shown that oceanic dissolved inorganic carbon (DIC) and alkalinity are conservative. Why does this matter? How does it affect climate models?

30 April 2020 9,018 0 View

How is it determined that methane is a more powerful greenhouse gas than carbon dioxide?

In the latest issue of Science mag it says: "Methane is about 86 times more powerful as a greenhouse gas than carbon dioxide over a 20 year time period ..." [Dean, Joshua F., 2020, "Old methane...

24 February 2020 8,570 8 View

What happens when two excited molecules collide?

When two excited carbon dioxide molecules collide will one of them emit a photon, or will both? As I understand it, collisions between two molecules can result in one becoming excited, or an...

18 October 2019 1,425 3 View

Where can I find the solubity products for calcium silicates?

Wollastonite has the chemical formula CaSiO3 and so should dissolve in water to produce Ca2+ and SiO32- ions i.e.: CaSiO3 Ca2+ + SiO32- Is this true? I suspect the reaction actually...

04 April 2019 928 9 View

What would be the depth of a layer of carbon dioxide if it was all at the surface of the Earth?

John Koch measured the absorption of pure carbon dioxide in tubes up to 387 cm long. How does this compare with the amount of absorption by the atmosphere? Is there a formula which would relate...

16 January 2019 3,476 5 View

Does the pH of the Atlantic, Pacific and Indian oceans differ?

Does anyone know of a site where I can find the pH of ocean waters in various oceans and at various depths?

24 May 2018 8,185 12 View

Is this your solution?

Have you considered the possibility that as an ice sheet advances it pushes molten mantle ahead of it, raising the land? By the time the ice sheet retreats, the uplifted molten mantle has...

10 November 2017 1,205 10 View

Who first proposed the equation for the formation of biogenic carbonate?

The chemical equation: Ca2+ + 2HCO3- = CaCO3 + CO2 + H2O is often quoted as the equation for the formation of biogenic calcium carbonate. Does anyone know its history or who first proposed this...

15 August 2017 2,249 10 View