Questions tagged [ocean-models]

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Oceanic-atmospheric coupling between the Indian Ocean and the Pacific Ocean basins

The two great basins - Indian Ocean and Pacific Ocean have their respective oscillations: Indian Ocean Dipole and El Nino Southern oscillation that affect the climate of the regions as well as the ...
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11 votes
2 answers
423 views

Are there any general-purpose climate-model coupling projects?

In climate modelling, there are three major model types that form the basis of a fully coupled Atmosphere-Ocean General Circulation Model (AOGCM): Atmosphere circulation models Ocean circulation ...
naught101's user avatar
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9 votes
2 answers
366 views

How does heat get transported between the surface layer, twilight zone, and the deep ocean?

Just as importantly, how do we measure the heat that's transported from the surface layer into the twilight zone and deep oceans?
InquilineKea's user avatar
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8 votes
3 answers
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What exactly is a model grid?

I have just begun reading some notes about modelling and can't seem to understand what a 1°x1° grid or a 2.5° grid or 1/4° grid is. I know it is something related to the resolution of the area over ...
Darkgod's user avatar
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8 votes
1 answer
523 views

How do I start with Modular Ocean Model version 6 i.e. MOM6 on my ubuntu linux machine?

I am learning ocean modelling and have started with MOM6. I needed guidance on where to start from and how to run the model on my local machine (Ubuntu) to perform various tasks such as regridding or ...
tech_climate's user avatar
7 votes
1 answer
72 views

What is the mean amount (in grams) of dissolved carbon in a ton of sea water?

What is the mean amount (in grams) of dissolved carbon in a ton of sea water ? The value I want is the concentration value in say the first two metres of surface water (A distribution of this ...
Nyny's user avatar
  • 191
7 votes
1 answer
488 views

Ship turning causing calm water

Can anyone tell me the official or technical term for the effect of when extremely calm water appears when a ship turns sharply in a full circle? I realise it could be related to wakes, but is not a ...
Richard's user avatar
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7 votes
1 answer
447 views

How will global warming affect climate systems like the ENSO or the MJO?

How will global warming influence climate systems such as the Madden–Julian Oscillation (MJO) or the El Niño Southern Oscillation (ENSO)?
James's user avatar
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7 votes
0 answers
87 views

Why does the wake of boats leave a long lasting print on the sea surface?

A picture is better than a long explanation. The boat is long gone but its wake is visible for a very long time and forms a pattern looking like a trail on the sea surface. The two lines are not even ...
Shaktyai's user avatar
  • 171
6 votes
0 answers
711 views

Calculating fetch

I am currently using a Pierson Moskowitz spectrum to model the wave energy in the Mediterranean Sea. However I don't think this this is appropriate due to the limited fetch in the coastal area that I'...
RH_data_maths's user avatar
5 votes
2 answers
988 views

Half of Earth with most landmass

About 71% of the Earth's surface is covered with water and the remaining 29% is landmass*. If you could theoretically cut the planet in half, with the objective of producing a half with the most ...
Gabe12's user avatar
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5 votes
2 answers
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How to install ESMF and ESMFPy in Ubuntu using gfortran, gcc, python?

I am trying to regrid some of my latitude-longitude grid files to tripolar ocean grid and found that ESMF can be useful. However, I am finding it hard to install the same.
tech_climate's user avatar
5 votes
0 answers
85 views

Ocean oscillations with long time periods

I heard that some ocean oscillations act on a time scale of a millennium. Is this true, or at least argued by some oceanographers? If so, what are they and what causes them? If not, what are the ...
Peter A's user avatar
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5 votes
0 answers
476 views

Does the Labrador current affect North Atlantic climate?

This summer has seen very low sea surface temperature anomalies in the North Atlantic. Using animations of these over the last year I feel the runoff of freshwater from Hudson Bay, into the Labrador ...
acidohm's user avatar
  • 45
4 votes
1 answer
154 views

A problem of the 2-Layer hydrostatic model

The 2-layer hydrostatic model is like this And the pressure of the two layers and the top are and it is easy to find the horizontal gradient of $p_1$ and $p_2$ \begin{equation} \begin{aligned} \nabla ...
 Hou's user avatar
  • 103
4 votes
1 answer
363 views

Best book/s of oceanic data treatment and analysis?

I would like to purchase a/some books which are really good and practical references to get into the oceanic data (wave heights,currents and sea level) treatment and statistical analysis, coming from ...
glopezluzzatti's user avatar
4 votes
0 answers
219 views

Which currents are counted as AMOC in the North Atlantic and which are not?

This question is related to this question. I am currently trying to understand which currents in the North Atlantic are counted as part of the AMOC: I am sure about the currents: N. Atlantic current ...
Weiss's user avatar
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4 votes
0 answers
57 views

What does this reference velocity refer to? (Atmosphere-Ocean Momentum Exchange)

The above image is taken from "Atmosphere–Ocean Momentum Exchange in General Circulation Models", John A.T.Bye 1999. It represents the inertial coupling concept between the atmosphere and ocean. It ...
PleasureTheory420's user avatar
3 votes
1 answer
287 views

SWAN wave model: HSIG is strangely low

I have a question about SWAN wave model, I tried to ask it at the SWAN mailing list, but with no luck, so I'm asking here. First of all I have to admit I'm not a professional SWAN user. All the ...
Xanx's user avatar
  • 83
3 votes
1 answer
133 views

Global tide calculation

I am familiar with the concept of harmonic tide coefficients and was wondering about the simplest software solution to calculate tides anywhere, worldwide. Are there any available, open source ...
El Dude's user avatar
  • 161
3 votes
2 answers
363 views

How large were Mars' ocean tides and to what extent could they keep the oceans mixing and tend to keep salinity uniform? Has this been modeled?

This answer to Salinity of Martian water 3.5 Billion years ago in Astronomy says that most estimates of Mars' ocean's salinity are pretty high; The article "Water Activity and the Challenge for ...
uhoh's user avatar
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3 votes
0 answers
45 views

Since the upwelling of calcium carbonate reduces surface pCO2, why is its dissolution in the CCD below the lysocline of concern?

Why is so much of the literature I run across regarding global warming concerned with precipitating $\ce{CaCO3}$ to the ocean floor? In areas of relatively lower pH, such as the eastern equatorial ...
James Bowery's user avatar
2 votes
2 answers
591 views

Is Challenger Deep really the deepest place in the ocean?

We have all been told at some point that the Mariana Trench is the deepest place in the ocean, but is that really true? More than 80% of the world's oceans are unexplored, so couldn't there be a much ...
Heath Pitt's user avatar
2 votes
2 answers
151 views

Modelling sea levels with gravitational parameters

Are there any publicly available programs or source code for modelling global (or local) changes in sea level which include parameters for gravitational tidal effects? I have a physics background, ...
Geoffrey's user avatar
  • 123
2 votes
1 answer
101 views

Can phytoplankton growth be stimulated in oceans to sequester CO2?

Casual learner only. Decades ago, I read, one ocean scientist stated, jokingly, probably, "Give me half a shipload of iron filings and I will give you another ice age." This was in response ...
user29910's user avatar
2 votes
0 answers
49 views

Examining thermohaline circulation first with just temperature differences

This is a set of differential equations originally produced by Stommel (1961) has been simplified in this source (https://serc.carleton.edu/integrate/teaching_materials/earth_modeling/...
AAAA's user avatar
  • 85
2 votes
0 answers
59 views

Understanding the parameters in Stommel's Two-Box Model (a model of ocean circulation based on temperature and salinity)

I was redirected here from the mathematics StackExchange I am trying to wrap my head around Stommel's Two-Box Model of ocean circulation (specifically of the North Atlantic). The general idea of this ...
M.A.'s user avatar
  • 21
2 votes
1 answer
131 views

Gulf stream depth and Ekman's theory

The Gulf Stream is said to be Largely driven by wind stress, and Up to 1000 m deep. At the same time, I am reading that the effect of the wind usually does not reach deeper than 100 m in Ekman ...
shamiv's user avatar
  • 123
2 votes
0 answers
28 views

Velocity boundary conditions from water depth time series

Currently, I am setting up a hydrodynamic model for a coastal zone. For this purpose I need to impose the velocity and water level at the open boundary. Tidal models (e.g. TPXO) can give both velocity ...
Rik's user avatar
  • 133
2 votes
0 answers
40 views

What is the relationship between Ekman transport and volume transport?

Ekman transport components are in the zonal and meridional direction. Along the coast of California, which is an eastern boundary coast, say there is wind flowing down the coast in the meridional ...
milo2022's user avatar
2 votes
0 answers
67 views

ESMF installation error "error: no match for ‘operator==’ "

I need to install ESMF-5.2.0rp3 version. I have downloaded it from https://github.com/esmf-org/esmf/releases/tag/ESMF_5_2_0rp3. Also I installed the following prerequisites: Fortran95, GCC & C++ 7....
AKASH's user avatar
  • 21
1 vote
1 answer
61 views

Swell spectrum and wind spectrum

While modelling both wind waves and swell waves, whether we have to add both spectra or append wind spectra in swell spectra? Because swell spectra has high amplitude values but wind spectra has very ...
M.Shanmuga sundari's user avatar
1 vote
1 answer
43 views

Regional and Relative Sea level

I am a little confused by the terms "regional" and "relative" in the sea level change context. Do the two words have the same meaning? Does the "regional MSL trend" in https://www.aviso.altimetry.fr/...
Rizki Nandika's user avatar
1 vote
0 answers
17 views

conserving mass while converting sigma levels to geopotential (z-levels)

I am using a sigma-level ocean model, so that I have dh (layer thicknesses), salinity and bathymetry (bottom depth) for some area (lon-lat box). Now, I would like to calculate the amount of salt at ...
msi_gerva's user avatar
  • 111
1 vote
0 answers
60 views

Why does weaker local gravity cause lower sea level?

The weaker local gravity in the Indian Ocean geoid low (IOGL) causes the sea level to be 106 m below the global mean sea level. Why is that ? "Because of this lower density, the gravitational ...
summerrain's user avatar
1 vote
0 answers
14 views

How to change the whitecapping coefficient Cds in Delft-Wave

I have worked about the wave calibration in these days, and I met a problem that the significant wave height from Delft-WAVE is much lower than the observation data. I have searched for ways from the ...
TUOTUO's user avatar
  • 11
1 vote
0 answers
53 views

Finding vessel and wave's angle of attack [closed]

I am finding angle between ship's heading and component in wave (wave's angle of attack), not sure if ES is a right place to ask this type of question. Should it be the difference between mean wave ...
Ewok The Sith Lord's user avatar
1 vote
0 answers
56 views

Should I get my master's in Environmental Science or Environmental Engineering given a Computer Science background? [closed]

I'm currently a Computer Science undergraduate at Georgia Tech. I have ~3.5 GPA, and I want to become a data scientist for the NOAA or a similar organization concerning the acidification of the oceans....
dirtysocks45's user avatar
0 votes
0 answers
11 views

Wind direction and wave number of swell and wind waves

Whether swell and wind waves have same wind direction or it may have different wind direction? what is the wave number range of swell waves and wind waves. Thanks in advance.
M.Shanmuga sundari's user avatar