Comments (3)
I updated the heat transport code to bin the transport meridionally around the edge of the Ross sea, and in the East of the Antarctic Peninsula, and to calculate the meridional convergence in these locations. The new binning scheme separates the 1000m (gray contour) binning in three classes.
Blue= where the coast is mostly zonal, so we bin the heat transport zonally, and calculate zonal convergence of heat on the shelf to close the budget of heat fluxes on the shelf bin.
Red = Where the coast is mostly meridional (Antarctic Peninsula and loop in Ross sea isobath). I calculated the meridional convergence of heat on the shelf to close the budget of heat fluxes on the shelf bin.
Green = We have open isobath boundaries zonally (to the east of the Antarctic Peninsula) and meridionally (North of the Antarctic Peninsula). Here we have to calculate both the zonal convergence (Eastern incoming heat flux - West outgoing heat flux), and meridional convergence (Southern incoming heat flux - Northern outgoing heat flux). In this location we just have one bin to simplify the calculation.
Below are how the points are located in the new complex binning VS the older zonal binning. We gain some points along the Antarctic peninsula (and can now analyze local cross-slope heat transport there)
from asc_and_heat_transport.
Below are how the heat transport and convergence changes between the new and old binning scheme
It seems that on total the cross-slope heat transport, when adding the shelf convergence is the same [d], the only difference is that on the meridional coasts (Ross ~-170E, and AP ~-50W) the big jumps we had in heat transport are smaller when computing the meridional convergence ( you can see that in [b] too).
one important thing is the old (purely zonal) convergence amounts to almost 0 (~0.5 TW), while the new one (zonal + meridional) amounts to ~6TW. I would expect it to be close to 0 instead of bigger. So perhaps I have to re-tweak the limits used for calculating the meridional convergence for better closing the contour... or do you think having a total heat convergence different than 0 makes sense ? suggestions are welcome :)
from asc_and_heat_transport.
Closing issue.... We decided to stick to the Zonal convergence for these calculations. Whenever necessary, we can separate Antarctica in sectors to include the Antarctic Peninsula
from asc_and_heat_transport.
Related Issues (20)
- Cross-slope heat transport calculation method HOT 6
- Cross-slope heat transport using different methods to extract an isobath HOT 6
- Poster for IUGG
- Identifying ASC Regimes and variability HOT 45
- Zonal convergence bias in vertical profiles of CSHT HOT 6
- Analysis of individual sub-regimes HOT 6
- Alternative plots visualizations HOT 6
- Figure discussion for paper HOT 3
- Recreate figures with time-mean regime masks HOT 3
- Statistics using longitude bins before averaging over distinct ASC regimes HOT 29
- Depth normalisation HOT 21
- Reduce bin size when longitude-binning CSHT and U_along HOT 4
- Presenting these results at conferences HOT 11
- Missing data at longitude edges HOT 10
- Choice of vertical coordinate / depth range of importance HOT 6
- New visualisation of cross-slope properties in Antarctic margins? HOT 7
- Bining of ASC speed into sigma increase maximums HOT 4
- Defining sigma levels according to water mass properties HOT 10
- Explaining spatial variation of correlations in density space HOT 1
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