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TNC-NMFO / NWLAND

carbon accounting model
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Revised Climate Scalars #89

Closed sbassett closed 2 years ago

sbassett commented 2 years ago

https://esgf-node.llnl.gov/search/cmip6/ CMIP6.ScenarioMIP.NCAR.CESM2-WACCM ssp245 ssp585

cShrub cTree cSoil 1m

image

sbassett commented 2 years ago

Increased productivity under climate change? These are 8.5 for tree tiles only. image image

This makes sense if growing season increases. Note the lower elevations have a big decrease in NPP.

I think some form of interpolation will be useful to more realistically present "winners and losers".

sbassett commented 2 years ago

Search here: https://esgf-node.llnl.gov/search/cmip6/ Experiment ID ssp245 (113) ssp585 (63)

CF Standard Name carbon mass in soil pool above 1m depth (37) net primary production on shrub tiles (33) net primary production on shrub tiles as carbon mass flux [kgc m-2 s-1] (14) net primary production on tree tiles (48) net primary production on tree tiles as carbon mass flux [kgc m-2 s-1] (14) soil carbon content (30)

sbassett commented 2 years ago

Need to fill zeros in 5-year running averages before calculating the scalar. Can also replace zeros with slightly non-zero.

How do gaps in the data affect the output in CALAND?

sbassett commented 2 years ago

Because we're using CNRM-ESM2-1 for the burned area estimates I'm inclined to use the same model for soil flux and npp climate scalars.

Primary and Secondary LUT used to define vegetation NPP. LUT=1 per https://www.agci.org/sites/default/files/pdfs/lib/main/19s4_09_16_0945_lawrence.LUMIP_.AGCI_.2019%20%282%29.pdf

npp reported in "kg m-2 s-1" do I need to convert from rate to something else?

"kg m-2 y-1" computed by summing the per-second rate per month by total seconds in each month

9-year averages calculated for each year to remove interannual variability

these running average annual rates converted to scalars by dividing the value for each year by the value for year 2021.

Soil stocks were converted to january 1 to january 1 change in stock. Attributing that change to the first year. [so the change between Jan 1 2020 and Jan 1 2021 is attributed to the year 2020]

For both soil and veg, data accessed in netCDF, split out to monthly estimates using https://support.esri.com/en/technical-article/000011318.

sbassett commented 2 years ago

Added with https://github.com/TNC-NMFO/NWLAND/commit/8da393b4fa1b4cdfe5092f975ef1a55d67d5cd6c

sbassett commented 2 years ago

There may still be a need to remove the water and ice landcovers for the vegetation scalars.