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MIT License | ||
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Copyright (c) 2023 K. Arthur Endsley | ||
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Permission is hereby granted, free of charge, to any person obtaining a copy | ||
of this software and associated documentation files (the "Software"), to deal | ||
in the Software without restriction, including without limitation the rights | ||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
copies of the Software, and to permit persons to whom the Software is | ||
furnished to do so, subject to the following conditions: | ||
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The above copyright notice and this permission notice shall be included in all | ||
copies or substantial portions of the Software. | ||
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
SOFTWARE. |
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MODIS MOD17 Terrestrial Productivity Algorithm | ||
============================================== | ||
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The MODIS MOD17 algorithm provided the first global, continuous, weekly estimates of ecosystem gross primary productivity (GPP) and annual estimates of net primary productivity (NPP). This source code can be used for comprehensive calibration, validation, sensitivity, and uncertainty analysis of the MOD17 algorithm. It was used by Endsley et al. (In Review) for the final recalibration of MODIS MOD17 and the development of a new, VIIRS-based VNP17 global productivity algorithm. | ||
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Installation | ||
------------ | ||
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Within the `MOD17` repository's root directory: | ||
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```sh | ||
pip install . | ||
``` | ||
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Tests can be run with: | ||
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```sh | ||
python tests/tests.py | ||
``` | ||
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Citation | ||
-------- | ||
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**If using this software, please cite the following paper:** | ||
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``` | ||
Endsley, K.A., M. Zhao, J.S. Kimball, S. Devadiga. In Review. Continuity of global MODIS terrestrial primary productivity estimates in the VIIRS era using model-data fusion. Journal of Geophysical Research: Biogeosciences. | ||
``` |
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h5py==3.4.0 | ||
netCDF4>=1.5.7 | ||
numpy<=1.21.5 | ||
scipy>=1.7.0 | ||
xarray>=0.19.0 | ||
suntransit>=0.1.0 | ||
tqdm>=4.60.0 | ||
matplotlib>=3.0.0 |
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UMD_VEG_LC ENF=0 EBF=1 DNF=2 DBF=3 MF=4 CShrub=5 OShrub=6 WSavannas=7 Savannas=8 Grass=9 Crop=10 | ||
LUEmax(KgC/m^2/d/MJ) 0.001211 0.001405 0.001227 0.001526 0.001226 0.001495 0.001027 0.001498 0.001454 0.001215 0.001300 | ||
Tmin_min(C) -8.00 -8.00 -8.00 -6.00 -7.00 -8.00 -8.00 -8.00 -8.00 -8.00 -8.00 | ||
Tmin_max(C) 8.31 9.09 10.44 9.94 9.50 8.61 8.80 11.39 11.39 12.02 12.02 | ||
VPD_min(Pa) 650.0 1000.0 650.0 650.0 650.0 650.0 650.0 650.0 650.0 650.0 650.0 | ||
VPD_max(Pa) 3000.0 4000.0 3500.0 2900.0 2900.0 4300.0 4400.0 3500.0 3600.0 4200.0 4500.0 | ||
SLA(LAI/KgC) 15.0 26.9 16.9 24.7 22.6 9.4 12.0 28.8 28.9 38.0 38.0 | ||
Q10(unitless) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 | ||
froot_leaf_ratio 1.2 1.1 1.7 1.1 1.1 1.0 1.3 1.8 1.8 2.6 2.0 | ||
livewood_leaf_ratio 0.182 0.162 0.165 0.203 0.203 0.079 0.040 0.091 0.051 0.000 0.000 | ||
leaf_mr_base(Kgc/KgC/d) 0.00604 0.00604 0.00815 0.00778 0.00778 0.00869 0.00519 0.00869 0.00869 0.0098 0.0098 | ||
froot_mr_base(Kgc/KgC/d) 0.00519 0.00519 0.00519 0.00519 0.00519 0.00519 0.00519 0.00519 0.00519 0.00819 0.00819 | ||
livewood_mr_base(Kgc/KgC/d) 0.00397 0.00397 0.00397 0.00371 0.00371 0.00436 0.00218 0.00312 0.00100 0.00000 0.00000 | ||
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*** Recalibrated by Maosheng Zhao before March 31st, 2009. Version is the improved Collection5.1 *** | ||
*** Note not add extra spaces between variable names and parentheses, otherwise it will be messed up when used by MOD17 program *** | ||
Below is the mean GPP and NPP from 2000 to 2006 estimated from 0.25 degree tuned BPLUT system of the C5.1, which will be used to | ||
tune new version of the global MOD17. The tuning tools are MOD17_improved_main_code_GEO.c and mean_GPP_NPP_tune_BPLUT.c | ||
UMD_VEG_LC ENF=0 EBF=1 DNF=2 DBF=3 MF=4 CShrub=5 OShrub=6 WSavannas=7 Savannas=8 Grass=9 Crop=10 | ||
GPP(gC/m^2/yr) 877.10 2702.62 727.21 1339.93 1133.22 812.04 308.83 1368.90 1208.90 393.25 884.11 | ||
NPP(gC/m^2/yr) 478.49 1175.45 343.55 622.79 604.82 381.50 160.14 673.06 594.73 205.86 486.46 |
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