The scripts in this repository ARS-SWRC/Gridded-CLIGEN-Processing are used to calculate CLIGEN input parameters directly from global climate datasets. Bias adjustments for the resulting parameter values are not currently part of this code. The scripts only require a GEE asset representing point geometries. To create this asset, make_grid_point_asset.py may be used to get grid points at the resolution of selected climate products for clipped regions.
- Create Google Earth Engine code to calculate CLIGEN input parameters.
- Test possibilities for optimizing the code to reduce run-time.
- Run the code for large regions.
| Description | Path | n | Resolution |
|---|---|---|---|
| Northern Latitude Band Grid | ("users/andrewfullhart/Northern_ERA_Grid") | 114951 | 0.25 arc deg |
| Southern Latitude Band Grid | ("users/andrewfullhart/Southern_ERA_Grid") | 37105 | 0.25 arc deg |
| Parameter | Label | Script | Climate Product | Band |
|---|---|---|---|---|
| Mean of daily precip. for "wet" days in the month | MEAN P | precip_daily_variables.py | ERA5 ("ECMWF/ERA5/DAILY") | total_precipitation |
| Standard deviation of daily precip. for "wet" days in the month | S DEV P | precip_daily_variables.py | ERA5 ("ECMWF/ERA5/DAILY") | total_precipitation |
| Skewness of daily precip. for "wet" days in the month | SKEW P | precip_daily_variables.py | ERA5 ("ECMWF/ERA5/DAILY") | total_precipitation |
| Transition probability of a wet day given a wet day | P(W/W) | precip_daily_variables.py | ERA5 ("ECMWF/ERA5/DAILY") | total_precipitation |
| Transition probability of a wet day given a dry day | P(W/D) | precip_daily_variables.py | ERA5 ("ECMWF/ERA5/DAILY") | total_precipitation |
| Maximum 30-min intensity in month averaged by years | MX.5P | intensity_subdaily_variable.py | GPM ("NASA/GPM_L3/IMERG_V06") | precipitationCal |
| Time-to-peak-intensity cumulative probability dist. | TimePk | - | - | - |
| Mean of maximum daily temperature | TMAX AV | temp_daily_variables.py | ERA5 ("ECMWF/ERA5/DAILY") | maximum_2m_air_temperature |
| Mean of minimum daily temperature | TMIN AV | temp_daily_variables.py | ERA5 ("ECMWF/ERA5/DAILY") | minimum_2m_air_temperature |
| Standard deviation of maximum daily temperature | SD TMAX | temp_daily_variables.py | ERA5 ("ECMWF/ERA5/DAILY") | maximum_2m_air_temperature |
| Standard deviation of minimum daily temperature | SD TMIN | temp_daily_variables.py | ERA5 ("ECMWF/ERA5/DAILY") | minimum_2m_air_temperature |
| Mean of Daily Incoming Solar Radiation | SOL.RAD | solrad_daily_variables.py | GLDAS ("NASA/GLDAS/V021/NOAH/G025/T3H") | SWdown_f_tavg |
| Standard Deviation of Daily Incoming Solar Radiation | SD SOL | solrad_daily_variables.py | GLDAS ("NASA/GLDAS/V021/NOAH/G025/T3H") | SWdown_f_tavg |
| Various Wind Parameters | - | - | - | - |