climada_petals.entity.impact_funcs package

climada_petals.entity.impact_funcs.drought module

class climada_petals.entity.impact_funcs.drought.ImpfDrought

Bases: climada.entity.impact_funcs.base.ImpactFunc

Impact function for droughts.

__init__()

Empty initialization.

Parameters

• impf_id (int, optional) – impact function id. Default: 1

• intensity (np.array, optional) – intensity array SPEI [-]. default: intensity defintion 1 (minimum) default_sum: intensity definition 3 (sum over all drought months)

Raises

ValueError –

set_default(*args, **kwargs)

This function is deprecated, use ImpfDrought.from_default instead.

set_default_sum(*args, **kwargs)

This function is deprecated, use ImpfDrought.from_default_sum instead.

set_default_sumthr(*args, **kwargs)

This function is deprecated, use ImpfDrought.from_default_sumthr instead.

set_step(*args, **kwargs)

This function is deprecated, use ImpfDrought.from_step instead.

classmethod from_default()

Returns

impf – Default impact function.

Return type

ImpfDrought

classmethod from_default_sum()

Returns

impf – Default sum impact function.

Return type

ImpfDrought

classmethod from_default_sumthr()

Returns

impf – Default sum threshold impact function.

Return type

ImpfDrought

classmethod from_step()

Returns

impf – step impact function.

Return type

ImpfDrought

climada_petals.entity.impact_funcs.relative_cropyield module

class climada_petals.entity.impact_funcs.relative_cropyield.ImpfRelativeCropyield

Bases: climada.entity.impact_funcs.base.ImpactFunc

Impact functions for agricultural droughts.

__init__()

Empty initialization.

set_relativeyield(*args, **kwargs)

This function is deprecated, use ImpfRelativeCropyield.impf_relativeyield instead.

classmethod impf_relativeyield()

Impact functions defining the impact as intensity

Returns

impf

Return type

climada.entity.impact_funcs.ImpfRelativeCropyield instance

climada_petals.entity.impact_funcs.river_flood module

class climada_petals.entity.impact_funcs.river_flood.ImpfRiverFlood

Bases: climada.entity.impact_funcs.base.ImpactFunc

Impact functions for tropical cyclones.

__init__()

Empty initialization.

classmethod from_region(region)

Create a new ImpfRiverFlood object with parameters for the specified world region.

Parameters

region (str) – Use damage function parameters for this world region. Supported values: “Africa”, “Asia”, “Europe”, “NorthAmerica”, “Oceania”, “SouthAmerica”.

Returns

impf – New ImpfRiverFlood object with parameters for the specified world region.

Return type

ImpfRiverFlood

Raises

ValueError –

set_RF_Impf_Africa(*args, **kwargs)

This function is deprecated, use ImpfRiverFlood.from_region instead.

set_RF_Impf_Asia(*args, **kwargs)

This function is deprecated, use ImpfRiverFlood.from_region instead.

set_RF_Impf_Europe(*args, **kwargs)

This function is deprecated, use ImpfRiverFlood.from_region instead.

set_RF_Impf_NorthAmerica(*args, **kwargs)

This function is deprecated, use ImpfRiverFlood.from_region instead.

set_RF_Impf_Oceania(*args, **kwargs)

This function is deprecated, use ImpfRiverFlood.from_region instead.

set_RF_Impf_SouthAmerica(*args, **kwargs)

This function is deprecated, use ImpfRiverFlood.from_region instead.

climada_petals.entity.impact_funcs.wildfire module

class climada_petals.entity.impact_funcs.wildfire.ImpfWildfire(haz_type='WFsingle')

Bases: climada.entity.impact_funcs.base.ImpactFunc

Impact function for wildfire.

__init__(haz_type='WFsingle')

Empty initialization.

classmethod from_default_FIRMS(i_half=295.01, impf_id=1)

This function sets the impact curve to a sigmoid type shape, as common in impact modelling. We adapted the function as proposed by Emanuel et al. (2011) which hinges on two parameters (intercept (i_thresh) and steepness (i_half) of the sigmoid).

\[f = \frac{i^{3}}{1+i^{3}}\]

with

\[i = \frac{MAX[(i_{lat, lon}-i_{thresh}), 0]}{i_{half}-i_{thresh}}\]

The intercept is defined at the minimum intensity of a FIRMS value (295K) which leaves the steepness (i_half) the only parameter that needs to be calibrated.

Here, i_half is set to 295 K as a result of the calibration performed by Lüthi et al. (in prep). This value is suited for an exposure resolution of 1 km.

Calibration was further performed for:

• 4 km: resulting i_half = 409.4 K

• 10 km: resulting i_half = 484.4 K

Calibration has been performed globally (using EMDAT data) and is based on 84 damage records since 2001.

Intensity range is set between 295 K and 500 K as this is the typical range of FIRMS intensities.

Parameters

• i_half (float, optional, default = 295.01) – steepnes of the IF, [K] at which 50% of max. damage is expected

• if_id (int, optional, default = 1) – impact function id

Returns

Impf

Return type

climada.entity.impact_funcs.ImpfWildfire instance

set_default_FIRMS(*args, **kwargs)

This function is deprecated, use ImpfWildfire.from_default_FIRMS instead.