crop_coefficients__fao56 Module Reference

Update crop coefficients for crop types in simulation. More...

Enumerations
enum	{   l_doy_ini =1 , l_doy_dev , l_doy_mid , l_doy_late ,   l_doy_fallow }
enum	{   gdd_plant =1 , gdd_ini , gdd_dev , gdd_mid ,   gdd_late }
enum	{   planting_date =1 , enddate_ini , enddate_dev , enddate_mid ,   enddate_late , enddate_fallow }
enum	{ kcb_ini =13 , kcb_mid , kcb_end , kcb_min }
enum	{   jan = 1 , feb , mar , apr ,   may , jun , jul , aug ,   sep , oct , nov , dec }
enum	{ kcb_method_gdd = 1 , kcb_method_monthly_values , kcb_method_fao56 }

Functions/Subroutines
type(datetime_t) function	crop_coefficients_calculate_planting_date (splantingdate, iyear)
subroutine, public	crop_coefficients_fao56_initialize ()
impure elemental real(c_float) function, public	update_crop_coefficient_date_as_threshold (ilanduseindex)
	Update the current basal crop coefficient (Kcb) for a SINGLE irrigation table entry.
pure elemental real(c_float) function, public	crop_coefficients_fao56_calculate_kcb_max (wind_speed_meters_per_sec, relative_humidity_min_pct, kcb, plant_height_meters)
impure elemental real(c_float) function, public	update_crop_coefficient_gdd_as_threshold (ilanduseindex, fgdd)
	Update the current basal crop coefficient (Kcb), with GDD as the threhold.
subroutine, public	crop_coefficients_fao56_update_growth_stage_dates ()
impure elemental subroutine, public	crop_coefficients_fao56_calculate (kcb, landuse_index, gdd)
impure elemental subroutine, public	crop_coefficients_fao56_update_growing_season (landuse_index, kcb, it_is_growing_season)

Variables
integer(c_int), dimension(:), allocatable	landuse_code
real(c_float), dimension(:,:), allocatable, public	kcb_l
integer(c_int), dimension(:), allocatable, public	kcb_method
real(c_float), dimension(:,:), allocatable, public	growth_stage_length_in_days
real(c_float), dimension(:,:), allocatable	growth_stage_gdd
type(datetime_t), dimension(:,:), allocatable, public	growth_stage_date
type(fstring_list_t)	sl_planting_date

Detailed Description

Update crop coefficients for crop types in simulation.

Enumeration Type Documentation

anonymous enum

anonymous enum

private

Enumerator
l_doy_ini
l_doy_dev
l_doy_mid
l_doy_late
l_doy_fallow

Definition at line 37 of file crop_coefficients__fao56.F90.

anonymous enum

anonymous enum

private

Enumerator
gdd_plant
gdd_ini
gdd_dev
gdd_mid
gdd_late

Definition at line 41 of file crop_coefficients__fao56.F90.

anonymous enum

anonymous enum

private

Enumerator
planting_date
enddate_ini
enddate_dev
enddate_mid
enddate_late
enddate_fallow

Definition at line 45 of file crop_coefficients__fao56.F90.

anonymous enum

anonymous enum

private

Enumerator
kcb_ini
kcb_mid
kcb_end
kcb_min

Definition at line 50 of file crop_coefficients__fao56.F90.

anonymous enum

anonymous enum

private

Enumerator
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec

Definition at line 54 of file crop_coefficients__fao56.F90.

anonymous enum

anonymous enum

private

Enumerator
kcb_method_gdd
kcb_method_monthly_values
kcb_method_fao56

Definition at line 58 of file crop_coefficients__fao56.F90.

Function/Subroutine Documentation

crop_coefficients_calculate_planting_date()

type (datetime_t) function crop_coefficients__fao56::crop_coefficients_calculate_planting_date ( character(len=*), intent(in) splantingdate, integer (c_int), intent(in) iyear )

private

Definition at line 77 of file crop_coefficients__fao56.F90.

crop_coefficients_fao56_calculate()

impure elemental subroutine, public crop_coefficients__fao56::crop_coefficients_fao56_calculate	(	real (c_float), intent(inout)	kcb,
		integer (c_int), intent(in)	landuse_index,
		real (c_float), intent(in), optional	gdd )

Definition at line 659 of file crop_coefficients__fao56.F90.

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crop_coefficients_fao56_calculate_kcb_max()

pure elemental real (c_float) function, public crop_coefficients__fao56::crop_coefficients_fao56_calculate_kcb_max	(	real (c_float), intent(in)	wind_speed_meters_per_sec,
		real (c_float), intent(in)	relative_humidity_min_pct,
		real (c_float), intent(in)	kcb,
		real (c_float), intent(in)	plant_height_meters )

Definition at line 465 of file crop_coefficients__fao56.F90.

crop_coefficients_fao56_initialize()

subroutine, public crop_coefficients__fao56::crop_coefficients_fao56_initialize

create string list that allows for alternate heading identifiers for the landuse code

Determine how many landuse codes are present

Todo

Implement thorough input error checking: are all soils in grid included in table values? is soil suffix vector continuous?

@TODO What should happen if the TEW / REW header entries do not fall in a logical sequence of values? In other words, if the user has columns named REW_1, REW_3, REW_5, only the values associated with "REW_1" would be retrieved. Needless to say, this would be catastrophic.

@TODO Add more logic here to perform checks on the validity of this data.

@TODO Need to handle missing values. WHat do we do if an entire column of values is missing?

Definition at line 100 of file crop_coefficients__fao56.F90.

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crop_coefficients_fao56_update_growing_season()

impure elemental subroutine, public crop_coefficients__fao56::crop_coefficients_fao56_update_growing_season	(	integer (c_int), intent(in)	landuse_index,
		real (c_float), intent(in)	kcb,
		logical (c_bool), intent(out)	it_is_growing_season )

Definition at line 681 of file crop_coefficients__fao56.F90.

crop_coefficients_fao56_update_growth_stage_dates()

subroutine, public crop_coefficients__fao56::crop_coefficients_fao56_update_growth_stage_dates

Definition at line 568 of file crop_coefficients__fao56.F90.

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update_crop_coefficient_date_as_threshold()

impure elemental real (c_float) function, public crop_coefficients__fao56::update_crop_coefficient_date_as_threshold

(

integer (c_int), intent(in)

ilanduseindex

)

Update the current basal crop coefficient (Kcb) for a SINGLE irrigation table entry.

Parameters

[in,out]	pIRRIGATION	pointer to a single line of information in the irrigation file.
[in]	iThreshold	either the current day of year or the number of growing degree days.

Return values

rKcb	Basal crop coefficient given the irrigation table entries and the current threshold values.

Definition at line 397 of file crop_coefficients__fao56.F90.

update_crop_coefficient_gdd_as_threshold()

impure elemental real (c_float) function, public crop_coefficients__fao56::update_crop_coefficient_gdd_as_threshold	(	integer (c_int), intent(in)	ilanduseindex,
		real (c_float), intent(in)	fgdd )

Update the current basal crop coefficient (Kcb), with GDD as the threhold.

Parameters

[in]

fGDD

current growing degree day value associated with the cell.

Return values

fKcb	Basal crop coefficient given the irrigation table entries and the current threshold values.

Definition at line 502 of file crop_coefficients__fao56.F90.

Variable Documentation

growth_stage_date

type (datetime_t), dimension(:,:), allocatable, public crop_coefficients__fao56::growth_stage_date

Definition at line 71 of file crop_coefficients__fao56.F90.

growth_stage_gdd

real (c_float), dimension(:,:), allocatable crop_coefficients__fao56::growth_stage_gdd

private

Definition at line 70 of file crop_coefficients__fao56.F90.

growth_stage_length_in_days

real (c_float), dimension(:,:), allocatable, public crop_coefficients__fao56::growth_stage_length_in_days

Definition at line 69 of file crop_coefficients__fao56.F90.

kcb_l

real (c_float), dimension(:,:), allocatable, public crop_coefficients__fao56::kcb_l

Definition at line 67 of file crop_coefficients__fao56.F90.

kcb_method

integer (c_int), dimension(:), allocatable, public crop_coefficients__fao56::kcb_method

Definition at line 68 of file crop_coefficients__fao56.F90.

landuse_code

integer (c_int), dimension(:), allocatable crop_coefficients__fao56::landuse_code

private

Definition at line 64 of file crop_coefficients__fao56.F90.

sl_planting_date

type (fstring_list_t) crop_coefficients__fao56::sl_planting_date

private

Definition at line 72 of file crop_coefficients__fao56.F90.