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EM Identity and Description

EM ID variable.detail.emIdHelp ?	EM-448
Document Author variable.detail.emDocumentAuthorHelp ?	Yee, S. H., Dittmar, J. A., and L. M. Oliver
Document Year variable.detail.emDocumentYearHelp ?	2014

Variable General Info

Name variable.detail.varNameHelp ?	Wave height attenuation ? Comment: Wave height attenuation is computed by a separate model in which reef friction is associated with the degree of topography over the reef flat. Three options for calculating friction were provided in the paper. 1st: The percent cover of benthic habitat within each cell, in particular live coral or uneroded dead coral, can be used to define fw from 0.08 to 0.20. This option and these values are used here for this model. The two other options are: 2nd: Coral reef habitat can be categorized into four broad classes to assign values to parameters and estimate wave energy attenuation by reef type (fw 0.14 to 0.18). 3rd: Estimates of reef rugosity or variability in coral heights along the reef can be used to more directly estimate fw.	Gravitational acceleration	Seawater density	Wave energy attenuation ? Comment: Wave energy attenuation uses the variable wave height attenuation which is computed by a separately in which reef friction is associated with the degree of topography over the reef flat. Three options for calculating friction were provided in the paper. 1st: The percent cover of benthic habitat within each cell, in particular live coral or uneroded dead coral, can be used to define fw from 0.08 to 0.20. This option and these values are used here for this model. The two other options are: 2nd: Coral reef habitat can be categorized into four broad classes to assign values to parameters and estimate wave energy attenuation by reef type (fw 0.14 to 0.18). 3rd: Estimates of reef rugosity or variability in coral heights along the reef can be used to more directly estimate fw.
Variable ID variable.detail.varIdHelp ?	9584	9581	9585	9586
Symbol variable.detail.varSymbolHelp ?	H	g	p	E
Qualitative-Quantitative variable.detail.continuousCategoricalHelp ?	Quantitative (Cardinal Only)	Quantitative (Cardinal Only)	Quantitative (Cardinal Only)	Quantitative (Cardinal Only)
Cardinal-Ordinal variable.detail.cardinalOrdinalHelp ?	Cardinal	Cardinal	Cardinal	Cardinal
Units variable.detail.varUnitsHelp ?	%	m s^-2	kg m^-3	%

Variable Typology

Name variable.detail.varNameHelp ?	Wave height attenuation ? Comment: Wave height attenuation is computed by a separate model in which reef friction is associated with the degree of topography over the reef flat. Three options for calculating friction were provided in the paper. 1st: The percent cover of benthic habitat within each cell, in particular live coral or uneroded dead coral, can be used to define fw from 0.08 to 0.20. This option and these values are used here for this model. The two other options are: 2nd: Coral reef habitat can be categorized into four broad classes to assign values to parameters and estimate wave energy attenuation by reef type (fw 0.14 to 0.18). 3rd: Estimates of reef rugosity or variability in coral heights along the reef can be used to more directly estimate fw.	Gravitational acceleration	Seawater density	Wave energy attenuation ? Comment: Wave energy attenuation uses the variable wave height attenuation which is computed by a separately in which reef friction is associated with the degree of topography over the reef flat. Three options for calculating friction were provided in the paper. 1st: The percent cover of benthic habitat within each cell, in particular live coral or uneroded dead coral, can be used to define fw from 0.08 to 0.20. This option and these values are used here for this model. The two other options are: 2nd: Coral reef habitat can be categorized into four broad classes to assign values to parameters and estimate wave energy attenuation by reef type (fw 0.14 to 0.18). 3rd: Estimates of reef rugosity or variability in coral heights along the reef can be used to more directly estimate fw.
Predictor-Intermediate-Response variable.detail.displayVariableTypeHelp ?	Predictor	Predictor	Predictor	Response
Predictor Variable Type variable.detail.displayPredictorVariableTypeHelp ?	Time- or Space-varying Variable	Constant or Parameter	Constant or Parameter	Not applicable
Response Variable Type variable.detail.resClassHelp ?	Not applicable	Not applicable	Not applicable	Computed Variable
Data Source/Type variable.detail.dataTypeHelp ?	Derived as output of another model (and not found in a widely available database)	Transferred Values (e.g., from literature; transferred spatially, temporally or across scales)	Transferred Values (e.g., from literature; transferred spatially, temporally or across scales)	Not applicable
Variable Classification Hierarchy variable.detail.vchLevel1Help ?	5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services	N. Not classified	5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services	5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services
	--Physical/chemical characteristics of nonliving ecosystem components		--Physical/chemical characteristics of nonliving ecosystem components	--Physical/chemical characteristics of nonliving ecosystem components
	----Physical/chemical characteristics of water		----Physical/chemical characteristics of water	----Physical/chemical characteristics of water
	------Water volume or flow in coastal aquatic systems		------Other, multiple, unspecified or unclear	------Water volume or flow in coastal aquatic systems

Variable Spatial Characteristics

Name variable.detail.varNameHelp ?	Wave height attenuation ? Comment: Wave height attenuation is computed by a separate model in which reef friction is associated with the degree of topography over the reef flat. Three options for calculating friction were provided in the paper. 1st: The percent cover of benthic habitat within each cell, in particular live coral or uneroded dead coral, can be used to define fw from 0.08 to 0.20. This option and these values are used here for this model. The two other options are: 2nd: Coral reef habitat can be categorized into four broad classes to assign values to parameters and estimate wave energy attenuation by reef type (fw 0.14 to 0.18). 3rd: Estimates of reef rugosity or variability in coral heights along the reef can be used to more directly estimate fw.	Gravitational acceleration	Seawater density	Wave energy attenuation ? Comment: Wave energy attenuation uses the variable wave height attenuation which is computed by a separately in which reef friction is associated with the degree of topography over the reef flat. Three options for calculating friction were provided in the paper. 1st: The percent cover of benthic habitat within each cell, in particular live coral or uneroded dead coral, can be used to define fw from 0.08 to 0.20. This option and these values are used here for this model. The two other options are: 2nd: Coral reef habitat can be categorized into four broad classes to assign values to parameters and estimate wave energy attenuation by reef type (fw 0.14 to 0.18). 3rd: Estimates of reef rugosity or variability in coral heights along the reef can be used to more directly estimate fw.
Spatial Extent Area variable.detail.spExtentHelp ?	100-1000 km^2	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	100-1000 km^2
Spatially Distributed? variable.detail.spDistributedHelp ?	Yes	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	Yes
Observations Spatially Patterned? variable.detail.regularSpGrainHelp ?	Yes	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	Yes
Spatial Grain Type variable.detail.spGrainTypeHelp ?	area, for pixel or radial feature	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	area, for pixel or radial feature
Spatial Grain Size variable.detail.spGrainSizeHelp ?	10 m x 10 m	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	10 m x 10 m
Spatial Density variable.detail.spDensityHelp ?	Not applicable	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	Not applicable
EnviroAtlas URL variable.detail.enviroAtlasURLHelp ?	National Hydrography Dataset Plus (NHD PlusV2)

Variable Temporal Characteristics

Name variable.detail.varNameHelp ?	Wave height attenuation ? Comment: Wave height attenuation is computed by a separate model in which reef friction is associated with the degree of topography over the reef flat. Three options for calculating friction were provided in the paper. 1st: The percent cover of benthic habitat within each cell, in particular live coral or uneroded dead coral, can be used to define fw from 0.08 to 0.20. This option and these values are used here for this model. The two other options are: 2nd: Coral reef habitat can be categorized into four broad classes to assign values to parameters and estimate wave energy attenuation by reef type (fw 0.14 to 0.18). 3rd: Estimates of reef rugosity or variability in coral heights along the reef can be used to more directly estimate fw.	Gravitational acceleration	Seawater density	Wave energy attenuation ? Comment: Wave energy attenuation uses the variable wave height attenuation which is computed by a separately in which reef friction is associated with the degree of topography over the reef flat. Three options for calculating friction were provided in the paper. 1st: The percent cover of benthic habitat within each cell, in particular live coral or uneroded dead coral, can be used to define fw from 0.08 to 0.20. This option and these values are used here for this model. The two other options are: 2nd: Coral reef habitat can be categorized into four broad classes to assign values to parameters and estimate wave energy attenuation by reef type (fw 0.14 to 0.18). 3rd: Estimates of reef rugosity or variability in coral heights along the reef can be used to more directly estimate fw.
Temporal Extent variable.detail.tempExtentHelp ?	2006-2007, 2010	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	2006-2007, 2010
Temporally Distributed? variable.detail.tempDistributedHelp ?	Not applicable	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	Not applicable
Regular Temporal Grain? variable.detail.regularTempGrainHelp ?	Not applicable	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	Not applicable
Temporal Grain Size Value variable.detail.tempGrainSizeValHelp ?	Not applicable	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	Not applicable
Temporal Grain Size Units variable.detail.tempGrainSizeUnitHelp ?	Not applicable	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	Not applicable
Temporal Density variable.detail.tempDensityHelp ?	Not applicable	Not recorded for Constant or Factor Variables	Not recorded for Constant or Factor Variables	Not applicable

Variable Values

Name variable.detail.varNameHelp ?	Wave height attenuation ? Comment: Wave height attenuation is computed by a separate model in which reef friction is associated with the degree of topography over the reef flat. Three options for calculating friction were provided in the paper. 1st: The percent cover of benthic habitat within each cell, in particular live coral or uneroded dead coral, can be used to define fw from 0.08 to 0.20. This option and these values are used here for this model. The two other options are: 2nd: Coral reef habitat can be categorized into four broad classes to assign values to parameters and estimate wave energy attenuation by reef type (fw 0.14 to 0.18). 3rd: Estimates of reef rugosity or variability in coral heights along the reef can be used to more directly estimate fw.	Gravitational acceleration	Seawater density	Wave energy attenuation ? Comment: Wave energy attenuation uses the variable wave height attenuation which is computed by a separately in which reef friction is associated with the degree of topography over the reef flat. Three options for calculating friction were provided in the paper. 1st: The percent cover of benthic habitat within each cell, in particular live coral or uneroded dead coral, can be used to define fw from 0.08 to 0.20. This option and these values are used here for this model. The two other options are: 2nd: Coral reef habitat can be categorized into four broad classes to assign values to parameters and estimate wave energy attenuation by reef type (fw 0.14 to 0.18). 3rd: Estimates of reef rugosity or variability in coral heights along the reef can be used to more directly estimate fw.
Units variable.detail.estUnitHelp ?	%	Not reported	Not reported	%
Min Value variable.detail.minEstHelp ?	0	Not reported	Not reported	0
Max Value variable.detail.estHelp ?	70.3	Not reported	Not reported	88.4
Other Value Type variable.detail.natureOtherEstHelp ?	Mean	Single Observation or Parameter Value	Single Observation or Parameter Value	Mean
Other Value variable.detail.otherEstHelp ?	0.70	9.81	1025	0.60

Variable Variability and Sensitivity

Name

Wave height attenuation ?

Gravitational acceleration

Seawater density

Wave energy attenuation ?

Variability Expression Given?

No

Not recorded for Constant or Factor Variables

No

Variability Metric

SD

None

SD

Variability Value

0.0-70.3

None

0.0-88.4

Variability Units

%

None

%

Resampling Used?

Not applicable

Not recorded for Constant or Factor Variables

Not applicable

Variability Expression Used in Modeling?

Not applicable

Not recorded for Constant or Factor Variables

Not applicable

Variable Operational Validation (Response Variables only)

Name

Wave energy attenuation

Variable ID

9586

Validated?

Yes

Validation Approach (within, between, etc.)

Response-only comparison (to independent observations)

Validation Quality (Qual/Quant)

Point-to-Point Comparisons

Validation Method (Stat/Deviance)

Correlation Metrics

Validation Metric

Spearman correlation coefficient

Validation Value

0.51

Validation Units

unitless

Use of Measured Response Data

None

US EPA

EcoService Models Library (ESML)

Variables Details

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