Downloads

Click on the underlined links below to download the files. All data files with a “.rar” at the end need to be unzipped after downloading (using WinZIP, WinRAR, 7-Zip, or a similar program).  Please regard Conditions of Use for all products and refer to our How To Cite page for citation information.  

Mean Annual Map Images

Image files of mean annual maps for select variables have been created and are available for download as *.JPG files. Due to the high number of variables, temporal resolutions, and map extents possible, only mean annual map images for select variables at the statewide extent have been generated.  For the full list of variables used in this project, please see the project Report and the table of mapped variables.


Color Maps:

Color Map Images

Unlike the interactive map which displays the variables on a continuous color ramp, these images display the values in categories. The categories were set based on the natural breaks in the values. The categories were set independently for different units, so the color breaks will differ slightly for different units.  

 

 

Files for download:

*File will open in a new window.  To save to your computer, right click and go to "Save image as..."

CategoryVariableMean Annual Map
Radiation Solar Radiation (W/m²) SolarRadiation_MeanAnn.jpg
  Clear Sky Radiation (W/m²) ClearSkyRadiation_MeanAnn.jpg
  Diffuse Radiation (W/m²) DiffuseRadiation_MeanAnn.jpg
  Downward Longwave Radiation (W/m²) DownwardLongwave_MeanAnn.jpg
  Upward Longwave Radiation (W/m²) UpwardLongwave_MeanAnn.jpg
  Net Radiation (W/m²) NetRadiation_MeanAnn.jpg
Other Climate
Variables
Air Temperature (°C) AirTemp_MeanAnn.jpg
  Wind Speed (m/s) WindSpeed_MeanAnn.jpg
  Relative Humidity (%) RelativeHumidity_MeanAnn.jpg
  Vapor Pressure Deficit (Pa) VPD_MeanAnn.jpg
  Albedo (%) Albedo_MeanAnn.jpg
  Cloud Frequency CloudFrequency_MeanAnn.jpg
  Available Soil Moisture SoilMoisture_MeanAnn.jpg
  Fractional Canopy Wetness FractionalCanopyWetness_MeanAnn.jpg
  Fractional Vegetation Cover FractionalVegCover_MeanAnn.jpg
  Leaf Area Index LAI_MeanAnn.jpg
  Land Cover LandCoverMap.jpg
  Midday Air Layer Heat Storage QA_Midday_MeanAnn.jpg
  Midnight Air Layer Heat Storage QA_Midnight_MeanAnn.jpg
  Midday Biomass Heat Storage QB_Midday_MeanAnn.jpg
  Midnight Biomass Heat Storage QB_Midnight_MeanAnn.jpg
  Midday Soil Heat Flux (W/m²) SoilHeatFlux_Midday_MeanAnn.jpg
  Midnight Soil Heat Flux (W/m²) SoilHeatFlux_Midnight_MeanAnn.jpg
  Vegetation Height (m) VegetationHeight_MeanAnn.jpg
Evaporation Actual Evapotranspiration (mm) AET_mm_MeanAnn.jpg
  Latent Energy Flux (W/m²) LE_wm2_MeanAnn.jpg
  Grass Reference Surface Potential Evapotranspiration (mm) GrassReference_PET_mm_MeanAnn.jpg
  Grass Reference Surface Potential Evapotranspiration (W/m²) GrassReference_PET_wm2_MeanAnn.jpg
  Penman-Monteith Potential Evapotranspiration (mm) PenmanMonteith_PET_mm_MeanAnn.jpg
  Penman-Monteith Potential Evapotranspiration (W/m²) PenmanMonteith_PET_wm2_MeanAnn.jpg
  Priestley-Taylor Potential Evapotranspiration (mm) PriestleyTaylorPET_mm_MeanAnn.jpg
  Priestley-Taylor Potential Evapotranspiration (W/m²) PriestleyTaylorPET_wm2_MeanAnn.jpg
  Transpiration (mm) Transpiration_mm_MeanAnn.jpg
  Soil Evaporation (mm) SoilEvap_mm_MeanAnn.jpg
  Wet Canopy Evaporation (mm) WetCanopyEvap_mm_MeanAnn.jpg

For mean rainfall maps, please see the Rainfall Atlas page

GIS Layers - ESRI Raster Format

Gridded GIS layers of select variables have been made available for download. Users can download the grids in ESRI and ASCII grid formats. These are available in various units, and each compressed *.rar file contains all maps for the given time scale (see below). Layers are available for the entire state (except Ni‘ihau). All files use geographic coordinates, WGS84 datum.

For more information about GIS, how to use GIS layers, or to obtain more Hawai‘i layers, please refer to the Hawai‘i State GIS page, http://planning.hawaii.gov/gis/.  After downloading, users can upload layers to ArcGIS Online to make their own maps as an alternative to using a desktop GIS program, http://www.arcgis.com/home/.

 

ESRI Grid Files:

Raster files are available at 250 m resolution (0.00225 x 0.00225 cell size) for the state. These are available in multiple units (depending on the variable), and multiple time scales: monthly (Jan-Dec, Annual - 13 maps), monthly-hourly (12 x 24 maps), and annual-hourly (24 maps).  All can be downloaded in ESRI grid format or ASCII grid format.  

CategoryVariableMonthlyMonthly-HourlyAnnual-Hourly
Radiation Solar Radiation

W/m²

W/m²

W/m²

  Clear Sky Radiation

W/m²

W/m²

W/m²

Diffuse Radiation

W/m²

W/m²

W/m²

  Downward Longwave
Radiation

W/m²

W/m²

W/m²

  Upward Longwave
Radiation

W/m²

W/m²

W/m²

  Net Radiation

W/m²

W/m²

W/m²

Other Climate
Variables
Air Temperature

°C - mean

°C - max

°C - min

°C - mean

°C - mean

  Surface Temperature

°C

°C

°C

  Wind Speed

N/A

N/A

m/s

Relative Humidity

%

%

%

  Vapor Pressure Deficit

Pa

Pa

Pa

  Albedo

%

N/A

N/A

  Cloud Frequency

Ratio

Ratio

Ratio

  Available Soil Moisture

Ratio

N/A

N/A

  Canopy Wetness Fraction

Ratio

Ratio

Ratio

  Vegetation Cover Fraction

Ratio

N/A

N/A

  Leaf Area Index

Area/Area

N/A

N/A

  Land Cover

Type

N/A

N/A

  Air Layer Heat Storage

W/m²

W/m²

W/m²

  Biomass Heat Storage

W/m²

W/m²

W/m²

  Soil Heat Flux

W/m²

W/m²

W/m²

  Vegetation Height

Meters

N/A

N/A

  Normalized Difference
Vegetation Index (NDVI)

Index

N/A

N/A

  Enhanced Vegetation
Index (EVI)
Index N/A N/A
  Canopy Conductance * * *
  Roughness Length

m

N/A

N/A

  Terrain Shading N/A * N/A
  Clear Sky Radiation
with Terrain Shading

W/m²

W/m²

W/m²

  Air Density kg/m3 kg/m3 kg/m3
  Available Energy W/m² W/m² W/m²
Evaporation Actual Evapotranspiration

Inches

Millimeters

Inches

Millimeters

Inches

Millimeters

  Latent Heat Flux

W/m²

W/m²

W/m²

  Grass Reference Surface
Potential Evapotranspiration

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

  Penman-Monteith 
Potential Evapotranspiration

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

  Priestley-Taylor 
Potential Evapotranspiration

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

  Transpiration

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

  Soil Evaporation

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

  Wet Canopy Evaporation

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

For mean rainfall maps, please see the Rainfall Atlas page

GIS Layers - ASCII Grid Format

Gridded GIS layers of select variables have been made available for download. Users can download the grids in ESRI and ASCII grid formats. These are available in various units, and each compressed *.rar file contains all maps for the given time scale (see below). Layers are available for the entire state (except Ni‘ihau). All files use geographic coordinates, WGS84 datum.

ASCII Grid Files:

ASCII files are available at 250 m resolution (0.00225 x 0.00225 cell size) for the state. These are available in multiple units (depending on the variable), and multiple time scales: monthly (Jan-Dec, Annual - 13 maps), monthly-hourly (12 x 24 maps), and annual-hourly (24 maps).  For ESRI raster grid format, see the above drop down menu.  

CategoryVariableMonthlyMonthly-HourlyAnnual-Hourly
Radiation Solar Radiation

W/m²

W/m²

W/m²

  Clear Sky Radiation

W/m²

W/m²

W/m²

Diffuse Radiation

W/m²

W/m²

W/m²

  Downward Longwave
Radiation

W/m²

W/m²

W/m²

  Upward Longwave
Radiation

W/m²

W/m²

W/m²

  Net Radiation

W/m²

W/m²

W/m²

Other Climate
Variables
Air Temperature

°C - mean

°C - max 

°C - min 

°C - mean

°C - mean

  Surface Temperature

°C

°C

°C

  Wind Speed

N/A

N/A

m/s

Relative Humidity

%

%

%

  Vapor Pressure Deficit

Pa

Pa

Pa

  Albedo

Ratio

N/A

N/A

  Cloud Frequency

Ratio

Ratio

Ratio

  Available Soil Moisture

Ratio

N/A

N/A

  Canopy Wetness Fraction

Ratio

Ratio

Ratio

  Vegetation Cover Fraction

Ratio

N/A

N/A

  Leaf Area Index

Area/Area

N/A

N/A

  Land Cover

Type

N/A

N/A

  Air Layer Heat Storage

W/m²

W/m²

W/m²

  Biomass Heat Storage

W/m²

W/m²

W/m²

  Soil Heat Flux

W/m²

W/m²

W/m²

  Vegetation Height

Meters

N/A

N/A

  Normalized Difference
Vegetation Index (NDVI)

Index

N/A

N/A

  Enhanced Vegetation
Index (EVI)
Index  N/A N/A
  Canopy Conductance

*

*

*

  Roughness Length m N/A N/A
  Terrain Shading

N/A

*

N/A

  Clear Sky Radiation
with Terrain Shading

W/m²

W/m²

W/m²

  Air Density kg/m3 kg/m3 kg/m3
  Available Energy W/m² W/m² W/m²
Evaporation Actual Evapotranspiration

Inches

Millimeters

Inches

Millimeters

Inches

Millimeters

  Latent Heat Flux

W/m²

W/m²

W/m²

  Grass Reference Surface
Potential Evapotranspiration

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

  Penman-Monteith 
Potential Evapotranspiration

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

  Priestley-Taylor 
Potential Evapotranspiration

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

  Transpiration

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

  Soil Evaporation

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

  Wet Canopy Evaporation

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

Inches

Millimeters

W/m²

For mean rainfall maps, please see the Rainfall Atlas page

Report

Evapotranspiration of Hawai‘i 2014 - Final Report

Conditions of Use

All maps, data, graphs, and narrative material available on this web site are subject to the following conditions.

Images. All color map images presented here are available for reproduction and distribution. The map source must be included in any reproduction.

Gridded Map Data. All gridded data and all other data presented here are available for reproduction and distribution for non-commercial use. The data source must be prominently stated whenever presenting these data in any form or any product derived in whole or part from these data.

Crediting the Source. Any reproduction or use of the images, maps, graphs, data, other information, or any product derived in whole or part from these data must credit the source in the following manner:

Please keep in touch about the best way to cite - we will update the citation once the journal article has been published:

Giambelluca, T.W., X. Shuai, M.L. Barnes, R.J. Alliss, R.J. Longman, T. Miura, Q. Chen, A.G. Frazier, R.G. Mudd, L. Cuo, and A.D. Businger. 2014. Evapotranspiration of Hawai‘i. Final report submitted to the U.S. Army Corps of Engineers—Honolulu District, and the Commission on Water Resource Management, State of Hawai‘i.

Sponsors of the 2014 Solar Radiation of Hawaiʻi project. The 2014 Solar Radiation of Hawai‘i project was developed under an agreement between the State of Hawaiʻi Commission on Water Resource Management and the U.S. Army Corps of Engineers, Honolulu District under Section 22 of the Water Resources Development Act of 1974.

No Warranty. We have made every effort to make all images, maps, graphs, data, and other information provided on this web site accurate and error-free. However, we do not guarantee the accuracy of any images, maps, graphs, data, or other information. All content is provided without warranty of any kind.