Hawai‘i Climate Data Portal
HCDP Overview and attributes
Ryan J. Longman, Mathew P. Lucas, Jared Mclean, Sean Cleveland, Keri Kodama, Abby G. Frazier, Katie Kamelamela, Aimee Schriber, Michael Dodge, Gwen Jacobs, Thomas W. Giambelluca. n.d. “Hawaiʻi Climate Data Portal (HCDP).” Scientific Data. (In Preparation)
HCDP Data Download and Visualization Tool
Mclean, Jared, Sean B. Cleveland, Michael Dodge II, Matthew P. Lucas, Ryan J. Longman, Thomas W. Giambelluca, and Gwen A. Jacobs. 2021. “Building A Portal For Climate Data-Mapping Automation, Visualization, and Dissemination.” Concurrency and Computation: Practice and Experience. (Journal)
McLean, J. H., S. B. Cleveland, M. P. Lucas, R. J. Longman, T. W. Giambelluca, J. Leigh, and G. A. Jacobs. 2020. “The Hawai‘i Rainfall Analysis and Mapping Application (HI-RAMA): Decision Support and Data Visualization for Statewide Rainfall Data. In Practice and Experience in Advanced Research Computing.” Practice and Experience in Advanced Research 239–45. (Journal)
HCDP Monthly Rainfall Maps
2020-present day
Ryan J. Longman, Mathew P. Lucas, Jared Mclean, Sean Cleveland, Keri Kodama, Abby G. Frazier, Katie Kamelamela, Aimee Schriber, Michael Dodge, Gwen Jacobs, Thomas W. Giambelluca. n.d. “Hawaiʻi Climate Data Portal (HCDP).” Scientific Data. (In Preparation)
1990-2019 Maps and Mapping Methods
Lucas, Mathew P., Ryan J. Longman, Thomas W. Giambelluca, Abby F. Frazier, J. Mclean, S. B. Cleveland, YF. Haung, and Jonghyun H. Lee. n.d. “Optimizing Automated Kriging to Improve Spatial Interpolation of Monthly Rainfall over Complex Terrain.” In Review: Journal of Hydrometeorology. (Journal)
1920 -2012 “Legacy” Rainfall Maps and Methods
Frazier, Abby G., Thomas W. Giambelluca, Henry F. Diaz, and Heidi L. Needham. 2016. “Comparison of Geostatistical Approaches to Spatially Interpolate Month-Year Rainfall for the Hawaiian Islands.” International Journal of Climatology. (Journal)
Longman, R.J., Newman, A.J. Giambelluca, T.W. Lucas, M., (2020). Characterizing the uncertainty and assessing the value of gap-filled daily rainfall data in Hawai‘i. Journal of Applied Meteorology and Climatology, 59 (7), 1261-1276. (Journal)

HCDP Rainfall Data
2020-present day Daily and Monthly Data
Ryan J. Longman, Mathew P. Lucas, Jared Mclean, Sean Cleveland, Keri Kodama, Abby G. Frazier, Katie Kamelamela, Aimee Schriber, Michael Dodge, Gwen Jacobs, Thomas W. Giambelluca. n.d. “Hawaiʻi Climate Data Portal (HCDP).” Scientific Data. (In Preparation)
1990-2019
Lucas, Mathew P., Ryan J. Longman, Thomas W. Giambelluca, Abby F. Frazier, J. Mclean, S. B. Cleveland, YF. Haung, and Jonghyun H. Lee. n.d. “Optimizing Automated Kriging to Improve Spatial Interpolation of Monthly Rainfall over Complex Terrain.” In Review: Journal of Hydrometeorology. (Journal)
1990-2014
Longman, Ryan J., Abby G. Frazier, Andrew J. Newman, Thomas W. Giambelluca, David Schanzenbach, Aurora Kagawa-Viviani, Heidi Needham, Jeffrey R. Arnold, and Martyn P. Clark. 2019. “High-Resolution Gridded Daily Rainfall and Temperature for the Hawaiian Islands (1990-2014).” Journal of Hydrometeorology JHM-D-18-0112.1. (Journal)
1920 -2012 “Legacy” Monthly Data
Frazier, Abby G., Thomas W. Giambelluca, Henry F. Diaz, and Heidi L. Needham. 2016. “Comparison of Geostatistical Approaches to Spatially Interpolate Month-Year Rainfall for the Hawaiian Islands.” International Journal of Climatology. (Journal)
HCDP Daily and Monthly Temperature Maps
2020-present day
Ryan J. Longman, Mathew P. Lucas, Jared Mclean, Sean Cleveland, Keri Kodama, Abby G. Frazier, Katie Kamelamela, Aimee Schriber, Michael Dodge, Gwen Jacobs, Thomas W. Giambelluca. n.d. “Hawaiʻi Climate Data Portal (HCDP).” Scientific Data. (In Preparation)
1990-2018 Maps and Mapping Methods
Kodama, K., E. Kourkchi, R. J. Longman, M. P. Lucas, S. Bateni, Y. F. Huang, A. Kagawa-Viviani, J. McLean, S. B. Cleveland, and T. W. Giambelluca. n.d. “Mapping Daily Temperature in the Hawaiian Islands (1990-2018), Using an Optimized Bi-Linear Regression Technique.” Journal of Geophysical Research. (In Preparation)
HCDP Daily and Monthly Temperature Data
2019-present day
Ryan J. Longman, Mathew P. Lucas, Jared Mclean, Sean Cleveland, Keri Kodama, Abby G. Frazier, Katie Kamelamela, Aimee Schriber, Michael Dodge, Gwen Jacobs, Thomas W. Giambelluca. n.d. “Hawaiʻi Climate Data Portal (HCDP).” Scientific Data. (In Preparation)
1990-2018
Longman, Ryan J., Thomas W. Giambelluca, Michael A. Nullet, Abby G. Frazier, Kevin Kodama, Shelley D. Crausbay, Paul D. Krushelnycky, Susan Cordell, Martyn P. Clark, Andy J. Newman, and Jeffrey R. Arnold. 2018. “Compilation of Climate Data from Heterogeneous Networks across the Hawaiian Islands.” Scientific Data 5:180012. (Journal)
Kagawa-Viviani, A. K. and T. W. Giambelluca. 2020. “Spatial Patterns and Trends in Surface Air Temperatures and Implied Changes in Atmospheric Moisture Across the Hawaiian Islands, 1905–2017.” Journal of Geophysical Research: Atmospheres 125(2). (Journal)
Kodama, K., E. Kourkchi, R. J. Longman, M. P. Lucas, S. Bateni, Y. F. Huang, A. Kagawa-Viviani, J. McLean, S. B. Cleveland, and T. W. Giambelluca. n.d. “Mapping Daily Temperature in the Hawaiian Islands (1990-2018), Using an Optimized Bi-Linear Regression Technique.” Journal of Geophysical Research. (In Preparation)
Relative Humidity, Solar Radiation, Windspeed Data
Longman, Ryan J., Thomas W. Giambelluca, Michael A. Nullet, Abby G. Frazier, Kevin Kodama, Shelley D. Crausbay, Paul D. Krushelnycky, Susan Cordell, Martyn P. Clark, Andy J. Newman, and Jeffrey R. Arnold. 2018. “Compilation of Climate Data from Heterogeneous Networks across the Hawaiian Islands.” Scientific Data 5:180012. (Journal)
(Longman, R. J., M. P. Lucas, J. Mclean, T. W. Giambelluca, S. Cleveland, Kodama, K., M. Dodge II, K. Kamelamela, A. Schriber, A. Frazier, Yu-Fen Huang, and G. Jacobs. n.d. “Hawaiʻi Climate Data Portal (HCDP).” Scientific Data. (In Preparation)

Future Climate Projections
Products available on portal
Longman, R. J., A. F. Frazier, C. P. Giardina, E. W. Parsons, and S. McDaniel. n.d. “The Pacific Drought Knowledge Exchange: A Co-Production Approach to Deliver Resources to Nature User Groups.” Weather, Climate, and Society. ( In Preparation)
Dynamical Downscaling Methods for Rainfall and Temperature
Zhang, Chunxi, Yuqing Wang, Kevin Hamilton, and Axel Lauer. 2016. “Dynamical Downscaling of the Climate for the Hawaiian Islands. Part II: Projection for the Late Twenty-First Century.” Journal of Climate 29(23):8333–54. (Journal)
Statistical Downscaling Methods Rainfall
Elison Timm, Oliver, Thomas W. Giambelluca, and Henry F. Diaz. 2015. “Statistical Downscaling of Rainfall Changes in Hawai‘i Based on the CMIP5 Global Model Projections.” Journal of Geophysical Research 120(1):92–112. (Journal)
Statistical Downscaling Methods Temperature
Elison Timm, Oliver. 2017. “Future Warming Rates over the Hawaiian Islands Based on Elevation-Dependent Scaling Factors.” International Journal of Climatology 37:1093–1104. (Journal)
Standardized Precipitation Index
Maps and Methods 2012-2012
Lucas, Matthew P., Clay Trauernicht, Abby G. Frazier, and Tomoaki Miura. 2020. “Long-Term, Gridded Standardized Precipitation Index for Hawai’i.” Data 5. (Journal)
Trade Wind Inversion Data
Data 1990-2014 Hilo and Līhuʻe
(Longman, Ryan J., Henry F. Diaz, and Thomas W. Giambelluca. 2015. “Sustained Increases in Lower-Tropospheric Subsidence over the Central Tropical North Pacific Drive a Decline in High-Elevation Rainfall in Hawaii.” Journal of Climate. (Journal)
Relevant Methods and Data not available on HCDP
Mean Climate

Rainfall Atlas of Hawai‘i Website
Giambelluca, Thomas W., Qi Chen, Abby G. Frazier, Jonathan P. Price, Yi Leng Chen, Pao Shin Chu, Jon K. Eischeid, and Donna M. Delparte. 2013. “Online Rainfall Atlas of Hawai’i.” Bulletin of the American Meteorological Society 94:312–16. (Journal) (Website)
Evapotranspiration of Hawai‘i Website
Giambelluca, Thomas W., Xiufu Shuai, Mallory L. Barnes, Randall J. Alliss, Ryan J. Longman, Tomoaki Miura, Qi Chen, Abby G. Frazier, Ryan G. Mudd, Lan Cuo, and Aaron D. Businger. 2014. Evapotranspiration of Hawai’i Final Report. Honolulu. (Journal) (Website)
Solar Radiation of Hawai‘i Website
Giambelluca, Thomas W., Xiufu Shuai, Mallory L. Barnes, Randall J. Alliss, Ryan J. Longman, Tomoaki Miura, Qi Chen, Abby G. Frazier, Ryan G. Mudd, Lan Cuo, and Aaron D. Businger. 2014. Evapotranspiration of Hawai’i Final Report. Honolulu. (Website)
Climate of Hawai‘i Website
Giambelluca, Thomas W., Xiufu Shuai, Mallory L. Barnes, Randall J. Alliss, Ryan J. Longman, Tomoaki Miura, Qi Chen, Abby G. Frazier, Ryan G. Mudd, Lan Cuo, and Aaron D. Businger. 2014. Evapotranspiration of Hawai’i Final Report. Honolulu. (Website)
Daily Rainfall and Temperature (Previous Effort)
1990-2014
Longman, Ryan J., Abby G. Frazier, Andrew J. Newman, Thomas W. Giambelluca, David Schanzenbach, Aurora Kagawa-Viviani, Heidi Needham, Jeffrey R. Arnold, and Martyn P. Clark. 2019. “High-Resolution Gridded Daily Rainfall and Temperature for the Hawaiian Islands (1990-2014).” Journal of Hydrometeorology JHM-D-18-0112.1. (Journal)