Featured Research

from universities, journals, and other organizations

Changes in rainfall patterns are projected for next 30 years on Hawaii's Oahu

Date:
October 11, 2011
Source:
University of Hawaii ‑ SOEST
Summary:
Scientists in Hawaii have projected an increased frequency of heavy rainfall events but a decrease in rainfall intensity during the next 30 years (2011-2040) for the southern shoreline of Oahu, according to a recent study.

Storm clouds are visible as they move in to Kahana Valley on Oahu, Hawaii.
Credit: Chase Norton, SOEST/UH-Manoa

Scientists at University of Hawaii - Manoa have projected an increased frequency of heavy rainfall events but a decrease in rainfall intensity during the next 30 years (2011-2040) for the southern shoreline of Oahu, according to a recent study published in the Journal of Geophysical Research.

Related Articles


Chase Norton, a Meteorology Research Assistant at the School of Ocean and Earth Science and Technology (SOEST) at UH -- Manoa, and colleagues (Professors Pao-Shin Chu and Thomas Schroeder) used a statistical model; rainfall data from rainfall gauges on Oahu, Hawaii; and a suite of General Circulation Models (GCMs) from the Intergovernmental Panel on Climate Change (IPCC) to project future patterns of heavy rainfall events on Oahu. GCMs play a pivotal role in the understanding of climate change and associated local changes in weather.

Heavy rainfall and flash floods are common in the Hawaiian Islands due to their steep terrain, rain‐producing weather systems, and abundant moisture supply. They have caused multimillion dollars damage to homes, properties, roads, agriculture, and other sectors. Environmentally, heavy rainfall and runoff events in Hawaii, which are likely to cause slope and coastal erosion, pollutant discharges to the near shore marine environment, coral reef degradation, among others, are expected to change as Earth undergoes an unprecedented warming. Given the socioeconomic repercussions resulting from past storm events, it is of considerable interest to investigate changes in the frequency and intensity of heavy rainfall events in Hawaii, particularly for Oahu, as it is the most populous island in Hawaii.

"The results presented in this study may benefit many agencies who are concerned with floods and relevant policy-making in the face of climate change," says Chu, UH - Manoa Meteorology Professor, Hawaii State Climate Office Director, and co-author of the study. "For instance, changes in rainstorm intensity may be a serious consideration in aquifer management - as precipitation is the primary water source for streams and groundwater supply."

Norton, Chu, and Schroeder would like to use the IPCC GCM simulations and extend the rainfall model to project future events in other locations. They also plan to use a high resolution regional climate model to project future changes in water resources in the Hawaiian Islands.


Story Source:

The above story is based on materials provided by University of Hawaii ‑ SOEST. Note: Materials may be edited for content and length.


Journal Reference:

  1. Chase W. Norton, Pao-Shin Chu, Thomas A. Schroeder. Projecting changes in future heavy rainfall events for Oahu, Hawaii: A statistical downscaling approach. Journal of Geophysical Research, 2011; 116 (D17) DOI: 10.1029/2011JD015641

Cite This Page:

University of Hawaii ‑ SOEST. "Changes in rainfall patterns are projected for next 30 years on Hawaii's Oahu." ScienceDaily. ScienceDaily, 11 October 2011. <www.sciencedaily.com/releases/2011/10/111011102012.htm>.
University of Hawaii ‑ SOEST. (2011, October 11). Changes in rainfall patterns are projected for next 30 years on Hawaii's Oahu. ScienceDaily. Retrieved March 30, 2015 from www.sciencedaily.com/releases/2011/10/111011102012.htm
University of Hawaii ‑ SOEST. "Changes in rainfall patterns are projected for next 30 years on Hawaii's Oahu." ScienceDaily. www.sciencedaily.com/releases/2011/10/111011102012.htm (accessed March 30, 2015).

Share This


More From ScienceDaily



More Earth & Climate News

Monday, March 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Arthropod Fossil Might Be Relative Of Spiders, Scorpions

New Arthropod Fossil Might Be Relative Of Spiders, Scorpions

Newsy (Mar. 29, 2015) A 508-million-year-old arthropod that swam in the Cambrian seas is thought to share a common ancestor with spiders and scorpions. Video provided by Newsy
Powered by NewsLook.com
Vietnam Rice Boom Piles Pressure on Farmers and the Environment

Vietnam Rice Boom Piles Pressure on Farmers and the Environment

AFP (Mar. 29, 2015) Vietnam&apos;s drive to become the world&apos;s leading rice exporter is pushing farmers in the fertile Mekong Delta to the brink, say experts, with mounting costs to the environment. Duration: 02:35 Video provided by AFP
Powered by NewsLook.com
Raw: New Eruptions at Colima Volcano in Mexico

Raw: New Eruptions at Colima Volcano in Mexico

AP (Mar. 28, 2015) The Colima Volcano in western Mexico sent large columns of ash up into the air on Saturday. (March 28) Video provided by AP
Powered by NewsLook.com
Antarctic Ice Is Melting Faster Than Ever

Antarctic Ice Is Melting Faster Than Ever

Newsy (Mar. 27, 2015) A new study of nearly two decades of satellite data shows Antarctic ice shelves are losing more mass faster every year. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins