Monday, June 23, 2008

Blogging the Vog: SO2 Monitoring on the Big Island

NOAA Mapped Mosaic of Kilauea Volcano SO2 emissionsHawaii's National Guard has joined the fray in coping with emissions from Kilauea Volcano on the Big Island of Hawaii. Honolulu's KHON 2 News reports that State and Federal agencies -- including the Guard -- have set up new monitoring systems to track concentrations of sulfur dioxide (SO2) in the ambient air at a number of locations around the Big Island. SO2 is considered to be potentially the most hazardous of the numerous gases emitted by Kilauea Volcano.

According to KHON 2 News, the monitoring equipment deployed to monitor SO2 on the Big Island is the same as that used to monitor for "weapons of mass destruction" -- presumably that used to detect evidence of chemical warfare agents. What a thought! -- yet what an appropriate and welcome peacetime use for such equipment.

KHON 2 News
quoted Lt. Colonel Trey Johnson, Hawaii National Guard, who said, "In this particular case Kilauea was producing sulphur dioxide levels that were of concern, and that exceeded the county's ability to respond to it effectively."

Hawaii County Fire Chief Darryl Oliveira added, "We had none of that in place prior to April. And again thanks to all the partnership we had with all the agencies, mainly the 93rd, we were able to put that together so now we have some form of monitoring system in place that can be used as a tool."

In recent months, Kilauea Volcano on the Big Island of Hawaii has been emitting unusually high levels of gases, smoke, and ash, leading to unprecedented amounts of vog (volcano smog). At times the vog has been heavy enough to be visible throughout the island chain, even in communities on Kauai, the island farthest from the active volcano. Communities on the Big Island have been affected most, and most often, due to their proximity to the source of the emissions that create the vog.



About the Illustration: The U.S. National Oceanic and Atmospheric Agency (NOAA) produces mapped 24-hour composite images of SO2 emissions from Hawaii's Kilauea Volcano. The one shown above maps the SO2 cloud for June 20, 2008. Click on the image above to view the four most recent NOAA SO2 maps for Kilauea.

Click here for information and links to more resources about vog in Hawaii.

2 comments:

Will said...

I read somewhere a while back that one reawakening volcano can contribute as much greenhouse gas in a month as humans have done in total for the past 20 years. Of course this was online, so who knows if it is accurate?

BNS said...

I hadn't heard that, but given Kilauea's activity in the last few months, I wouldn't doubt it!

Bobbie