geostationary observations of hot spots in hawaii l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Geostationary Observations of Hot Spots in Hawaii PowerPoint Presentation
Download Presentation
Geostationary Observations of Hot Spots in Hawaii

Loading in 2 Seconds...

play fullscreen
1 / 25

Geostationary Observations of Hot Spots in Hawaii - PowerPoint PPT Presentation


  • 154 Views
  • Uploaded on

Geostationary Observations of Hot Spots in Hawaii. Luke Flynn , Robert Wright, Andrew Harris Hawaii Institute of Geophysics and Planetology University of Hawaii at Manoa GOFC/GOLD Global Geostationary Fire Monitoring Applications Workshop Darmstadt, Germany March 24, 2004.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Geostationary Observations of Hot Spots in Hawaii' - merle


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
geostationary observations of hot spots in hawaii

Geostationary Observations of Hot Spots in Hawaii

Luke Flynn, Robert Wright, Andrew Harris

Hawaii Institute of Geophysics and Planetology

University of Hawaii at Manoa

GOFC/GOLD Global Geostationary Fire Monitoring Applications Workshop

Darmstadt, Germany

March 24, 2004

hawaii hot spot detection program
Hawaii Hot Spot Detection Program
  • Objective: To provide operational synergistic global coverage in near-real-time for hazard management applications.
  • Available High-Temporal Monitoring Systems:
    • MODIS Terra and Aqua – Up to 4 times a day polar orbiting global coverage restricted to active fires (only hot spot data recorded).
    • GOES 9, 10, 12 – Geostationary coverage of most of Western Hemisphere plus sporadic coverage of Pacific Rim.
  • Satellite and Field-Based Validation Data Sets:
    • High spatial resolution data from ASTER, Landsat 7, and EO-1 (Hyperion and ALI).
    • Field-based comparative data of radiative flux from Kilauea (on-line) and other volcanoes.
  • Supported Projects
    • Mainly Volcano Hazard Monitoring
    • Pacific Disaster Center (PDC) effort to monitor fire hazards within Pacific Rim and west to include India and Australia.
slide3

Hotspots, such as volcanic eruptions or fires, pose serious hazards to sensitive ecosystems,

transportation and communication networks, and to populated regions.

Orbiting Earth-observing satellites gather and relay valuable data on these hotspot hazards as

they develop around the globe.

Timely dissemination of these data to scientists and to local civil defense officials is crucial in

efforts to understand and minimize losses from hazardous hotspot activity.

HOTSPOTS ties together various sources of near-real-time data acquired by different

Earth-observing satellites and processed by scientists at the Hawaii Institute of Geophysics and

Planetology, University of Hawaii.

Current Hotspot Monitoring Sites

GOES 8/10 Hotspot Images

http://goes.higp.hawaii.edu/

Selected western-hemisphere sites updated every 10 to 30 minutes. Data are

collected by geostationary GOES 8 and GOES 10 satellites in 15 minute intervals.

MODIS Thermal Alerts

http://modis.higp.hawaii.edu/

Global maps of thermally significant events captured daily by MODIS

Pu'u 'O'o Vent Monitoring

http://volcano2.pgd.hawaii.edu/puuoo

1 Hour, 4 Hour, Daily and Weekly plots of thermal activity from

selected locations within Pu'u 'O'o Crater

geostationary hot spot detection
Geostationary Hot Spot Detection
  • GOES 9, 10, and 12 provide near-real-time event detection (8 – 11 minute delay) of Western Hemisphere (every 15-30 minutes) and Pacific Rim (5-8 images per day).
  • Data are available online for 15 day period after which they are stored to DVD. Online data browse tool helps image searches.
  • DVD archive extends from 1998 to present. Huge data set that is unwieldy to respond to multiple large data queries.
  • Automated email alert notification system extending to hazard mitigation officials now in 5th year of operation.
slide5

With acknowledgments to the

Naval Research Laboratory Satellite Applications Group

headed by Jeff Hawkins (hawkins@nrlmry.navy.mil)

for data processing and access, and the

University of Hawaii’s Satellite Oceanography Laboratory

GOES 8/10 Hot Spot Images

Status: All sites operating normally.

GOES Image Viewer

GOES 10

Continental US

Aleutians

Upper Aleutians

Big Island

Hawai’i

Hawai’i

State of Hawai’i

e158s09

Kavachi

e169s18

Yasur/Ambrym

New Zealand

North Island

GOES 8

Western US

Western US

Amazon

Brazil

Colima

W. Mexico

Cotopaxi

Ecuador

Galapagos

E. Pacific

Eastern US

Eastern US - Maine

Lascar

N. Chile

Montserrat

Lesser Antilles

Nicaragua

Central Am.

Popocatepetl

Central Mexico

Eastern US

Eastern US

Santa Maria

Guatemala

Villarrica

Chile

Costa Rica

(& Panama)

Senegal

W. Africa

slide6

Http://goes.higp.hawaii.edu/

Near-real-time hot spot data processing and dissemination

Direct GOES reception every 15 mins.

Direct route

Optionalroute

Public/media

Automated

pre-processing

Reception - generation lag: 12 mins.

Observatories

Email alert

Automated

product

generation

Web-based hot spot maps & images

slide7

The GOES

System

RGB

Image

slide10

Site Name

Year:Day

Image Type

Forward

Backward

Julian Day

Continuous

2001:149

2001:150

2001:151

2001:152

2001:153

2001:154

2001:155

2001:156

2001:157

2001:158

2001:159

2001:160

atm

b1

b2m4

hot

key

prob

rgb

Amazon

Bigisland

Colima

Cotopax

Galapagos

Hawaii

Lascar

Montserrat

Nicaragua

NZL

Popocatepetl

Santamaria

44 Images Found

20010605.0215.g08.rgb.jpg

20010605.0245.g08.rgb.jpg

20010605.0315.g08.rgb.jpg

View Image

Displayed Image

20010605.0215.g08.rgb.jpg

Prev Image

Next Image

Show/Hide Overlays

Play as Movie

Duration

Refresh (Sec)

Coasts

Lat/Lon

0

0.25

1

2

Reset Control Points

Geography

Quit Image Viewer

slide11

http://goes.higp.hawaii.edu - Email Notices

CENAPRED

(Popocatepetl)

INSIVUMEH

(Guatemala)

MVO

(Montserrat)

HVO (Hawai’i)

Inst.

Geofisico

(Ecuador)

CSIRO (Kavachi)

Yasur, Ambrym,

North Island (NZ)

August 2000

SERNAGEOMIN

(Chile)

Colima Volcano

Obsevatory

(Mexico)

U. Blaise Pascal & INETER

(Nicaragua)

Darwin Research

Station

(Galapagos)

goes 9 coverage extends to pacific rim
GOES-9 coverage extends to Pacific Rim

GOES – 9 coverage is sporadic but allows us to see fire activity in the Philippines, Japan, Indonesia, New Zealand, and Kamchatka.

uh modis thermal alert system 2004
UH MODIS Thermal Alert System - 2004
  • Provides global observations for geostationary data validation a few times per day and extends to upper latitudes that geostationary systems do not cover.
  • MODIS Alert acquires channels 21, 22, 31, and 32. Channels 21, 22, and 32 are used for the alert test.
  • Latest online addition of software provides point and click zoom capability (0.5 deg x 0.5 deg).
  • High resolution Shuttle radar DEM of globe provides great location accuracy for hot spots.
  • Ability to run a variety of algorithms on completely online data set.
  • Data transfers are very small making it an excellent option for field locations with poor Internet connectivity.
  • Potential UH MODIS Thermal Alert Difficulties
    • Cannot distinguish between cloud-covered fire and no fire (MODIS Rapid Response can distinguish clouds).
    • Cannot map burn scars (MODIS Rapid Response).
slide16

Thresholding lava pixels: Big Island example

‘Warm’

clouds

Lava

‘Warm’

land

22-32

‘Cold’

land

‘Cold’

clouds

Ocean

slide17

Thresholding hot-spots using (22-32)/(22+32)

Lava

22-32/22+32

‘Cold’

land

‘Cold’

clouds

‘Warm’

land

‘Warm’

clouds

Ocean

status of modis thermal alert data archive
Status of MODIS Thermal Alert Data Archive
  • MODIS data were processed for short period in June, 2000 and also currently for September 15, 2000 – March, 2004.
  • Processing continues to lag present day by less than 1 day.
  • All alerts available on line for data queries.
  • High spatial resolution radar DEM covers a large part of globe.
  • Weekly summary of active volcanoes updated daily (~ 10-15 active volcanoes/week).
  • Developed PDC Algorithm - 10 largest hot spots tracked (added radiance from contiguous pixels) per day.
comparative sampling of modis alerts
Comparative Sampling of MODIS Alerts

Daily Sampling

Monthly Sampling

modis thermal alert zoom capability
MODIS Thermal Alert Zoom Capability

MODIS alerted pixels projected onto radar DEM provide excellent accuracy for hazard applications and geostationary validation exercises.

tracking hot spots with modis
Tracking hot spots with MODIS

The eruption of Anatahan volcano in the Northern Mariana Islands illustrates the utility of the MODIS system for hot spot validation studies.

Most hot spots are located within the eastern crater of Anatahan where the main eruption took place.

Red dots mark the centers of alerted pixels, orange boxes the extent of 1 km pixels, and yellow circles the possible error where hot spots could have been located to affect the alerted pixel.

slide22

MODIS Thermal Alert Results

Volcano

Ambrym

Arenal

Bagana

Balagan-Tas

Bezymianny

Big Ben

Cleveland

Erebus

Erta Ale

Etna

Fuego

Ibu

Karangetang

Karymsky

Kilauea

Krakatau

Lascar

Lopevi

Mayon

Merapi

Michael

Miyake-jima

Activity

Lava-lake

Vent

Lava dome

??

Lava dome

Vent

Vent

Lava-lake

Lava-lake

Vent/lava flow

Vent

Vent

Lava dome

Lava dome

Lava flows

Vent

Lava dome

Lava flows

Lava dome

Lava dome

??

Vent

Alerts

2

18

35

1

21

38

3

39

14

13

28

1

3

1

3

1

2

Volcano

Montagu

Nyamuragira

Nyiragongo

Pacaya

P. Fournaise

Popocatepetl

Rabaul

Santa Maria

Semeru

Shiveluch

Montserrat

Stromboli

Tinakula

Tofua

Ulawun

Villarrica

Yasur

Alerts

8

3

10

1

10

5

3

58

49

63

1

2

10

3

87

1

5

1

2

20

2

1

Activity

??

Lava flows

Lava flows

Vent

Lava flows

Lava dome

Vent

Lava dome

Vent

Lava dome

Lava dome

Vent

Vent

??

Lava flows

Lava-lake

Vent

hyperion for fire radiance validation studies
Hyperion for Fire Radiance Validation Studies

Hyperion has 220 bands at 0.4 - 2.5 mm

with 30 m spatial resolution, but only

a 7.5 km swath width.

Part of a Hyperion image on left showing

more extensive eruption.

Saturation of detectors over hot channels

cause a radiance echo in Hyperion data.

We are working to reconstruct the original

analog signal from the saturated pixels

and the radiant echo.

operational conclusions
Operational Conclusions
  • Have to identify users and deliver product within their time frame.
  • Have to deliver a product that is readily interpretable - not complicated.
  • With the volume of geostationary data, deliver notice when search criteria are satisfied.
  • Provide product support for users.