PE&RS August 2002

Cover Image
The cover image is a color-enhanced satellite image from the NOAA polar-orbiting environmental satellite, NOAA15 Advanced Very High Resolution Radiometer (AVHRR) instrument, showing the devastating fires in Arizona (larger image) and Colorado (smaller image) on 21 june 2002. This one kilometer resolution multispectral image was generated using three of the AVHR's five channels. Channel 3 (3.7 micrometers), sensitive to high temperature heat sources (hot spots), is the key for fire detection and is expressed as red in the image. Channel 2, in the near-infrared (0.725 micrometer), which is sensitive to growing vegetation, is expressed as green, and Channel 1, in the visible (at 0.58 micrometer), which responds to clouds and smoke, is expressed as blue.

This image is one of several products from NOAA for fire monitoring and detection. The highlight Article (page 774) in this issue provides information on the other products available from NOAA. Also see the peer-review article on page 831.

Highlight Article

774 Fire Detection and Monitoring Products at the National Oceanic and Atmospheric Administration
Donna McNamara, George Stephens, Bruce Ramsay, Elaine Prins, Ivan Csiszar, Chris Elvidge, Ruth Hobson, and Chris Schmidt

Peer-Reviewed Articles (Click the linked titles to see the full abstract)

801 Effects of Sensor Resolution on Mapping In-Stream Habitats
Carl J. Legleiter, W. Andrew Marcus, and Rick L. Lawrence

Supervised classifications of hyperspectral and simulated multispectral imagery provided insight into desirable spatial, spectral, and radiometric resolutions for remote mapping of in-stream features such as riffles, glides, and pools.

809 Monitoring Wetland Ditch Water Levels Using Landsat TM and Ground-Based Measurements
D.H.A. Al-Khudhairy, C. Leemhuis, V. Hoffmann, I.M. Shepherd, R. Calaon, J.R. Thompson, H. Gavin, D.L. Gasca-Tucker, G. Zalidis, G. Bilas, and D. Papadimos

Satellite imagery has much to offer in providing a historical perspective of wetland hydrology that otherwise would not be available, in monitoring changes in the hydrological regime of wetlands, and in providing complimentary approaches to field monitoring.

821 Photogrammetric Retrieval of Cloud Advection and Top Height from the Multi-Angle Imaging Spectroradiometer (MISR)
Jia Zong, Roger Davies, Jan-Peter Muller, and David S. Diner

Simultaneous stereoscopic retrieval of cloud advection and cloud-top height using multi-angle imagery is demonstrated to be practicable for global observations.

831 Testing the Sensitivity of a MODIS-Like Daytime Active Fire Detection Model in Alaska Using NOAA/AVHRR Infrared Data
C.A. Seielstad, J.P. Riddering, S.R. Brown, L.P. Queen, and W.M. Hao

Analysis of model performance demonstrates the effects of algorithm thresholds on detection sensitivity and indicates that modifications may be necessary to meet the demands of a diverse user group.

839 Evaluation of SAR-Optical Imagery Synthesis Techniques in a Complex Coastal Ecosystem
Floyd M. Henderson, Robert Chasan, Jamie Portolese, and Thomas Hart, Jr.

TM and SAR data are digitally merged using four methods and evaluated with regard to classifying upland/wetland land covers in an urbanizing coastal area.

847 Effects of JPEG Compression on the Accuracy of Photogrammetric Point Determination
Zhilin Li, Xiuxiao Yuan, and Kent W.K. Lam

Empirical results show that the degradation of the accuracy of photogrammetric point determination (PPD) caused by JPEG compression is almost linear with the Q-factor. 

Announcements
784 2002-2003 IGIF Student Awards
793 Call for Papers - ASPRS 2003 Annual Conference
819 Integrating Remote Sensing at the Global, Regional and Local Scale

Columns & Updates
776 Software Review
780 Grids & Datums - The Republic of Kiribati
786 Headquarters News
788 Industry News

Departments
786 New Member List
795 Who's Who in ASPRS
797 New Sustaining Member
798 Sustaining Members
800 Index to Advertisers
808 Instructions to Authors
830 Forthcoming Articles
854 Calendar
855 Classifieds
856 Bookstore
860 Professional Directory
863 Membership Application

 

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