PE&RS October 2007

This map shows the monthly incident Photosynthetically Active Radiation (PAR) over North America in the year 2003 from the Moderate Resolution Imaging Spectroradiometer (MODIS). The monthly PAR value is the average of daily-integrated PAR for one month, derived from instantaneous PAR using an adjusted sinusoidal model. Instantaneous PAR is estimated from an algorithm, based on the look-up table approach. This method decreases computational time and avoids approximations in the radiative transfer calculations. The most important feature of this algorithm is the use of a temporal signature that enables estimation of both surface refl ectance and atmospheric properties implicitly without requiring other ancillary information on cloud and aerosol conditions. Validation, using in situ measurements and inter-comparison with the Geostationary Operational Environmental Satellites (GOES) PAR, indicates that two MODIS sensors from Terra and Aqua provide accurate estimates of PAR. The polar-orbiting MODIS’s ability to map PAR is maximized at high latitudes where geostationary satellite data is not available and the number of MODIS overpasses is frequent.

Higlight Article
1085 Mapping High-Resolution Incident Photosynthetically Active Radiation over Land from Polar-Orbiting and Geostationary Satellite Data (Adobe PDF 201Kb)
Shunlin Liang, Tao Zheng, Dongdong Wang, Kaicun Wang, Ronggao Liu, Si-Chee Tsay, Steven Running, and John Townshend

1090 A Plan For a U.S. National Land Imaging Program — Future of Land Imaging Interagency Working Group August 2007 (Adobe PDF 180Kb)

Columns & Updates
1097 Grids and Datums — State of Bahrain (Adobe PDF 97Kb)

1099 Mapping Matters

1103 Book Review — Exploring the Urban Community: A GIS Approach (Adobe PDF 283Kb)

1107 Headquarters News

1107 The Francis H. “Frank” Moffitt Memorial Scholarship Award (Adobe PDF 484Kb)
1109 Photogrammetric Engineering and Remote Sensing (PE&RS) Journal Receives Top Rankings (Adobe PDF 71Kb)
1109 Committee on Floodplain Mapping Technologies Issues Report (Adobe PDF 71Kb)

1110 Industry News

Announcements
1105 Correction — September Grids & Datums
1114 New Sustaining Member— Kim Geomatics Corporation, Rollei Metric GmbH (Adobe PDF 59Kb)
1168 Call for Papers — Spatial Change Analysis

Departments
1089 ASPRS Member Champions (Adobe PDF 56Kb)
1096 Certification List
1105 New Member List
1113 Who’s Who in ASPRS
1115 Sustaining Members
1117 Instructions to Authors
1128 Calendar
1140 Forthcoming Articles
1189 Classifieds
1190 Professional Directory
1191 Advertiser Index
1192 Membership Application

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

1121 Spectral Characteristics of Drought-Stressed Forest Vegetation Observed by Laboratory Measurements and Hyperspectral Data
Kyu-Sung Lee, Min-Jung Kook, Jung-Il Shin, Sun-Hwa Kim, and Tae-Geun Kim

Determining the spectral characteristics of relative dense forest canopy under short-term drought conditions.

1129 Removal of Noise by Wavelet Method to Generate High Quality Temporal Data of Terrestrial MODIS Products
Xiaoliang Lu, Ronggao Liu, Jiyuan Liu, and Shunlin Liang

A new method to enhance the ability to remove noise in time-series data products.

1141 Estimating Grassland Biomass Using SVM Band Shaving of Hyperspectral Data
J.G.P.W. Clevers, G.W.A.M. van der Heijden, S. Verzakov, and M.E. Schaepman

The application of support vector machines (SVM) band-shaving to hyperspectral data for estimating biomass of grasslands.

1149 Estimating Crop Yield from Multi-temporal Satellite Data Using Multivariate Regression and Neural Network Techniques
Ainong Li, Shunlin Liang, Angsheng Wang, and Jun Qin

A new procedure using a trained artifi cial neural network model using an optimization algorithm compared to multivariate linear regression.

1159 Increasing Gross Primary Production (GPP) in the Urbanizing Landscapes of Southeastern Michigan
Tingting Zhao, Daniel G. Brown, and Kathleen M. Bergen

Gross primary production increased in the urbanizing landscapes of Southeastern Michigan between 1991 and 1999 due partly to the increased vegetation cover associated with conversion of agricultural lands to low-density exurban development.

1169 Estimation of Regional Evapotranspiration by TM/ETM+ Data over Heterogeneous Surfaces
Shaomin Liu, Guang Hu, Li Lu, and Defa Mao

Evapotranspiration in Beijing area is calculated by an estimation model of regional evapotranspiration with TM/ETM+ data and is validated with field observations.

1179 River Floodplain Vegetation Scenario Development using Imaging Spectroscopy-derived Products as Input Variables in a Dynamic Vegetation Model
M.E. Schaepman, G.W.W. Wamelink, H.F. van Dobben, M. Gloor, G. Schaepman-Strub, L. Kooistra, J.G.P.W. Clevers, A. Schmidt, and F. Berendse

Using HyMap data to derive leaf area index, spatial distribution of plant functional types, and model dominant species.