Assessment of estuarine water-quality indicators using MODIS medium-resolution bands: initial results from Tampa Bay, FL
Chuanmin Hu, Zhiqiang Chen, Tonya D. Clayton, Peter W. Swarzenski, John Brock, Frank E. Muller-Karger
2004, Remote Sensing of Environment (93) 423-441
Using Tampa Bay, FL as an example, we explored the potential for using MODIS medium-resolution bands (250- and 500-m data at 469-, 555-, and 645-nm) for estuarine monitoring. Field surveys during 21–22 October 2003 showed that Tampa Bay has Case-II waters, in that for the salinity range of 24–32 psu,...
An evaluation of gap-filled Landsat SLC-off imagery for wildland fire burn severity mapping
Stephen M. Howard, James M. Lacasse
2004, Photogrammetric Engineering and Remote Sensing (70) 877-880
n May 31, 2003 unusual artifacts appeared within image data collected by the Enhanced Thematic Mapper plus (ETM+) instrument on-board the Landsat 7 spacecraft. The U.S. Geological Survey (USGS), with the support of NASA, has been working to find a means of compensating for the data gaps that result from...
Urban growth in American cities : glimpses of U.S. urbanization
Roger Auch, Janis Taylor, William Acevedo
2004, Circular 1252
The Earth's surface is changing rapidly. Changes are local, regional, national, and even global in scope. Some changes have natural causes, such as earthquakes or drought. Other changes, such as urban expansion, agricultural intensification, resource extraction, and water resources development, are examples of human-induced change that have significant impact upon...
Development of a 2001 National Land Cover Database for the United States
Collin G. Homer, Chengquan Huang, Limin Yang, Bruce K. Wylie, Michael Coan
2004, Photogrammetric Engineering and Remote Sensing (70) 829-840
Multi-Resolution Land Characterization 2001 (MRLC 2001) is a second-generation Federal consortium designed to create an updated pool of nation-wide Landsat 5 and 7 imagery and derive a second-generation National Land Cover Database (NLCD 2001). The objectives of this multi-layer, multi-source database are two fold: first, to provide consistent land cover...
Processed Landsat 7 satellite imagery of the Taos Plateau-San Luis Valley region, New Mexico and Colorado
David A. Sawyer
2004, Open-File Report 2004-1040-B
Processed Landsat 7 satellite imagery of the Espanola Basin region, New Mexico
David A. Sawyer
2004, Open-File Report 2004-1040-A
Landsat yesterday and today: An American vision and an old challenge
John Faundeen, Darrel L. Williams, Cheryl A. Greenhagen
2004, Journal of Map & Geography Libraries (1) 59-73
Since the late 1960s, the United States government has invested more than $1 billion in designing, launching, and operating the Landsat (land satellite) series of Earth-observing satellites. Global change researchers, geologists, and environmental scientists have used images gathered by the satellites for purposes ranging from human health research, energy exploration,...
An automated approach to mapping corn from Landsat imagery
S.K. Maxwell, J.R. Nuckols, M.H. Ward, R.M. Hoffer
2004, Computers and Electronics in Agriculture (43) 43-54
Most land cover maps generated from Landsat imagery involve classification of a wide variety of land cover types, whereas some studies may only need spatial information on a single cover type. For example, we required a map of corn in order to estimate exposure to agricultural chemicals for an environmental...
A definitive calibration record for the Landsat-5 thematic mapper anchored to the Landsat-7 radiometric scale
P. M. Teillet, D. L. Helder, T.A. Ruggles, R. Landry, F.J. Ahern, N.J. Higgs, J. Barsi, G. Chander, B. L. Markham, J. L. Barker, K. J. Thome, J. R. Schott, Frank Don Palluconi
2004, Canadian Journal of Remote Sensing (30) 631-643
A coordinated effort on the part of several agencies has led to the specification of a definitive radiometric calibration record for the Landsat-5 thematic mapper (TM) for its lifetime since launch in 1984. The time-dependent calibration record for Landsat-5 TM has been placed on the same radiometric scale as the...
Comparison of AVIRIS and Landsat ETM+ detection capabilities for burn severity
Jan W. Van Wagtendonk, Ralph R. Root, Carl H. Key
2004, Remote Sensing of Environment (92) 397-408
Our study compares data on burn severity collected from multi-temporal Airborne Visible and Infrared Imaging Spectrometer (AVIRIS) with similar data from the Enhanced Thematic Mapper Plus (ETM+) using the differenced Normalized Burn Ratio (dNBR). Two AVIRIS and ETM+ data acquisitions recorded surface conditions immediately before the Hoover Fire began to...
The role of fire and fire management in the invasion of nonnative plants
Kyle E. Merriam, Thomas W. McGinnis, Jon E. Keeley
2004, Park Science (22) 32-36, 52
Spacecraft imagery, especially from the National Atmospheric and Oceanic Administration's Improved TIROS (Television Infra-Red Observational Satellite) Operational Satellites, permits timely evaluations of snow and ice conditions encountered by arctic nesting geese. Imagery from the TIROS satellite for 5 wide]y scattered locations in arctic North America was obtained for three...
Visual enhancement of unmixed multispectral imagery using adaptive smoothing
G.P. Lemeshewsky
Z.-U. Rahman, R.A. Schowengerdt, S.E. Reichenbach, editor(s)
2004, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
Adaptive smoothing (AS) has been previously proposed as a method to smooth uniform regions of an image, retain contrast edges, and enhance edge boundaries. The method is an implementation of the anisotropic diffusion process which results in a gray scale image. This paper discusses modifications to the AS method for...
Has the conversion of natural wetlands to agricultural land increased the incidence and severity of damaging freezes in south Florida?
C. H. Marshall, R.A. Pielke Sr., L. T. Steyaert
2004, Monthly Weather Review (132) 2243-2258
On several occasions, winter freezes have wrought severe destruction on Florida agriculture. A series of devastating freezes around the turn of the twentieth century, and again during the 1980s, were related to anomalies in the large-scale flow of the ocean–atmosphere system. During the twentieth century, substantial areas of wetlands in...
Contemporary carbon dynamics in terrestrial ecosystems in the Southeastern Plains of the United States
S. Liu, Thomas R. Loveland, R.M. Kurtz
2004, Environmental Management (33) S442-S456
Quantifying carbon dynamics over large areas is frequently hindered by the lack of consistent, high-quality, spatially explicit land use and land cover change databases and appropriate modeling techniques. In this paper, we present a generic approach to address some of these challenges. Land cover change information in the Southeastern Plains...
Cross calibration of the Landsat-7 ETM+ and EO-1 ALI sensor
G. Chander, D. J. Meyer, D. L. Helder
2004, IEEE Transactions on Geoscience and Remote Sensing (42) 2821-2831
As part of the Earth Observer 1 (EO-1) Mission, the Advanced Land Imager (ALI) demonstrates a potential technological direction for Landsat Data Continuity Missions. To evaluate ALI's capabilities in this role, a cross-calibration methodology has been developed using image pairs from the Landsat-7 (L7) Enhanced Thematic Mapper Plus (ETM+) and...
Landsat-5 TM reflective-band absolute radiometric calibration
G. Chander, D. L. Helder, B. L. Markham, J.D. Dewald, E. Kaita, K. J. Thome, E. Micijevic, T.A. Ruggles
2004, IEEE Transactions on Geoscience and Remote Sensing (42) 2747-2760
The Landsat-5 Thematic Mapper (TM) sensor provides the longest running continuous dataset of moderate spatial resolution remote sensing imagery, dating back to its launch in March 1984. Historically, the radiometric calibration procedure for this imagery used the instrument's response to the Internal Calibrator (IC) on a scene-by-scene basis to determine...
Assessing land cover performance in Senegal, West Africa using 1-km integrated NDVI and local variance analysis
M.E. Budde, G. Tappan, James Rowland, J. Lewis, L.L. Tieszen
2004, Journal of Arid Environments (59) 481-498
The researchers calculated seasonal integrated normalized difference vegetation index (NDVI) for each of 7 years using a time-series of 1-km data from the Advanced Very High Resolution Radiometer (AVHRR) (1992-93, 1995) and SPOT Vegetation (1998-2001) sensors. We used a local variance technique to identify each pixel as normal or either...
Edwards plateau: Analysis of land cover trends
B.A. Friesen, D.J. Hester, K.A. Casey
2004, Conference Paper, International Geoscience and Remote Sensing Symposium (IGARSS)
The Land Cover Trends project studies the rates, causes, and consequences of contemporary (1973-2000) change in land use and land cover in the United States on an ecoregional basis. The Edwards Plateau ecoregion is the focus of this report. Landsat imagery from five dates during a nearly 30-year period are...
Landsat TM inventory and assessment of waterbird habitat in the southern altiplano of South America
T.P. Boyle, S.M. Caziani, R.G. Waltermire
2004, Wetlands Ecology and Management (12) 563-573
The diverse set of wetlands in southern altiplano of South America supports a number of endemic and migratory waterbirds. These species include endangered endemic flamingos and shorebirds that nest in North America and winter in the altiplano. This research developed maps from nine Landsat Thematic Mapper...
Ground-water pumpage and artificial recharge estimates for calendar year 2000 and average annual natural recharge and interbasin flow by hydrographic area, Nevada
Thomas J. Lopes, David M. Evetts
2004, Scientific Investigations Report 2004-5239
Nevada's reliance on ground-water resources has increased because of increased development and surface-water resources being fully appropriated. The need to accurately quantify Nevada's water resources and water use is more critical than ever to meet future demands. Estimated ground-water pumpage, artificial and natural recharge, and interbasin flow can be used...
Landsat-5 Thematic Mapper outgassing effects
D. L. Helder, E. Micijevic
2004, IEEE Transactions on Geoscience and Remote Sensing (42) 2717-2729
A periodic 3% to 5% variation in detector response affecting both image and internal calibrator (IC) data has been observed in bands 5 and 7 of the Landsat-5 Thematic Mapper. The source for this variation is thought to be an interference effect due to buildup of an ice-like contaminant film...
Thematic accuracy of the 1992 National Land-Cover Data for the western United States
J.D. Wickham, S.V. Stehman, J.H. Smith, L. Yang
2004, Remote Sensing of Environment (91) 452-468
The MultiResolution Land Characteristics (MRLC) consortium sponsored production of the National Land Cover Data (NLCD) for the conterminous United States, using Landsat imagery collected on a target year of 1992 (1992 NLCD). Here we report the thematic accuracy of the 1992 NLCD for the six western mapping regions. Reference data...
Using lidar and effective LAI data to evaluate IKONOS and Landsat 7 ETM+ vegetation cover estimates in a ponderosa pine forest
X. Chen, Lee Vierling, E. Rowell, Tom DeFelice
2004, Remote Sensing of Environment (91) 14-26
Structural and functional analyses of ecosystems benefit when high accuracy vegetation coverages can be derived over large areas. In this study, we utilize IKONOS, Landsat 7 ETM+, and airborne scanning light detection and ranging (lidar) to quantify coniferous forest and understory grass coverages in a ponderosa pine (Pinus ponderosa) dominated...
A geometric performance assessment of the EO-1 advanced land imager
James C. Storey, M.J. Choate, D. J. Meyer
2004, IEEE Transactions on Geoscience and Remote Sensing (42) 602-607
The Earth Observing 1 (EO-1) Advanced Land Imager (ALI) demonstrates technology applicable to a successor system to the Landsat Thematic Mapper series. A study of the geometric performance characteristics of the ALI was conducted under the auspices of the EO-1 Science Validation Team. This study evaluated ALI performance with respect...
Non-invasive exploration in an environmentally sensitive world
K.E. Livo, D. H. Knepper Jr.
2004, Conference Paper, 2004 SME Annual Meeting Preprints
Modern remote sensing provides a means for locating and characterizing exposed mineralized systems in many parts of the world. These capabilities are non-invasive and help target specific areas for more detailed exploration. An example of how remote sensing technology can be used is evident from a study of the Questa...