Infrared airborne spectral measurements were collected over the Gulf Coast area during the aftermath of Hurricanes Katrina and Rita. These measurements allowed surveillance for potentially hazardous chemical vapor rel...
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ISBN:
(纸本)0819462896
Infrared airborne spectral measurements were collected over the Gulf Coast area during the aftermath of Hurricanes Katrina and Rita. These measurements allowed surveillance for potentially hazardous chemical vapor releases from industrial facilities caused by storm damage. data was collected with a mid-longwave infrared multispectral (.) imager and a hyperspectral Fourier transform infrared spectrometer operating in a low altitude aircraft. Signal processing allowed detection and identification of targeted spectral signatures in the presence of interferents, atmospheric contributions, and thermal clutter. Results confirmed the presence of a number of chemical vapors. All detection results were immediately passed along to emergency first responders on the ground. The chemical identification, location, and vapor species concentration information were used by the emergency response ground teams for identification of critical plume releases and subsequent mitigation.
Large pelagic fishes (tuna, billfish, and sharks) are being tagged with `pop-up' satellite archive electronic sensors (PSAT), which measure and log detailed data on the swimming environment of the fish, as well as...
Large pelagic fishes (tuna, billfish, and sharks) are being tagged with `pop-up' satellite archive electronic sensors (PSAT), which measure and log detailed data on the swimming environment of the fish, as well as light data, which are used to estimate the geographic locations of the fish. At predetermined periods the sensors are programmed to `pop-off' the fish, float to the sea surface, and transmit the data collected to Argos satellites, which relay the data to ground stations on earth. processing of these data provides detailed time-history information on the environment and estimated locations of individual free-swimming fish. The resulting information is then examined in conjunction with ocean measurements and data products derived from various satellite ocean sensors including sea surface temperature, ocean color, and ocean winds, as well as SODA ocean data assimilation model analyses. The fish habitats are thus defined in the context of surrounding ocean conditions, measured contemporaneously by oceanic satellite remotesensing and derived from outputs from the SODA ocean simulation model. An important aspect of this approach is that it provides the opportunity to identify, and subsequently monitor with satellite remotesensing, ocean features, processes, and properties that may play important roles in determining spatial and temporal variations in marine fish habitats. data are presented that demonstrate this approach for blue shark, Prionace glauca.
The proceedings contain 40 papers. The topics discussed include: Net-centric environmental and weather monitoring: a disruptive concept of operations;protection of passive radio frequencies used for Earth exploration ...
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The proceedings contain 40 papers. The topics discussed include: Net-centric environmental and weather monitoring: a disruptive concept of operations;protection of passive radio frequencies used for Earth exploration by satellite;routine detection and mitigation of dust with AIRS;using ABI to help HES for cloud property and atmospheric sounding retrieval;assessment of land degradation and its spatial and temporal variation in Beijing surrounding area;improving AIRS spatial co-registration by resampling;shedding new light on nocturnal monitoring of the environment with the VIRS day/night band;MODIS aerosol retrieval over urban areas;and physical retrieval of cloud-top properties using optimal spectral sampling.
Preparing for the next generation polar orbiting environmental satellite system, the NPOESS system is currently undergoing the design phase of the Program. The NPOESS Direct Readout Mission will service users in the f...
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Preparing for the next generation polar orbiting environmental satellite system, the NPOESS system is currently undergoing the design phase of the Program. The NPOESS Direct Readout Mission will service users in the field providing regional environmental coverage with two direct broadcast links, high rate data (HRD) at 20 Mbps and low rate data (LRD) at 3.88 Mbps. Contained within these two links are the suite of sensor data in order to generate 50 HRD and 29 LRD weather products via the NPOESS Field Terminal Segment software being developed for distribution to the weather community or by value added resellers.
The atmospheric Infrared Sounder (AIRS) has been operating since Sept. 2002 and AIRS radiance data is being used operationally by several weather centers. A significant fraction of AIRS observations are contaminated b...
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The atmospheric Infrared Sounder (AIRS) has been operating since Sept. 2002 and AIRS radiance data is being used operationally by several weather centers. A significant fraction of AIRS observations are contaminated by dust blowoff from arid areas. The almost continous spectral coverage of AIRS in both the 10-12 and 3.7 micron atmospheric windows allows excellent detection of the presence of dust. Dust signals can often survive the cloudclearing process used in the retrieval system for AIRS, thereby contaminating the low-altitude temperature and water vapor retrieval products. We present techniques being developed to both operationally detect and mitigate the effects of dust on AIRS retrieval products.
In this paper we review the concept of network centricity, and relate it to the evolution that is anticipated in weather and environmental operational remotesensing in the decade ahead. We provide a practical roadmap...
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In this paper we review the concept of network centricity, and relate it to the evolution that is anticipated in weather and environmental operational remotesensing in the decade ahead. We provide a practical roadmap for implementing concepts that recognize the value of legacy systems, accounting for a spectrum of different interoperability potentials of legacy and future systems, from the perspective of three communities and five levels of integration.
For the past ten years, much of the research in hyperspectral image data exploitation techniques has been focused on detection of ground targets. As a passive remotesensing technique, hyperspectral imagers have perfo...
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For the past ten years, much of the research in hyperspectral image data exploitation techniques has been focused on detection of ground targets. As a passive remotesensing technique, hyperspectral imagers have performed reasonably well in detecting the presence of a variety of objects;from crop species to land mines to mineral deposits to vehicles under camouflage. These often promising results have prompted new studies of hyperspectral remotesensing for other applications - including atmospheric monitoring. Should technologies like hyperspectral imaging prove effective in emission source monitoring, organizations interested in environmental assessment could transition from inspection using hand-held analytical instruments to a truly standoff technique. In this paper, we evaluate the utility of a set of hyperspectral exploitation techniques applied to the task of gas detection. This set of techniques is a sampling of approaches that have appeared in the literature, and all of the methods discussed have demonstrated utility in the reflective regime. Specifically, we look at signature-based detection, anomaly detection, transformations (i.e. rotations) of the spectral space, and even dedicated band combinations and scatter plots. Using real LWIR hyperspectral data recently collected on behalf of the US environmental Protection Agency, we compare performance in detecting three different industrial gases.
Two classes of cloud-cleared radiances retrieval approaches developed so far comprise the synergistic use of 1) collocated infrared and microwave measurements, and 2) collocated infrared imaging and sounding measureme...
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Two classes of cloud-cleared radiances retrieval approaches developed so far comprise the synergistic use of 1) collocated infrared and microwave measurements, and 2) collocated infrared imaging and sounding measurements that is discussed in detail in the companion paper entitle "Evaluation of Cloud-Cleared Radiances for Numerical Weather Prediction and Cloud Contaminated Sounding Applications" [1]. In that paper AIRS/AMSU and AIRS/MODIS cloud-cleared algorithms are discussed and their performance evaluated. The focus of this paper is to present additional examples and statistics for not only cloud-cleared radiances but also cloud-cleared retrieval of temperature and water vapor.
The data on spatial aerosol distribution over Western Siberia are obtained by airborne laboratory during 1983 - 1989 and 1997 - 2003. Analysis of the samples allows us to reveal time variability of the aerosol content...
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The data on spatial aerosol distribution over Western Siberia are obtained by airborne laboratory during 1983 - 1989 and 1997 - 2003. Analysis of the samples allows us to reveal time variability of the aerosol content in the lower and middle troposphere. The concentrations of Si, Al, Fe, Mg, Ca, Ti, Cu, Mn, Cr, Pb, and Ni elements, K+, Na+, Cl-, SO 42-, NO3-, and NH4 + ions, and their vertical profiles are calculated. The seasonal variability of characteristics of atmospheric aerosol concentration is also estimated.
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