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Tuesday, May 12, 2020 | History

1 edition of Airborne laser fluorosensing of surface water chlorophyll a̲ found in the catalog.

Airborne laser fluorosensing of surface water chlorophyll a̲

Airborne laser fluorosensing of surface water chlorophyll a̲

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  • 31 Currently reading

Published by Environmental Monitoring Systems Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Available to the public through the National Technical Information Service in Las Vegas, Springfield, Va .
Written in

    Subjects:
  • Remote sensing,
  • Fluorescence,
  • Cyanobacterial blooms -- Measurement,
  • Algal blooms -- Measurement,
  • Plankton blooms -- Measurement

  • Edition Notes

    Statementby M. Bristow ... [et al.]
    SeriesResearch reporting series -- EPA-600/4-79-048
    ContributionsBristow, M, Environmental Monitoring Systems Laboratory (Las Vegas, Nev.)
    The Physical Object
    Paginationx, 65 p. :
    Number of Pages65
    ID Numbers
    Open LibraryOL14213407M

    Airborne laser fluorosensor measurements of fluorophore concentrations in surface waters are highly sensitive to interference from changes in optical : Anthony Vodacek. An Overview of Remote Sensing of Chlorophyll Fluorescence Xiao-Gang Xing 12 *, Dong-Zhi Zhao 2 u, Y-Guang Liu 1, Jian-Hong Yang 2, The upward radiance reaching the water surface is a mixture of radiances from different depths and depends on the optical properties of components in waters and pure ocean water. Gordon and McCluney () defined.

    A simple model of water colour for a range of values of chlorophyll concentrations can be derived based on the work of Morel and others [2,4]. The model demonstrates the contribution of scattering and absorption by chlorophyll a and pure water in controlling the reflectance spectrum of ocean, coastal and inland by: 2.   The need for an organic paleotemperature marker Sea surface () Onshore and offshore petroleum seepage: Contrasting a conventional study in Papua New Guinea and airborne laser fluorosensing over the Arafura Sea. Aust. Petrol. Expl. Assoc. J., 31, – Treibs, S. () Chlorophyll and hemin derivatives in organic materials.

    The Online Books Page. Browsing subject area: Fluorescence (Exclude extended shelves) You can also browse an alphabetical list from this subject or from: Fluorescence. See also what's at Wikipedia, your library, or elsewhere. Broader terms: Luminescence; Radioactivity; Narrower terms: Fluorescent lighting;. The aerosol maps show average monthly aerosol amounts around the world based on observations from the MODIS sensor on NASA's Terra satellite. Satellite measurements of aerosols, called aerosol optical thickness, are based on the fact that the particles change the way the atmosphere reflects and absorbs visible and infrared light. An optical thickness of less than .


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Airborne laser fluorosensing of surface water chlorophyll a̲ Download PDF EPUB FB2

This report describes the development of an airborne laser fluorosensor for mapping the distribution of chlorophyll a_ in the surface waters of lakes, rivers, reservoirs, estuaries and coastal waters. Remote monitoring devices of this kind will Airborne laser fluorosensing of surface water chlorophyll a̲ book invaluable for rapidly assessing the concentration of.

Airborne laser fluorosensing of surface water chlorophyll a̲. Las Vegas: Environmental Monitoring Systems Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Springfield, Va.: Available to the public through the National Technical Information Service, (OCoLC) Material Type.

Airborne laser fluorosensing of surface water chlorophyll a̲ / By M. Bristow and Nev.) Environmental Monitoring Systems Laboratory (Las Vegas. Abstract "August ""U.S.

Environmental Protection Agency, Environmetal Monitoring Systems Laboratory."Includes bibliographical of access: Internet. Operational airborne hydrographic laser fluorosensing as the scattering of the laser light at the water surface and within the discussed and the limitations of laser fluorosensing of small.

Abstract. In the past decade remote sensing methods have become an important tool in oceanographic research. Utilization of optical radiometers onboard satellites for measurements of the colour of the sea has led to remarkable results over the open ocean, yielding global maps of chlorophyll content in the surface layer 1,ms arise in the interpretation of ocean Cited by: 3.

An airborne oceanographic lidar, with a frequency-tripled Q-switched Nd: YAG laser of nm, has been designed to measure chlorophyll-a (Chl-a) concentration in the sea surface layer by the Ocean Remote Sensing Institute, by: 5. Chlorophyll a and Phycocyanin from Hyperspectral Airborne and Hand-held Sensors on Lake Erie 1Andrea Vander Woude To warn water intake managers in the Western basin of Lake Erie when any bloom is present near their intake • Laerosol calculated using black surface (looking down from aircrag) • E calculated looking up from.

Chlorophyll a is the most abundant form of chlorophyll within photosynthetic organisms and, for the most part, gives plants their green color. However, there are other forms of chlorophyll, coded b, c, and d, which augment the overall fluorescent signal. This results in the surface water moving westward away from the coast (caused by Ekman transport).

As the warm, surface water moves away from the coast, Write a hypothesis to explain a possible relationship between sea surface temperature, chlorophyll a concentration and phytoplankton abundance. My hypothesis. Chlorophyll a is found in all green plants including algae.

For this reason it can be used to estimate the quantity of algae present in a water body. Chlorophyll a constitutes approximately 1 to 2% of the dry weight of planktonic algae. Level of chlorophyll a indicates the quality of a water body with respect to its fertilization.

Size: KB. ELSEVIER Use of a Ship-Borne Laser Fluorosensor for Remote Sensing of Chlorophyll a in a Coastal Environment B. Nieke,W. Vincent, J.-C. Therriault, t L. Legendre, J.-F. Berthon, and A. Condalt In eivo fluorescerwe of chlorophyll a (chl a) was mea- sured, with a ship-bor~w lidar (light detecting and romp- ing) system and with an i~ situ fluorometer and a labora- tory Cited by: 6.

Laser induced fluorescence (LIF) technique is most effective at the moment for oil pollution control on the water surface [6][7] [8] [9]. Physical basis of. An airborne laser fluorosensor for the detection of algae in the sea has been developed.

The system transmits dye laser radiation at nm and monitors the fluorescent emission. The highest chlorophyll concentrations, where tiny surface-dwelling ocean plants are thriving, are in cold polar waters or in places where ocean currents bring cold water to the surface, such as around the equator and along the shores of continents.

Laser remote sensing is an efficient, proven tool capable of providing quantitative, spatially-resolved, Real-Time data for chemical pollution, eutrophication, biomass, and hydrographic processes over large water surface areas with high spatial resolution; and is often the only solution for many environmental marine applications.

Various types of Light Detection and Cited by: 7. The laser beam is directed towards the surface of the ocean using a conical scanner leading to a surface swath width of – m at operating altitudes of – m (Hengstermann et al., ).

The LFS system was designed to discriminate petroleum oils from naturally occurring biogenic oils, classify the type of oil (light, crude, heavy Cited by: In Vivo Chlorophyll Fluorescence as a Tool for Stress Detection in Plants.

It is shown that the white light or laser-induced chlorophyll fluorescence of predarkened leaves is a very suitable tool for early stress detection in plants as well as for regeneration studies. Classification of damaged spruce stands in the Northern Black Forest Cited by: The highest chlorophyll concentrations, where tiny surface-dwelling ocean plants are thriving, are in cold polar waters or in places where ocean currents bring cold water to the surface, such as around the equator and along the shores of continents.

The polar–equator difference intensifies in the hemisphere experiencing summer. NASA first demonstrated the measurement of laser-induced chl-a fluorescence from a low-flying aircraft in the mids. Airborne laser fluorosensors were developed shortly thereafter in the USA, Canada, Germany, Italy, and Russia, and used for measuring laser-induced fluorescence of a number of marine constituents in addition to chl-a.

REMOTE SENS. ENVIRON. 76 () Airborne Discrimination Between Ice and Water: Application to the Laser Measurement of Chlorophyll-in-Water in a Marginal Ice Zone Frank E. Hoge* C. Wayne Wright NASA Goddard Space Flight Center, Wallops Flight Facility Robert N. Swift James K. Yungel EG&G Washington Analytical Services, Pocomoke, Maryland The Cited by: 5.

chlorophyll algorithms. Discrete surface samples Surface water samples were collected using Niskin bottles or buckets and were filtered immediately. Absorption spectra due to particulates, a p(k), and detritus, a d(k), were determined using the quantitative filter technique (Kiefer & SooHoo, ; Yentsch, ).

Measurements were made File Size: KB.Performance evaluation of UV sources for lidar fluorosensing. of chlorophyll content in the surface layer1,2.

the book by Measures () is recommended. Laser remote sensing is .It works by measuring the color of the ocean surface. Chlorophyll a absorbs particular wavelengths of light.

Lower concentrations of phytoplankton, and therefore chlorophyll a, result in the water appearing more purple or blue. As the concentration of phytoplankton (and chlorophyll a) increases, the water appears more green, yellow, or even Size: 1MB.