Utilizing satellite data of several spectral ranges for modelling the processes of water and heat regime formation of vast territories

Abstract. The treatment of scattering processes in remote sensing for interpretation of satellite data is demonstrated in the visible and microwave spectral range comparing the two spectral ranges. Analogies and distinctions in the treatment of the scattering processes are shown. Based on this cognition an approach for traffic simulation is outlined. Simulating the traffic of a part of a city, a whole city or a larger area in an acceptable time is one of the tasks in recent traffic research. One possible approach is the areal treatment of the road network. That means that single streets are not resolved but are introduced into simulations only by parameters that correspond to a specific traffic area resistance. The aim of this work is to outline such a possibility using experiences obtained from the theory of radiative transport to simulate scattering processes and applying them to the very complex system of traffic simulation.

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Volcanic SO<sub>2</sub> fluxes derived from satellite data: a survey using OMI, GOME-2, IASI and MODIS

Atmospheric Chemistry and Physics ◽

10.5194/acp-13-5945-2013 ◽

2013 ◽

Vol 13 (12) ◽

pp. 5945-5968 ◽

Cited By ~ 107

Author(s):

N. Theys ◽

R. Campion ◽

L. Clarisse ◽

H. Brenot ◽

J. van Gent ◽

...

Keyword(s):

Satellite Data ◽

Volcanic Eruptions ◽

Thermal Infrared ◽

Primary Objective ◽

High Spectral Resolution ◽

Satellite Measurements ◽

Explosive Volcanic Eruptions ◽

Spectral Ranges ◽

Remote Sensing Methods ◽

Satellite Instruments

Abstract. Sulphur dioxide (SO2) fluxes of active degassing volcanoes are routinely measured with ground-based equipment to characterize and monitor volcanic activity. SO2 of unmonitored volcanoes or from explosive volcanic eruptions, can be measured with satellites. However, remote-sensing methods based on absorption spectroscopy generally provide integrated amounts of already dispersed plumes of SO2 and satellite derived flux estimates are rarely reported. Here we review a number of different techniques to derive volcanic SO2 fluxes using satellite measurements of plumes of SO2 and investigate the temporal evolution of the total emissions of SO2 for three very different volcanic events in 2011: Puyehue-Cordón Caulle (Chile), Nyamulagira (DR Congo) and Nabro (Eritrea). High spectral resolution satellite instruments operating both in the ultraviolet-visible (OMI/Aura and GOME-2/MetOp-A) and thermal infrared (IASI/MetOp-A) spectral ranges, and multispectral satellite instruments operating in the thermal infrared (MODIS/Terra-Aqua) are used. We show that satellite data can provide fluxes with a sampling of a day or less (few hours in the best case). Generally the flux results from the different methods are consistent, and we discuss the advantages and weaknesses of each technique. Although the primary objective of this study is the calculation of SO2 fluxes, it also enables us to assess the consistency of the SO2 products from the different sensors used.

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Modeling of the process of heat regime formation in the irradiation area of infrared heater

Budownictwo o Zoptymalizowanym Potencjale Energetycznym ◽

10.17512/bozpe.2017.2.11 ◽

2017 ◽

Vol 20 (2) ◽

pp. 83-90 ◽

Cited By ~ 1

Author(s):

Vasyl Zhelykh ◽

◽

Volodymyr Shepitchak ◽

Nadiia Spodyniuk ◽

Bogdan Gulai ◽

...

Keyword(s):

Heat Regime ◽

Regime Formation ◽

Infrared Heater

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Volcanic SO<sub>2</sub> fluxes derived from satellite data: a survey using OMI, GOME-2, IASI and MODIS

Atmospheric Chemistry and Physics Discussions ◽

10.5194/acpd-12-31349-2012 ◽

2012 ◽

Vol 12 (12) ◽

pp. 31349-31412 ◽

Cited By ~ 9

Author(s):

N. Theys ◽

R. Campion ◽

L. Clarisse ◽

H. Brenot ◽

J. van Gent ◽

...

Keyword(s):

Satellite Data ◽

Large Scale ◽

Volcanic Eruptions ◽

Thermal Infrared ◽

Primary Objective ◽

High Spectral Resolution ◽

Satellite Measurements ◽

Spectral Ranges ◽

Remote Sensing Methods ◽

Satellite Instruments

Abstract. Sulphur dioxide (SO2) fluxes of active degassing volcanoes are routinely measured with ground-based equipment to characterize and monitor volcanic activity. SO2 of unmonitored volcanoes or from explosive volcanic eruptions, can be measured with satellites. However, remote-sensing methods based on absorption spectroscopy generally provide integrated amounts of already dispersed plumes of SO2 and satellite derived flux estimates are rarely reported. Here we review a number of different techniques to derive volcanic SO2 fluxes using satellite measurements of dispersed and large-scale plumes of SO2 and investigate the temporal evolution of the total emissions of SO2 for three very different volcanic events in 2011: Puyehue-Cordón Caulle (Chile), Nyamulagira (DR Congo) and Nabro (Eritrea). High spectral resolution satellite instruments operating both in the UV-visible (OMI/Aura and GOME-2/MetOp-A) and thermal infrared (IASI/MetOp-A) spectral ranges, and multispectral satellite instruments operating in the thermal infrared (MODIS/Terra-Aqua) are used. We show that satellite data can provide fluxes with a sampling of a day or less (few hours in the best case). Generally the flux results from the different methods are consistent, and we discuss the advantages and weaknesses of each technique. Although the primary objective of this study is the calculation of SO2 fluxes, it also enables to assess the consistency of the SO2 products from the different sensors used.

Download Full-text