GRACE and TRMM mission: The role of remote sensing techniques for monitoring spatio-temporal change in total water mass, Nile basin

Evolutionary analysis of the fluvial landscape provides relevant inputs for the environmental management of a territory, in such a way that the understanding of the dynamics of fluvial spaces becomes a preponderant factor in the definition of protection and management strategies. Although the development of geographic information systems is a step forward in the study of the landscape, it is necessary to establish methodological frameworks that make remote sensing techniques available at multiple spatio-temporal scales, especially in basins with high levels of intervention. In the present study, we develop a methodology for the analysis of the fluvial landscape development in the last century of a highly modified water body, through the detailed study of hydrogeomorphic elements, using remote sensing techniques including high-density surface data (LiDAR) and historical aerial imageries; when supported by fieldwork, these allow for the identification of the sequence of sedimentation–erosion zones, differentiating in detail the zones denominated as areas of current erosion, accretion zones, and historical erosion zones. An application of the methodology was carried out in the Larrodrigo stream, located in Salamanca, Spain.

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Land cover change detection using GIS and remote sensing techniques: A spatio-temporal study on Tanguar Haor, Sunamganj, Bangladesh.

2016 International Conference on Innovations in Science, Engineering and Technology (ICISET) ◽

10.1109/iciset.2016.7856482 ◽

2016 ◽

Cited By ~ 1

Author(s):

Md. Inzamul Haque ◽

Rony Basak

Keyword(s):

Remote Sensing ◽

Land Cover ◽

Change Detection ◽

Land Cover Change ◽

Gis And Remote Sensing ◽

Temporal Study ◽

Spatio Temporal ◽

Remote Sensing Techniques ◽

Land Cover Change Detection

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Resolving spatial dynamics at polar latitudes using the GROMOS-C radiometer on Svalbard and the Nordic meteor radar cluster

10.5194/egusphere-egu2020-9822 ◽

2020 ◽

Author(s):

Gunter Stober ◽

Franziska Schranz ◽

Chris Hall ◽

Alexander Kozlovsky ◽

Mark Lester ◽

...

Keyword(s):

Remote Sensing ◽

Temporal Resolution ◽

Lower Thermosphere ◽

Winter Season ◽

Spatial Characteristic ◽

Small Scale ◽

Meteor Radar ◽

Atmospheric Waves ◽

Spatio Temporal ◽

Remote Sensing Techniques

The middle polar atmosphere dynamics is driven by atmospheric waves from the planetary scale to small scale perturbation due to gravity waves. The different atmospheric waves are characterized by their temporal and spatial variability posing challenges to ground-based remote sensing techniques to disentangle and resolve the spatio-temporal ambiguity. Here we present two ground-based remote sensing techniques to resolving spatio-temporal variability at the polar middle atmosphere.Since 2017 the GROMOS-C radiometer measures ozone and winds at Ny&#197;lesund (78.9&#176;N, 11.9&#176;E) on Svalbard. The radiometer employs four beams in the cardinal directions at 22.5&#176; elevation angle to retrieve ozone profiles and winds at altitudes between 30-75 km. the temporal resolution of the ozone retrievals is 30 minutes. Further, we obtain daily mean winds. Due to the high polar latitude the spatial separation between the beams at stratospheric altitudes covers several degrees in longitude to infer spatial gradients in the ozone densities and their perturbation due to planetary waves.Another recently established ground-based remote sensing approach to retrieve the spatial characteristic at the mesosphere and lower thermosphere (MLT) is provided by the Nordic meteor radar cluster consisting of the meteor radars at Troms&#248;, Alta, Esrange, Sodankyl&#228; and on Svalbard. Since October 2019 horizontally resolved winds are obtained using a 3DVAR approach with a temporal resolution of 30 minutes and a vertical resolution of 2 km. Here we present preliminary results to infer horizontal wavelength spectra, the tidal variability as well as gravity activity of the winter season 2019/20.Both datasets are of high value for data assimilation into weather forecast and reanalysis models or for cross-comparisons and validation of meteorological analysis systems (e.g. NAVGEM-HA).

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Tropical savannas: Biomass, plant ecology, and the role of fire and soil on vegetation

Progress in Physical Geography Earth and Environment ◽

10.1177/0309133310364934 ◽

2010 ◽

Vol 34 (4) ◽

pp. 563-585 ◽

Cited By ~ 16

Author(s):

Peter Furley

Keyword(s):

Remote Sensing ◽

Plant Communities ◽

Dynamic Change ◽

Plant Ecology ◽

Individual Species ◽

Change Processes ◽

Tropical Savannas ◽

Remote Sensing Techniques ◽

Biomass Plant

Four major themes can be identified over the period 2008—2009: (1) the increasing use, sophistication and resolution of remote sensing techniques and the application of these methods to assessment of biomass, C-balance and biosphere-atmosphere interactions; (2) continued interest in dynamic change processes affecting individual species and plant communities, and the changing proportions of tree, shrub and herbaceous components; (3) the nature, impact and management of fire; and (4) increasing awareness of the importance of soils and soil moisture in shaping the nature and distribution of vegetation, particularly at local scales.

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