نتایج جستجو برای: سنجندة modis

تعداد نتایج: 7788  

2009
Milton Kampel João Antônio Lorenzzetti Cristina Maria Bentz Raul A. Nunes Rodolfo Paranhos Frederico M. Rudorff Alexandre Tadeu Politano

Comparisons between in situ measurements of surface chlorophyll-a concentration (CHL) and ocean color remote sensing estimates were conducted during an oceanographic cruise on the Brazilian Southeastern continental shelf and slope, Southwestern South Atlantic. In situ values were based on fluorometry, above-water radiometry and lidar fluorosensor. Three empirical algorithms were used to estimat...

Journal: :Environmental management 2007
Ramesh Sivanpillai Alexandre V Latchininsky

Reed beds of Phragmites australis in the River Amudarya delta near the Aral Sea constitute permanent breeding areas of the Asian Migratory locust, Locusta migratoria migratoria. Every year, thousands of hectares are treated with broad-spectrum insecticides to prevent locust swarms from damaging crops in adjacent areas. To devise efficient locust monitoring and management plans, accurate and upd...

Journal: :Remote Sensing 2016
Mathias Disney Jan-Peter Muller Saïd Kharbouche Thomas Kaminski Michael Voßbeck Philip Lewis Bernard Pinty

We present the first comparison between new fAPAR and LAI products derived from the GlobAlbedo dataset and the widely-used MODIS fAPAR and LAI products. The GlobAlbedo-derived products are produced using a 1D two-stream radiative transfer (RT) scheme designed explicitly for global parameter retrieval from albedo, with consistency between RT model assumptions and observations, as well as with ty...

Journal: :Journal of environmental management 2007
R Liu J M Chen J Liu F Deng R Sun

An operational system was developed for mapping the leaf area index (LAI) for carbon cycle models from the moderate resolution imaging spectroradiometer (MODIS) data. The LAI retrieval algorithm is based on Deng et al. [2006. Algorithm for global leaf area index retrieval using satellite imagery. IEEE Transactions on Geoscience and Remote Sensing, 44, 2219-2229], which uses the 4-scale radiativ...

2012
K. Andrea Scott Tom Carrieres

In this paper, sea ice thickness values are calculated for a region along the east coast of Canada using data from two sensors representative of those available for operational data assimilation. Data from the first sensor, the Moderate Resolution Imaging Spectroradiometer (MODIS), is used to calculate the ice thickness using a heat balance equation. Relationships between the MODIS ice thicknes...

2003
Y. Tian R. E. Dickinson L. Zhou X. Zeng Y. Dai R. B. Myneni Y. Knyazikhin X. Zhang M. Friedl H. Yu W. Wu M. Shaikh

[1] This paper compares by land cover type seasonal and spatial variations of MODIS leaf area index (LAI) and fraction of photosynthetically active radiation (0.4–0.7 mm) absorbed by vegetation (FPAR) from 2.5 years with those from the Common Land Model (CLM) and investigates possible reasons for notable differences. The FPAR value is mainly determined by LAI in MODIS and both LAI and stem area...

2007
Zhengming Wan

This paper discusses the lessons learned from analysis of the Moderate Resolution Imaging Spectroradiometer (MODIS) Land-Surface Temperature/Emissivity (LST) products in the current (V4) and previous versions, and presents eight new refinements for V5 product generation executive code (PGE16) and the test results with real Terra and Aqua MODIS data. The major refinements include considering sur...

2014
Delan Xiong

Since the remote sensing data of MODIS has some advantages of short detection period, wide coverage and open access, it is suitable for large-scale, dynamic agricultural remote sensing monitoring. According to the application requirements of winter wheat acreage extracting in Huang-Huai region, this article analyzes the features of MODIS data and phenological characteristics of crops. Three kin...

2001
P. J. Minnett R. H. Evans

The Moderate Resolution Imaging Spectroradiometer (MODIS) on the NASA Earth Observing System satellites Terra and Aqua include infrared bands that are designed for the accurate measurement of sea-surface temperature (SST). In addition to the conventional ‘split-window’ bands in the 10-12 μm atmospheric window (similar in spectral properties to the corresponding channels of the heritage instrume...

2017
Kohei Arai

Prediction method for large diatom appearance in winter with meteorological data and MODIS derived turbidity and chlorophyll-a in Ariake Bay Area in Japan is proposed. Mechanism for large diatom appearance in winter is discussed with the influencing factors, meteorological condition and in-situ data of turbidity, chlorophyll-a data with the measuring instruments equipped at the Saga University ...

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