نتایج جستجو برای: سنجند modis

تعداد نتایج: 7808  

1999
D. A. Chu Y. J. Kaufman C. Ichoku L. A. Remer D. Tanré B. N Holben

[1] Aerosol optical depths (ta) are derived operationally for the first time from the MODIS (Moderate Resolution Imaging Spectroradiometer) measurements over vegetated and partially vegetated land at 0.47 and 0.66 mm wavelengths. The extensive validation made during July – September 2000 encompasses 315 co-located ta in space and time derived by MODIS and AERONET (Aerosol Robotic Network) from ...

2008
Joel S. Kuszmaul Henrique Momm Greg Easson

The SERVIR Fire Rapid Response System web site displays and distributes daily images of near-real-time MODIS data processed by the MODIS Rapid Response System. The MODIS Rapid Response System was developed by Science Systems and Applications Inc. scientists at the Goddard Space Flight Center and implanted as the SERVIR extension for the use of personnel involved in environmental monitoring and ...

2010
Hongbin Zhang Guixia Yang Qing Huang Gang Li Baorui Chen Xiaoping Xin

Based on MODIS NDVI and NOAA NDVI datum, covering the primary grassland types of Inner Mongolian in growing seasons from 2000 to 2003, this paper analyzes annual variation rule of the relationship between MODIS NDVI and NOAA NDVI datum. We use the theory of statistics to discuss the spatial scaling methods between different resolutions images of remote sensing in large-scale spatial extent. At ...

2017
Bo Han Hongpeng Ding Yingying Ma Wei Gong

Original scientific paper MODIS and CALIOP are two independent observation instruments in the A-train satellite constellation. They both provide aerosol optical depth (AOD) retrievals and scan the same points on the Earth’s surface within a two-minute interval. With different design principles, MODIS and CALIOP instruments obtain varying AOD retrieval accuracies under different conditions. In t...

2004
X. Xiong J. Sun S. Xiong W. L. Barnes

The moon is a very stable reference source that has been used for the space-borne sensors’ radiometric calibration and/or radiometric stability monitoring. In this paper, we present an approach that uses the sensors’ on-orbit lunar observations for their spatial characterization and apply the method to the MODIS instruments that are currently operating onboard NASA EOS Terra and Aqua satellites...

Journal: :Remote Sensing 2015
Pardhasaradhi Teluguntla Dongryeol Ryu Biju George Jeffrey P. Walker Hector M. Malano

Rice is one of the major crops cultivated predominantly in flooded paddies, thus a large amount of water is consumed during its growing season. Accurate paddy rice maps are therefore important inputs for improved estimates of actual evapotranspiration in the agricultural landscape. The main objective of this study was to obtain flooded paddy rice maps using multi-temporal images of Moderate Res...

2013
Yuji Sakuno Keita Makio Kazuhiko Koike Shigeru Kitahara

This study discusses the fusion of chlorophyll-a (Chl.a) estimates around Tachibana Bay (Nagasaki Prefecture, Japan) obtained from MODIS and GOCI satellite data. First, the equation of GOCI LCI was theoretically calculated on the basis of the linear combination index (LCI) method proposed by Frouin et al. (2006). Next, assuming a linear relationship between them, the MODIS LCI and GOCI LCI meth...

2011
T. Miura J. P. Turner

In this study, we used a set of hyperspectral Hyperion scenes and assessed the effects of differing spectral and spatial resolutions on MODIS-AVHRR vegetation index (VI) continuity. Hyperion scenes were processed to simulate atmospherically-corrected normalized difference vegetation index (NDVI) and 2-band enhanced vegetation index (EVI2) values at MODIS Climate Modeling Grid (CMG) and AVHRR Gl...

ژورنال: :سنجش از دور و gis ایران 0
مجید رحیم زادگان دانشگاه خواجه نصیرالدین طوسی محمدرضا مباشری دانشگاه خواجه نصیرالدین طوسی

در پژوهش حاضر روشی برای جایگزین کردن چگالی های شار تصاویر سنجنده modis با استفاده از مدل انتقال انرژی مجمع ( crtm ) که از مدل های حل معادله انتقال انرژی است، ارائه شده است. بدین منظور اندازه گیری های رادیوساند مربوط به ایستگاه سینوپتیک بندرعباس به همراه چگالی های شار اندازه گیری شده از تصاویر شب سنجنده modis مستقر بر سکوی aqua برای آب های عمیق خلیج فارس مورد استفاده قرار گرفت. بنابراین با استفا...

2010
Fang Chen Keith T. Weber Jamey Anderson Bhushan Gokhale

While validation of the MODIS fPAR product is well behind that of the LAI product, it is recently receiving more attention. In this study, MODIS fPAR and Landsat-5 TM–derived fPAR (TM fPAR) were calculated and quantitatively compared using imagery from 2005 to 2008 for the semiarid rangelands of Idaho, USA. fPAR change maps were calculated between active growth and late-summer senescence period...

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