نتایج جستجو برای: modis

تعداد نتایج: 7731  

2001
Andrew Lenharth Richard E. Ladner Scott Hauck Eve A. Riskin Agnieszka Miguel

* Research supported by NASA Contract NAS5-00213. Abstract Moderate Resolution Imaging Spectroradiometer (MODIS) data are collected from the Terra satellite at a rate of 11 megabits/second. These data are to be transmitted to earth, stored, and analyzed by various algorithms. One solution to reducing the bandwidth and storage need for these data is to apply wavelet-based compression, which is k...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده کشاورزی 1390

بیلان انرژی تابشی دریافتی و برگشتی از کره زمین بیانگر انرژی قابل دسترس در هر بخش از سامانه زمین-اتمسفر می باشد. همچنین تابش خالص خورشیدی بنیادی ترین نیروی محرکه برای تبخیر و تعرق و تمامی کنش و واکنش های میان رویه زمین واتمسفر می باشد. این برهم کنش ها به گونه ای معنی دار بر اقلیم و دگرگونی آن سایه می افکنند. از این رو، برآورد ریزبینانه انرژی خالص در مقیاس گسترده از نظر مدل های اقلیمی جهانی و منط...

Journal: :Remote Sensing 2014
Sibo Duan Zhao-Liang Li Bo-Hui Tang Hua Wu Ronglin Tang Yuyun Bi Guoqing Zhou

The diurnal cycle of land surface temperature (LST) is an important element of the climate system. Geostationary satellites can provide the diurnal cycle of LST with low spatial resolution and incomplete global coverage, which limits its applications in some studies. In this study, we propose a method to estimate the diurnal cycle of LST at high temporal and spatial resolution from clear-sky MO...

2012
Sage Sheldon Xiangming Xiao Chandrashekhar Biradar

0924-2716/$ see front matter 2012 International http://dx.doi.org/10.1016/j.isprsjprs.2012.07.003 ⇑ Corresponding author. Address: 3100 Monitor A Oklahoma, Norman, OK 73072, USA. Tel.: +1 405 325 E-mail address: [email protected] (S. Sheldon) In this study, we evaluate a methodology that uses dual-polarization L-band SAR 500-m mosaic PALSAR imagery to identify and map forests in the Brazilian...

Journal: :IEEE Geosci. Remote Sensing Lett. 2015
Lin Qi Chuanmin Hu Jennifer Cannizzaro Alina A. Corcoran David English Chengfeng Le

1. Hu, C., B. B. Barnes, L. Qi, and A. A. Corcoran (2015). A harmful algal bloom of Karenia brevis in the northeastern Gulf of Mexico as revealed by MODIS and VIIRS: A comparison. Sensors, 15:2873-2887. 2. Hu, C., Muller-Karger, F.E., Taylor, C.,Carder, K.L., Kelble, C., Johns, E., Heil, C (2005). Red tide detection and tracing using MODIS fluorescence data: A regional example in SW Florida coa...

Journal: :Remote Sensing 2013
Guillaume Thirel Peter Salamon Peter Burek Milan Kalas

Snow is an important component of the water cycle, and its estimation in hydrological models is of great significance concerning the simulation and forecasting of flood events due to snow-melt. The assimilation of Snow Cover Area (SCA) in physical distributed hydrological models is a possible source of improvement of snowmelt-related floods. In this study, the assimilation in the LISFLOOD model...

Journal: :Remote Sensing 2013
Kenneth Grogan Rasmus Fensholt

The Moderate Resolution Imaging Spectroradiometer (MODIS) has been supplying a continuous data stream since 2000, lending to detailed time series analysis of the global terrestrial environment. This paper explores a quality anomaly present in the tropics relating to the aerosol quantity flag in the daily MODIS surface reflectance products (MOD09 series) and the 16-day Vegetation Index (VI) comp...

2003
GEORGE RIGGS DOROTHY K. HALL

A challenging problem in snow mapping is the discrimination of snow from clouds. Snow and clouds often have similar spectral reflectance features across the spectrum and may have similar temperatures making discrimination difficult. Data from the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard the NASA Earth Observing System (EOS) Terra spacecraft, is used to generate many geophys...

Journal: :Remote Sensing 2017
Qiaozhen Mu Aisheng Wu Xiaoxiong Xiong David R. Doelling Amit Angal Tiejun Chang Rajendra Bhatt

MODIS reflective solar bands are calibrated on-orbit using a solar diffuser and near-monthly lunar observations. To monitor the performance and effectiveness of the on-orbit calibrations, pseudo-invariant targets such as deep convective clouds (DCCs), Libya-4, and Dome-C are used to track the long-term stability of MODIS Level 1B product. However, the current MODIS operational DCC technique (DC...

2002
Dorothy K. Hall Rune Solberg George A. Riggs

Satellite-derived snow maps from NASA’s Earth Observing System Moderate Resolution Imaging Spectroradiometer (MODIS) have been produced since February of 2000. The global maps are available daily at 500-m resolution, and at a climate-modeling grid (CMG) resolution of 1/20o (~5.6 km). We compared the 8-day composite CMG MODIS-derived global maps from November 1, 2001, through March 21, 2002, and...

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