نتایج جستجو برای: modis sensor

تعداد نتایج: 195470  

2011
Claudia Notarnicola Daniela Di Rosa

This paper presents a cross-comparison of the data acquired by the MODIS and CloudSat sensors in order to understand the limit of the developed cloud-mask algorithm and to provide a quantitative validation assessment of cloud masks by using exclusively remotely sensed data. The analysis has been carried out by comparing both the intermediate levels of the cloud mask such as the brightness tempe...

Journal: :Remote Sensing 2014
Julia Tüshaus Olena Dubovyk Asia Khamzina Gunter Menz

Accurate monitoring of land surface dynamics using remote sensing is essential for the synoptic assessment of environmental change. We assessed a Medium Resolution Imaging Spectrometer (MERIS) full resolution dataset for vegetation monitoring as an alternative to the more commonly used Moderate-Resolution Imaging Spectroradiometer (MODIS) data. Time series of vegetation indices calculated from ...

Journal: :Geospatial health 2013
Jorge Alonso-Carné Alberto García-Martín Agustin Estrada-Peña

The modelling of habitat suitability for parasites is a growing area of research due to its association with climate change and ensuing shifts in the distribution of infectious diseases. Such models depend on remote sensing data and require accurate, high-resolution temperature measurements. The temperature is critical for accurate estimation of development rates and potential habitat ranges fo...

Journal: :Carbon Balance and Management 2007
Christopher Potter Peggy Gross Vanessa Genovese Marie-Louise Smith

BACKGROUND A simulation model that relies on satellite observations of vegetation cover from the Landsat 7 sensor and from the Moderate Resolution Imaging Spectroradiometer (MODIS) was used to estimate net primary productivity (NPP) of forest stands at the Bartlett Experiment Forest (BEF) in the White Mountains of New Hampshire. RESULTS Net primary production (NPP) predicted from the NASA-CAS...

2005
david. turner

Operational monitoring of global terrestrial gross primary production (GPP) and net primary production (NPP) is now underway using imagery from the satellite-borne Moderate Resolution Imaging Spectroradiometer (MODIS) sensor. Evaluation of MODIS GPP and NPP products will require site-level studies across a range of biomes, with close attention to numerous scaling issues that must be addressed t...

2013
Hongliang Fang Chongya Jiang Wenjuan Li Shanshan Wei Frédéric Baret Jing M. Chen Javier Garcia-Haro Shunlin Liang Ronggao Liu Ranga B. Myneni Bernard Pinty Zhiqiang Xiao Zaichun Zhu

[1] Leaf area index (LAI) is a critical variable for land surface and climate modeling studies. Several global LAI products exist, and it is important to know how these products perform and what their uncertainties are. Five major global LAI products—MODIS, GEOV1, GLASS, GLOBMAP, and JRC-TIP—were compared between 2003 and 2010 at a 0.01 spatial resolution and with a monthly time step. The daily...

2005
Chuanmin Hu Frank E. Muller-Karger Kendall L. Carder Christopher Kelble Elizabeth Johns Cynthia A. Heil

Near real-time data from the MODIS satellite sensor was used to detect and trace a harmful algal bloom (HAB), or red tide, in SW Florida coastal waters from October to December 2004. MODIS fluorescence line height (FLH in W m 2 Am 1 sr ) data showed the highest correlation with near-concurrent in situ chlorophyll-a concentration (Chl in mg m ). For Chl ranging between 0.4 to 4 mg m 3 the ratio ...

Journal: :Remote Sensing 2010
Quazi K. Hassan Charles P.-A. Bourque

Leaf area index (LAI) is one of the most commonly used ecological variables in describing forests. Since 2000, 1-km resolution Moderate Resolution Imaging Spectroradiometer (MODIS)-based 8-day composites of LAI have been operationally available from the National Aeronautics and Space Administration (NASA), USA, at no cost to the user. In this paper, we present a simple protocol to enhance the s...

1997
Yoram J. Kaufman

The overall objective of this investigation is to develop algorithms, based on the unique properties of the MODIS sensor, for remote sensing of aerosol and cloud characteristics, and remote sensing of water vapor. The derived aerosol, cloud and water vapor properties will be used to develop aerosol climatology, to perform atmospheric corrections of the MODIS imagery in the solar region, as well...

Journal: :Int. J. Applied Earth Observation and Geoinformation 2012
Kridsakron Auynirundronkool Nengcheng Chen Caihua Peng Chao Yang Jianya Gong Chaowalit Silapathong

Flooding in general is insignificant event worldwide and also in Thailand. The Central plain, the Northern plain and the northeast of Thailand are frequently flooded areas, caused by yearly monsoons. The Thai government has extra expenditure to provide disaster relief and for the restoration of flood affected structures, persons, livestock, etc. Current flood detection in real time or near real...

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