نتایج جستجو برای: modis sensors

تعداد نتایج: 100953  

Journal: :IOP conference series 2023

Abstract Phenomenology of the growing season The Normalized Difference Vegetative Index (NDVI) provided by satellites was employed as a replacement for quantifying output vegetative biomass. MODIS sensors 250-m data have been utilized terrestrial ecosystem modelling and monitoring. MODIS’s land surface are credible trustworthy because to their high temporal resolution broad spectrum wavelengths...

Journal: :Remote Sensing 2017
Hyun-Ju Ban Young-Joo Kwon Hayan Shin Han-Sol Ryu Sungwook Hong

Satellite remote sensing provides significant information for the monitoring of natural disasters. Recently, on a global scale, floods have been increasing both in frequency and in magnitude. In order to map the inundation area, flooding events are investigated using unique RGB composite imagery based on the MODIS surface reflectance (MOD09GA) data obtained from the Terra satellite, which is us...

2010
Zhengchao Chen Bing Zhang Wenjuan Zhang Hao Zhang Junsheng Li

On September 6th, 2008, HJ-1A/B, which is a Micro-satellite Constellation for Environment and Disaster Monitoring, was successfully launched in China. HJ-1A/B is composed by two small satellites named as Satellite-A (HJ-1A) and Satellite-B (HJ-1B). The payloads of HJ-1A include a multispectral imager and an interferometric imaging spectrometer; the payloads of HJ-1B include an infrared scanner ...

2005
D. L. VERBYLA

The Moderate Resolution Imaging Spectroradiometer (MODIS) Leaf Area Index (LAI) Product (MOD15A2) was evaluated for the growing seasons of 2000 through 2004 in Alaska. The LAI estimate may be affected by three factors not directly related to canopy leaf area: snow melt, cloud contamination and conifer forest versus broadleaf shrub canopy type. Increases in MODIS LAI values occurred during the s...

2005
Richard Doyle

The need Although the South Sandwich Islands are uninhabited, NASA’s Terra and Aqua satellites fly overhead four times per day, skimming past at 7.5 kilometers per second and an altitude of 705 kilometers. Each spacecraft carries a Moderate Resolution Imaging Spectroradiometer (MODIS) instrument, which acquires resolution data of 250 to 1,000 meters/pixel about the islands as part of a 2,700-ki...

2017
Xingfa Gu Jing Guo Tianhai Cheng Tao Yu Hao Chen Donghai Xie Yu Wu

The analysis of the spatial–temporal variability and trends of aerosols over China based on∼11 years (February 2000 to December 2010) of Terra-Multiangle Imaging SpectroRadiometer (MISR) Level 3 aerosol products is the focus. The study shows that the MISR aerosol optical depth (AOD) is in good agreement with corresponding AOD from AERONET stations and suggests that MISR aerosol products have hi...

2013
SeungHyun Son Menghua Wang

a r t i c l e i n f o This study evaluates the performance of ocean color products derived from measurements of the Moderate Resolution Imaging Spectroradiometer (MODIS) on the satellite Aqua using the standard near-infrared (NIR) and the shortwave infrared (SWIR)-based atmospheric correction algorithms in the Chesapeake Bay. The MODIS-Aqua-derived normalized water-leaving radiances, nL w (λ), ...

2000
Shunlin Liang

Land surface broadband albedo is a critical variable for many scientific applications. High-resolution narrowband satellite observations contain important information that enables us to map land surface albedo globally, and validate the coarse-resolution albedo products from the broadband sensors using ground `̀ point/plot'' measurements. However, the conversions from narrowband to broadband alb...

Journal: :IJAEIS 2013
Carole Delenne Jean-Stéphane Bailly Michel Deshayes

Drought alert systems for forest fire prevention often rely on vegetation water content (VWC) monitoring which is a key parameter in forest fire hazard. In southern France, VWC is up to now monitored through regular field surveys. Thanks to the theoretical sensitivity of shortwave infrared reflectance to VWC, MODIS satellite data are potentially able to monitor VWC depending on plant species VW...

2007
G. Hong Y. Zhang A. Zhang F. Zhou J. Li

Agricultural land use mapping and change detection are important for environmental assessment and crop yield estimation. An effective mapping and change detection of crop land use requires large image coverage with sufficient resolutions in spatial, spectral and temporal dimensions. But few earth observation sensors can solely collect image data that meet all these requirements. The MODIS (Mode...

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