Atmospheric correction of visible to middle-infrared EOS-MODIS data over land surfaces: Background, operational algorithm and validation

The NASA moderate resolution imaging spectroradiometer (MODIS) instrument will provide a global and improved source of information for the study of land surfaces with a spatial resolution of up to 250 m

Uso combinado de dados NDVI/MODIS dos satélites Terra e Aqua no monitoramento multi-temporal de áreas agrícolas.

O objetivo deste estudo foi analisar a utilização combinada de dados de NDVI do sensor MODIS (Moderate-resolution Imaging Spectroradiometer) provenientes de duas plataformas orbitais - Terra e Aqua - na geração de perfis temporais em áreas agrícolas.SBSR 2013

MODIS Vegetation Workshop Report

The Land Science Team for the NASA Earth Observing System Moderate Resolution Imaging Spectroradiometer (MODIS) sensor [modis-land.gsfc.nasa.gov/] held a special workshop to present analysis of the first year (2001) of MODIS satellite data

Verificação da acurácia do mapeamento de áreas de agricultura localizadas em áreas desflorestadas na Amazônia.

Este trabalho teve por objetivo avaliar a acurácia de um método de mapeamento da agricultura em áreas desflorestadas da Amazônia, baseado nos valores máximos e mínimos de biomassa, expressos pelas imagens do índice de vegetação Normalized Difference Vegetation Index (NDVI), obtidas do sensor Moderate Resolution Imaging Spectroradiometer (Modis)

EOS Science Poster Series: ICE- Global Ice and Snow

This poster, one in a four-part series, highlights recent images from select NASA Earth Science spacecraft and showcases related research results. The back gives a brief overview of the science and missions behind NASA's study of ICE. Educational levels: Middle school, High school, Undergraduate lower division, Undergraduate upper division, Graduate or professional

MODIS Atmospheric Data Handler

The Moderate Resolution Imaging Spectroradiometer (MODIS) Atmosphere Data Handler software converts the HDF data to ASCII format, and outputs: (1) atmospheric profiles of temperature and dew point and (2) total precipitable water. Quality-control data are also considered in the export procedure

Using Dome C for Moderate Resolution Imaging Spectroradiometer Calibration Stability and Consistency

Currently, there are two nearly identical moderate resolution imaging spectroradiometer (MODIS) instruments operated in space: one on the Terra spacecraft launched in December 1999 and another on the Aqua spacecraft launched in May 2002. MODIS has 36 spectral bands with wavelengths covering from visible (VIS) to long-wave infrared (LWIR). Since launch, M0DIS observations and data products have significantly enabled studies of changes in the Earth system of land, oceans, and atmosphere. In order to maintain its on-orbit calibration and data product quality, MODIS was built with a comprehensive set of on-board calibrators. MODIS reflective solar bands (RSB) are calibrated on-orbit by a system that consists of a solar diffuser (SD) and a solar diffuser stability monitor(SDSM) on a regular basis. Its thermal emissive bands (TEB) calibration is executed on a scan-by-scan basis using an on-board blackbody (BB). The MODIS Characterization Support Team (MCST) at NASA/GSFC has been responsible for supporting sensor calibration and characterization tasks from pre-launch to post launch. In this paper,we describe current MCST efforts and progress made to examine sensor stability and intercalibration consistency using observations over Dome Concordia, Antarctica. Results show that this site can provide useful calibration reference for Earth-observing sensors

EOS Science Poster Series: AIR-Our Outer Atmosphere

This poster depicts how NASA scientists are working to understand the outer atmosphere (air). Satellite images, graphs, and pictures complement the fact-filled information. The poster can be ordered from the Web site; this site also includes PowerPoint and PDF files with the poster information. Educational levels: Middle school, High school, Undergraduate lower division, Undergraduate upper division, Graduate or professional

MODIS - Moderate Resolution Imaging Spectroradiometer: NASA's Earth Observing System

National Aeronautics and Space Administration (NASA) brochure about MODIS (Moderate Resolution Imaging Spectroradiometer)

MODIS Cloud Optical Property Retrieval Uncertainties Derived from Pixel-Level VNIR/SWIR Radiometric Uncertainties

Moderate Resolution Imaging Spectroradiometer (MODIS) retrievals of optical thickness and effective particle radius for liquid water and ice phase clouds employ a well-known VNIR/ SWIR solar reflectance technique. For this type of algorithm, we evaluate the quantitative uncertainty in simultaneous retrievals of these two cloud parameters to pixel-level radiometric calibration estimates and other fundamental (and tractable) error sources