Approach for the long-term spatial and temporal evaluation of ocean color satellite data products in a coastal environment

2007 ◽  
Author(s):  
P. Jeremy Werdell ◽  
Bryan A. Franz ◽  
Sean W. Bailey ◽  
Lawrence W. Harding, Jr. ◽  
Gene C. Feldman
Keyword(s):  
Satellite Data ◽  
Ocean Color ◽  
Coastal Environment ◽  
Data Products

scholarly journals An Assessment of New Satellite Data Products for the Development of a Long-term Global Solar Resource At 10-100 km

2016 ◽  
Author(s):  
Paul W Stackhouse ◽  
Richard Perez ◽  
Manajit Sengupta ◽  
Kenneth Knapp ◽  
J. Colleen Mikovitz ◽  
...  
Keyword(s):  
Satellite Data ◽  
Data Products ◽  
Solar Resource

scholarly journals Archiving and Managing Remote Sensing Data using State of the Art Storage Technologies

2014 ◽  
Vol XL-8 ◽  
pp. 1153-1158
Author(s):  
B. Lakshmi ◽  
C. Chandrasekhara Reddy ◽  
S. V. S. R. K. Kishore
Keyword(s):  
Remote Sensing ◽  
Data Processing ◽  
Satellite Data ◽  
High Speed ◽  
Remote Sensing Data ◽  
Multiple Systems ◽  
Sensing Data ◽  
Ground Segment ◽  
Data Products

Integrated Multi-mission Ground Segment for Earth Observation Satellites (IMGEOS) was established with an objective to eliminate human interaction to the maximum extent. All emergency data products will be delivered within an hour of acquisition through FTP delivery. All other standard data products will be delivered through FTP within a day. The IMGEOS activity was envisaged to reengineer the entire chain of operations at the ground segment facilities of NRSC at Shadnagar and Balanagar campuses to adopt an integrated multi-mission approach. To achieve this, the Information Technology Infrastructure was consolidated by implementing virtualized tiered storage and network computing infrastructure in a newly built Data Centre at Shadnagar Campus. One important activity that influences all other activities in the integrated multi-mission approach is the design of appropriate storage and network architecture for realizing all the envisaged operations in a highly streamlined, reliable and secure environment. Storage was consolidated based on the major factors like accessibility, long term data protection, availability, manageability and scalability. The broad operational activities are reception of satellite data, quick look, generation of browse, production of standard and valueadded data products, production chain management, data quality evaluation, quality control and product dissemination. For each of these activities, there are numerous other detailed sub-activities and pre-requisite tasks that need to be implemented to support the above operations. <br><br> The IMGEOS architecture has taken care of choosing the right technology for the given data sizes, their movement and long-term lossless retention policies. Operational costs of the solution are kept to the minimum possible. Scalability of the solution is also ensured. The main function of the storage is to receive and store the acquired satellite data, facilitate high speed availability of the data for further processing at Data Processing servers and help to generate data products at a rate of about 1000 products per day. It also archives all the acquired data on tape storage for long-term retention and utilization. Data sizes per satellite pass range from hundreds of megabytes to tens of gigabytes <br><br> The images acquired from remote sensing satellites are valuable assets of NRSC and are used as input for further generation of different types of user data products through multiple Data Processing systems. Hence, it is required to collect and store the data within a shared, high speed repository concurrently accessible by multiple systems. After the raw imagery is stored on a high-speed repository, the images must be processed in order for them to be useful for value-added processing or for imagery analysts. The raw image file has to be copied on to data processing servers for further processing. Given the large file sizes, it is impractical to transfer these files to processing servers via a local area network. Even at gigabit Ethernet rates (up to 60 MB/s), a 5 GB file will take at least 83 seconds. For this reason, it is useful to employ a shared file system which allows every processing system to directly access the same pool where raw images were stored. Concurrent access by multiple systems is ensured for processing and generation of data products. With the above reasons, it was chosen to have high speed disk arrays for acquisition and processing purposes and tape based storage systems for long-term huge data (Peta Bytes) archival in a virtualized multitier storage architecture. <br><br> This paper explains the architecture involved in a virtualized tiered storage environment being used for acquisition, processing and archiving the remote sensing data. It also explains the data management aspects involved in ensuring data availability and archiving Peta bytes sized, remote sensing data acquired over the past 40 years.

Long-term monitoring of ocean deep convection using multisensors altimetry and ocean color satellite data

2017 ◽  
Vol 122 (2) ◽  
pp. 1457-1475 ◽  
Author(s):  
Marine Herrmann ◽  
Pierre-Amael Auger ◽  
Caroline Ulses ◽  
Claude Estournel
Keyword(s):  
Satellite Data ◽  
Deep Convection ◽  
Ocean Color ◽  
Long Term Monitoring ◽  
Term Monitoring

scholarly journals Performance metrics for the assessment of satellite data products: an ocean color case study

2018 ◽  
Vol 26 (6) ◽  
pp. 7404 ◽  
Author(s):  
Bridget N. Seegers ◽  
Richard P. Stumpf ◽  
Blake A. Schaeffer ◽  
Keith A. Loftin ◽  
P. Jeremy Werdell
Keyword(s):  
Satellite Data ◽  
Performance Metrics ◽  
Ocean Color ◽  
Data Products

scholarly journals A database of global reference sites to support validation of satellite surface albedo datasets (SAVS 1.0)

2016 ◽  
Vol 8 (2) ◽  
pp. 425-438 ◽  
Author(s):  
Alexander Loew ◽  
Ralf Bennartz ◽  
Frank Fell ◽  
Alessio Lattanzio ◽  
Marie Doutriaux-Boucher ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Satellite Data ◽  
Surface Albedo ◽  
Reference Sites ◽  
Global Database ◽  
Term Stability ◽  
Long Term Stability ◽  
Data Products

Abstract. Validating the accuracy and long-term stability of terrestrial satellite data products necessitates a network of reference sites. This paper documents a global database of more than 2000 sites globally which have been characterized in terms of their spatial heterogeneity. The work was motivated by the need for potential validation sites for geostationary surface albedo data products, but the resulting database is useful also for other applications. The database (SAVS 1.0) is publicly available through the EUMETSAT website (http://savs.eumetsat.int/, doi:10.15770/EUM_SEC_CLM_1001). Sites can be filtered according to different criteria, providing a flexible way to identify potential validation sites for further studies and a traceable approach to characterize the heterogeneity of these reference sites. The present paper describes the detailed information on the generation of the SAVS 1.0 database and its characteristics.

A multi-sensor approach for the on-orbit validation of ocean color satellite data products

2006 ◽  
Vol 102 (1-2) ◽  
pp. 12-23 ◽  
Author(s):  
Sean W. Bailey ◽  
P. Jeremy Werdell
Keyword(s):  
Satellite Data ◽  
Ocean Color ◽  
Data Products

SATELLITE DATA FOR INVESTIGATION OF RECENT STATE AND PROCESSES IN THE SIVASH BAY

2017 ◽  
Author(s):  
Ekaterina Shchurova ◽  
Ekaterina Shchurova ◽  
Rimma Stanichnaya ◽  
Rimma Stanichnaya ◽  
Sergey Stanichny ◽  
...  
Keyword(s):  
Satellite Data ◽  
Water Exchange ◽  
High Salinity ◽  
Meteorological Data ◽  
Sea Surface ◽  
Azov Sea ◽  
Seasonal Wind ◽  
Ice Regime ◽  
Very High

Sivash bay is the shallow-water lagoon of the Azov Sea. Restricted water exchange and high evaporation form Sivash as the basin with very high salinity. This factor leads to different from the Azov Sea thermal and ice regimes of Sivash. Maine aim of the study presented to investigate recent state and changes of the characteristics and processes in the basin using satellite data. Landsat scanners TM, ETM+, OLI, TIRS together with MODIS and AVHRR were used. Additionally NOMADS NOAA and MERRA meteorological data were analyzed. The next topics are discussed in the work: 1. Changes of the sea surface temperature, ice regime and relation with salinity. 2. Coastal line transformation – long term and seasonal, wind impact. 3. Manifestation of the Azov waters intrusions through the Arabat spit, preferable wind conditions.

scholarly journals Long-Term Effects of Adding Nutrients to an Oligotrophic Coastal Environment

Ecosystems ◽  
2011 ◽  
Vol 14 (3) ◽  
pp. 430-444 ◽  
Author(s):  
Anna R. Armitage ◽  
Thomas A. Frankovich ◽  
James W. Fourqurean
Keyword(s):  
Coastal Environment ◽  
Long Term Effects
Sign in / Sign up

Export Citation Format

Share Document