Nsf Epscor Environmental Monitoring In Nevada

Transcript

NSF EPSCoR Environmental Monitoring in Nevada - Remote Station Design, Data Acquisition cqu s t o and a d Data ata Transport a spo t Scotty Strachan*, Brian Bird*, Richard Jasoni, and David Simeral Station Objectives: Support Current Research and Future Experiments • Baseline atmospheric, p ecological, g and hydrological y g monitoringg • Provide power generation and communications capability • Plan for future experiments and monitoring additions J. Arnone, D. Simeral, L. Wable Sensor testing at DRI Photos: David Simeral Nevada Transect Infrastructure Wireless Radio Communications: • TCP/IP (Ethernet) (Eth t) and d RS RS-232 232 (Serial) (S i l) • Rugged, Low Power Consumption • Long range performance in crowded RF environments Afar Communications Ethernet Bridge • 900mhz & 2.4ghz TCP/IP, direct sequence spread-spectrum • 4Mbps 2-way throughput • 50mi+ 50 i range • PtP, PtMP, Linear, Mesh/Tree, Roaming topologies • < 5 watts power consumption • -40 to +70C operational limits Communications Data Formats and Information R ti l Retrieval  Signal Measurement Frequency  Data Storage  Quality Control  Data Retrieval Signal Measurement Frequency  The network will provide continuous observations of ecosystem level exchanges of energy and monitoring of meteorological, soil and vegetative changes. changes  Half-hourly and hourly diurnal observations  Temperature, dew point, wind speed, atm. pressure, etc.  Synoptic S ti weather th observations b ti  Periodic (3-6 hour interval) as defined by WMO.  Real-time and half-hourly  Web W b camera  Seasonal to Interannual Data storage & Quality Control  2 GB memory cards per logger  3 logger/ site x 14 sites = 84GB = ~12.18 billion data points!  1 data point (ASCII) represents ~7 bytes Data Quality:  Data Ranges (Plausibility)  Minimum and maximum value for each sensor  Sensor behavior  Battery B voltage l flflag  Minimum voltage before logger failure *Regular site visit/maintenance schedule Data Retrieval: Ethernet FTP  Code each logger to transmit to a UNR server over the internet  FTPclient(UNR IP, user, pw) “CR Basic” , , ) o Send ((table 1,2,…) UNR Cyberinfrastructure Webcam Broadband Provider Internet Router/Repeater Logger Logger Logger Wireless TCP/IP Ethernet Cat5 cable Data Retrieval: TCP/IP option  Setup servers at UNR to collect data via Webcam UNR Cyberinfrastructure Broadband Provider Internet Router/Repeater NL1xx Logger Wireless TCP/IP Ethernet Cat5 cable Spread Spectrum Radio L Logger NL100 GOES –A Remote Location Option p  Geostationary Operational Environmental Satellites (GOES) is managed by the NOAA/National Environmental Satellite Data Information Service (NESDIS).  Satellite telemetry option when modem and RF are impractical  Southern transect, Site 5 (Hayford Peak)  Eastern transect, Sites 2, 3 & 7 (1 Montane & 2 subalpines)  Two GOES satellites follow earths orbit  GOES East 135˚ and GOES West 75˚ longitude g  Simply point GOES antenna at a fixed location in the sky GOES Limitations  Max 28 days between fixes  Transmission rates 48dp/hr (practical limit)  ASCII only  No imagery g y transmission  One-way communication – no control Questions?