urn:nasa:pds:example.dph.sampleproducts:exampleproducts:tablechar.phx-m-tt-5-wind-vel-dir-v1.0 1.0 1.6.0.0 Product_Observational 2012-01-10 1.0 extracted metadata from PDS3 catalog and modified to comply with PDS4 Information Model Wind speed and direction estimates from images of the Phoenix Telltale sensor. 2008-08-26T20:36:36.856Z 2008-10-27T15:32:50.952Z not applicable not applicable Science Derived A table of wind speed and direction at Phoenix site on Mars. Phoenix Mission urn:nasa:pds:context:investigation:mission.phoenix::1.0 data_to_investigation Observing System for PHX+TT Phoenix Spacecraft The Phoenix lander carried the following instruments to the surface of Mars: a robotic arm and camera, a surface stereo imager, a thermal and evolved gas analyzer, a Mars descent imager, a surface properties package, a thermal and electrical conductivity probe, and a meteorological station. It operated from 25 May to 10 November 2008. urn:nasa:pds:context:instrument_host:spacecraft.phx is_instrument_host Surface Stereo Imager Instrument The Surface Stereo Imager (SSI) was the primary camera on the Phoenix spacecraft. It was a higher resolution version of the imager used for Mars Pathfinder and was provided by the University of Arizona in collaboration with the Max Planck Institute for Solar System Research. urn:nasa:pds:context:instrument:ssi.phx is_instrument Telltale Instrument The Telltale provided a coarse estimate of wind speed and direction. It was a lightweight cylinder suspended by Kevlar fibers from an arm at the top of the meteorological mast. Wind speed was estimated from the amount of deflection that was observed in images, while the wind direction was provided by the deflection direction. A mirror and a calibration cross pattern, which could be imaged simultaneously with the Telltale, were employed to increase the accuracy of the measurement. SSI and RAC cameras could both provide the images, though the SSI was typically used. Telltale was designed and at constructed at Aarhus University in Denmark. urn:nasa:pds:context:instrument:tt.phx is_instrument Mars Planet Mars is a rocky planet, fourth in order from the sun. It has an equatorial radius of approximately 3394 km, massive (but apparently inactive) volcanoes, impact craters, deep canyons, a thin atmosphere, and seasonal changes. Its atmosphere is primarily carbon dioxide with small quantities of water, both of which condense to form caps in the polar regions. Noontime surface temperatures near the equator occasionally rise above the freezing point of water, making it an interesting target for spacecraft explorations seeking signs of life beyond Earth. urn:nasa:pds:context:target:planet.mars::1.0 data_to_target urn:nasa:pds:context:investigation:mission.phoenix::1.0 data_to_associate urn:nasa:pds:context:instrument_host:spacecraft.phx data_to_associate urn:nasa:pds:context:instrument:ssi.phx data_to_associate urn:nasa:pds:context:instrument:tt.phx data_to_associate urn:nasa:pds:context:target:target.mars data_to_associate urn:nasa:pds:context:node:node.atmos data_to_associate PDS4_ATM_TABLE_CHAR.TAB ATM_PRODUCT_TABLE_CHAR_ID 2009-04-30T12:12:12Z 2024 23 5c1f6d2e359314f5d6a674739c5a9f43 PHX-M-TT-5-WIND-VEL-DIR_TABLE_CHAR 0 23 Carriage-Return Line-Feed 10 0 88 SOL 1 1 ASCII_Integer 3 %3d PHOENIX Sol number LTST 2 5 ASCII_Real 5 %5.3f Local True Solar Time LMST 3 11 ASCII_Real 9 %9.5f Local Mean Solar Time V 4 21 ASCII_Real 5 %5.3f m/s Wind speed in meters per second DV+ 5 27 ASCII_Real 4 %4.2f m/s Error in wind speed (positive) DV- 6 32 ASCII_Real 7 %7.5f m/s Error in wind speed (negative) DIR 7 40 ASCII_Real 10 %10.6f deg Wind direction in degrees given in meteorological convention (0 = from N, 90 = from E, 180 = from S, 270 = from W) DDIR 8 51 ASCII_Real 8 %8.4f deg Error in direction (given in degrees). If dv+ is larger than v, then this is set to 180 EXPOSURE TIME 9 60 ASCII_Real 7 %7.1f ms Exposure time by SSI in milliseconds FILE NAME 10 69 ASCII_File_Name 17 %-17s Image filename used for the analysis