PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM INSTRUMENT_HOST_NAME = "PHOENIX" INSTRUMENT_NAME = "METEOROLOGY SUITE, LIDAR" MISSION_PHASE_NAME = "PRIMARY MISSION" OBJECT = TEXT INTERCHANGE_FORMAT = ASCII PUBLICATION_DATE = 2009-04-29 NOTE = "PHOENIX MET LIDAR ARCHIVE NOTES ON DATA" END_OBJECT = TEXT END LIDAR OPERATIONS WITH KNOWN T0 MISMATCH ERRORS LS008***_00896917626_1191M1 LS020***_00897991880_128BM1 LS035***_00899336287_13FBM1 LS058***_00901378478_1689M1 LS069***_00902345921_17D4M1 LS070***_00902432071_1800M1 LS072***_00902618010_183EM1 LS074***_00902796017_187FM1 LS075***_00902850740_18A5M1 LS096***_00904769867_1B43M1 LS103***_00905371123_1C0AM1 LS117***_00906587011_1D83M1 LS118***_00906663579_1DBDM1 LIDAR OPERATIONS WITH LOST TIMESTAMP/TEMPERATURE DATA LS032***_00899080032_13B5M1 LS032***_00899080032_13B6M1 Incorrect values in release 1 and 2 (LS0001 and LS0002): LOCAL_TRUE_SOLAR_TIME Values for LOCAL_TRUE_SOLAR_TIME (LTST) were incorrectly given values of Local Mean Solar Time (LMST) to mark the commencement of data collection within each data product LBL file. Furthermore, it was discovered that values of LMST employed in planning of Phoenix operations are slightly different to values calculated using algorithms such as Mars24. This is because the mission epoch was set from the expected landing site longitude of 126.65, whereas the actual landing site longitude was 125.75. LMST is thus calculated from 126.65, while LTST from 125.75. Corrections to the MET data archive were calculated from UTC employing the Mars24 algorithm (provided as an Appendix in the updated DPSIS document) and both LTST and LMST start times are now provided. Users should also use caution when comparing times with other Phoenix payloads, as different algorithms may provide differing results for Mars time, while UTC is the standard across all instruments. This change has been applied to Release 3 (LS0003), and files with the version number incremented (LS******_###########_$$$$M1) have correct values.