Mission Status and QA Reports |
Historical Mission Status and QA Reports are available via PO.DAAC Drive at https://podaac-tools.jpl.nasa.gov/drive/files/allData/quikscat/ancillary/mission_status_report. All files are in tar format. Current Mission Status: The SeaWinds antenna on QuikSCAT remains in a stalled 0 RPM position. The antenna is still powered and retrieving data while in this position. L2A and L2B science data data have not been produced since 31 March 2013. |
L2B Data Gaps |
Note: The following data gaps only apply to L2B data during the prime operational phase of the mission from 23 July 1999 to 22 November 2009. Click here to view the table listing all L2B data gaps longer than 4 seconds. |
Level 1B Issues |
22 November 2009: The SeaWinds antenna spin rate began degrading substantially and officially entered into a "non-spinning" mode after orbital rev 54296. Even during this "non-spinning" mode, the antenna RPM was above 0, yet too low to fully retrieve enough observations to resolve a wind vector retrieval. 23 November 2009 (orbital rev number 54315): At 7:07 UTC, the antenna stalled to 0 RPM, and has remained stalled in a fixed-azimuth position since that time. Science data processing has been caught up through rev 54315. The latest delivery batch covering 18-22 November (revs 54240-54296) is less affected by the spin degradation, and is generally considered usable although we do advise caution. Please be advised that due to uncertain data quality, the delivery of science data products from revs 54297 up to the stall time on rev 54315 may either be delayed or unavailable for public distribution. The antenna remains powered, however the usability and quality of any retrievable data beyond the stall time on rev 54315 is highly uncertain. 29 January 2013 to 5 February 2013: Starting with orbital rev number 7909 and continuing to 71011 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. After this time, the antenna stalled to 0 RPM. 14 March 2013: Starting with orbital rev number 71536 and continuing to 71549 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. After this time, the antenna stalled to 0 RPM. 18 March 2013 to 21 March 2013: Starting with orbital rev number 71590 and continuing to 71634 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. After this time, the antenna stalled to 0 RPM. 28 March 2013 to 31 March 2013: Starting with orbital rev number 71735 and continuing to 71769 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. After this time, the antenna stalled to 0 RPM. User Advisory: Sigma-0 data in the level 1B files is only calibrated correctly in the "spinning" configuration. Data for which "non-spinning" sigma-0 values have been correctly calibrated will be released in 2016 in a simplified data format. The "non-spinning" calibration needs to adjusted to account for 1) planned changes in pointing during non spinning mode and 2) increase in effective antenna gain because there are no scan-losses in the "non spinning" configuration. |
Level 2A Issues |
12 June 2000: Near 66.6° South Latitude and 359.0° East Longitude approximately 12-15 pixels are being reported as land instead of ice. The ice mask will be fixed in upcoming data. 22 November 2009: The SeaWinds antenna spin rate began degrading substantially and officially entered into a "non-spinning" mode after orbital rev 54296. Even during this "non-spinning" mode, the antenna RPM was above 0, yet too low to fully retrieve enough observations to resolve a wind vector retrieval. This date marks the official end of the prime operational mission for wind vector retrieval and the cease of production of L2A data through 29 January 2013. 29 January 2013 to 5 February 2013: Starting with orbital rev number 7909 and continuing to 71011 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. During this time, L2A data production resumed. After this time, the antenna stalled to 0 RPM, and L2A data production ceased. 14 March 2013: Starting with orbital rev number 71536 and continuing to 71549 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. During this time, L2A data production resumed. After this time, the antenna stalled to 0 RPM, and L2A data production ceased. 18 March 2013 to 21 March 2013: Starting with orbital rev number 71590 and continuing to 71634 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. During this time, L2A data production resumed. After this time, the antenna stalled to 0 RPM, and L2A data production ceased. 28 March 2013 to 31 March 2013: Starting with orbital rev number 71735 and continuing to 71769 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. During this time, L2A data production resumed. After this time, the antenna stalled to 0 RPM, and L2A data production ceased. |
Level 2B Issues | General Usage Notes (23 July 1999 - 31 March 2013; orbital revs 430-71769):
22 November 2009: The SeaWinds antenna spin rate began degrading substantially and officially entered into a "non-spinning" mode after orbital rev 54296. Even during this "non-spinning" mode, the antenna RPM was above 0, yet too low to fully retrieve enough observations to resolve a wind vector retrieval. This date marks the official end of the prime operational mission for wind vector retrieval and the cease of production of L2B data through 29 January 2013. 29 January 2013 to 5 February 2013: Starting with orbital rev number 7909 and continuing to 71011 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. During this time, L2B Version 2 data production resumed. After this time, the antenna stalled to 0 RPM, and L2B Version 2 data production ceased. 14 March 2013: Starting with orbital rev number 71536 and continuing to 71549 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. During this time, L2B Version 2 data production resumed. After this time, the antenna stalled to 0 RPM, and L2B Version 2 data production ceased. 18 March 2013 to 21 March 2013: Starting with orbital rev number 71590 and continuing to 71634 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. During this time, L2B Version 2 data production resumed. After this time, the antenna stalled to 0 RPM, and L2B Version 2 data production ceased. 28 March 2013 to 31 March 2013: Starting with orbital rev number 71735 and continuing to 71769 the antenna resumed rotating within the nominal RPM range resulting in a transition from "non-spinning" to "spinning" mode, thus enabling a brief period of wind vector retrieval. During this time, L2B Version 2 data production resumed. After this time, the antenna stalled to 0 RPM, and L2B data production ceased. 1 April 2013: The QuikSCAT Level 2B 12.5 km dataset was reprocessed and released as Version 3. The data time series extends from 27 October 1999 to 22 November 2009. The time series has not yet been extended into the brief "spinning" modes that occurred in 2013. The Version 2 L2B 25 km and 12.5 km datasets are still available. To access the Version 3 data, please visit: https://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B_OWV_COMP_12 |
L3 issue |
22 November 2009: The SeaWinds antenna spin rate began degrading substantially and officially entered into a "non-spinning" mode after orbital rev 54296. Even during this "non-spinning" mode, the antenna RPM was above 0, yet too low to fully retrieve enough observations to resolve a wind vector retrieval. This date marks the official end of the prime operational mission for wind vector retrieval and the cease of production of Level 3 (L3) data.. |
Spacecraft and Instrument | Click here to view the table listing |