(Added on December 1, 2023)
As in the announcement of the NASA homepage, the GPM Core Observatory satellite performed two orbit boost maneuvers on Nov. 7 and 8, 2023 that raised its altitude from 400km to 435km.
The NASA homepage also says everything is nominal.
By this orbit boost, we expect the lifespan of the GPM Core Observatory became closer to the original estimates of ending in the early 2030’s.
We already resumed providing the GMI and the GSMaP data. On the other hand, we plan to resume providing DPR products after updating the algorithms.
The schedule of the DPR data is as follows (as of November 2023).
(Added on November 1, 2023)
We suspend to provide GPM/DPR products(V07) from 8:00(UT) November 7, 2023 because of GPM orbit boost. We are going to restart providing Near-real-time products from January 2024, Standard products from March 2024.
The detail information from here
As in the announcement of the NASA GPM Website, the GPM Core Observatory satellite is scheduled to undergo a series of orbit boost maneuvers which will raise its altitude from 400km to 435km. Tentatively scheduled for Nov. 8 and 10, 2023, the goal of these boosts is to restore the GPM Core Observatory’s lifespan closer to the original estimates of ending in the early 2030’s. Recent lifespan estimates have been getting shorter due to unexpectedly high solar activity, which causes additional atmospheric drag on the spacecraft. The primary goal of restoring GPM’s lifespan is to allow the GPM mission to overlap with the satellites associated with the future Atmosphere Observing System (AOS) mission planned by NASA, JAXA, and other agencies, allowing for intercalibration of instruments between the GPM and AOS missions.
By the orbit boost of the GPM Core Observatory, following Impacts on the Dual-frequency Precipitation Radar (DPR) are expected.
Tables 1 and 2 summarize the impacts of the DPR instrument.
|Satellite altitude||Spatial resolution||Swath width|
|Nadir (Angle-bin No. 25)||Scan edge (Angle-bin No. 1, 49)|
|Satellite altitude||Spatial resolution||S/N change (total)|
|407 km||-5.0 km|
|430 km||-5.3 km||- 0.64 dB|
|450 km||-5.6 km||- 1.11 dB|
Please see also the NASA GPM website for the GPM orbit boost.