Gridded precipitation and atmospheric reanalysis for the 2026 pre-event and monsoon window — NASA GPM IMERG and ECMWF ERA5-Land

Outcome
Completed
Search date
Source
NASA Earthdata & ECMWF Copernicus Climate Change Service (C3S)
Reference
RUN-20260915-051
Aim
Catalog high-temporal-resolution gridded precipitation fields and thermal/freezing-level reanalysis context for the high-altitude ungauged source catchments.
Source and interface
NASA Earthdata & ECMWF Copernicus Climate Change Service (C3S) — NASA CMR and ECMWF Copernicus Climate Data Store (CDS)
Search method
Query NASA CMR for GPM IMERG Final Precipitation V07 (half-hourly and daily) for August 2026 over central Nepal; query CDS for ERA5-Land hourly surface temperature and 0°C isotherm level across the Langtang–Gyirong catchment (June–August 2026).
Criteria
Spatial extentWGS84 [84.3976, 27.7320, 85.5508, 28.3500]
Temporal window2026-06-01 through 2026-08-31.
Coverage
Atmospheric forcing and precipitation grids spanning the pre-event monsoon accumulation and the 26 August 2026 event window.
Stopping rule
Exhaust official CMR collections and CDS product endpoints for the target window and bounding box.
Result

2 authoritative meteorological resources recovered across 4 assets: NASA GPM IMERG V07 precipitation grids and ECMWF ERA5-Land temperature/freezing level series.

Resource links below show the completed assessment outcomes. The search result above records discovery at the search date.

ERA5-Land hourly surface variables: provider dataset and request route

GPM IMERG Final Precipitation V07 — Half-hourly and daily spatial precipitation over central Nepal (August 2026) — Excluded