Input contract
Acquire
Collect monthly Level-2 GSM Stokes coefficients and product metadata.
Read related noteWorkflow
GRACE Level-2 Processing Pipeline
A traceable path from monthly gravity-field coefficients to validated products. This page focuses on the scientific and software workflow required to transform monthly GSM spherical harmonics into auditable EWH and TWSA products.
Correction contract
Preprocess
Apply low-degree replacement, GIA correction, background-field alignment, and anomaly baseline removal.
Read related noteFilter contract
Filter
Route de-striping, spatial smoothing, DDK, and HSAF products through explicit product tags.
Read related noteSynthesis contract
Synthesize
Transform corrected spherical harmonics into gridded equivalent water height anomalies.
Read related noteValidation contract
Validate
Check maps, basin averages, leakage correction, trends, and independent product consistency.
Read related noteConfiguration contract
Each run starts from a configuration file that records the source product, release, maximum degree, low-degree replacement, GIA model, baseline period, filter route, grid resolution, mask version, and export folder.
Product routing
Gaussian, Fan, decorrelation, DDK, and HSAF outputs are kept as separate product branches. Tags such as GAUSS_300, FAN_300_P3M6, DDK4, and HSAF make figures and statistics traceable.
Validation record
Exports include map previews, basin-mean series, annual and semi-annual amplitudes, trend estimates, leakage-correction settings, comparison tables, and a processing log.
This website is organized around GRACE/GRACE-FO Level-2 processing, HSAF filtering experiments, basin-scale TWSA analysis, leakage correction, and the accompanying visualization software.
Open interactive pipeline