Peak Cumulative (LOS)
-7.0 cm
Vertical Est. (44.2°)
-9.7 cm
3-Ref Sensitivity
[-8.0, -4.6] cm LOS
Rate (cm / 100 days)
-5.8 cm/100d
Annualized est.: -21.2 cm/yr
Latest Pair & Cumulative Summary
- Latest Consecutive Pair Step: -1.19 cm LOS (2026-10-08 to 2026-10-20 at p01: 19.275N 99.036W; cumulative at point: -6.96 cm)
- Affected Population (GHSL GHS-POP E2025, 108d eq., ≥ 0.69 cm 2σ): 3,007,595 residents (< -2 cm), 321,795 residents across 21.53 km² (< -5 cm).
Top 3 Most-Subsiding Areas
| Rank | 1 km Block Center (Lat, Lon) | Cumulative LOS | Rate |
|---|---|---|---|
| #1 | 19.2749, -99.0362 | -6.96 cm | -5.80 cm/100d |
| #2 | 19.4816, -99.0461 | -6.37 cm | -5.31 cm/100d |
| #3 | 19.4346, -99.0461 | -5.30 cm | -4.41 cm/100d |
Top 5 At-Risk Infrastructure Segments
Infrastructure corridor ranking (OSM canal/road overlay) has not been computed for this regional subset yet.
GNSS Comparison & Calibration Status
Continuous GNSS time-series validation was not bundled for this regional subset.
Cumulative Displacement Map
What This Means
- Ground in Mexico City (Mexico) subsided up to -7.0 cm LOS (-5.8 cm/100d) between 2026-06-22 and 2026-10-20, consistent with active seasonal compaction.
- About 3,007,595 residents live on ground sinking faster than 2 cm per 108 days (and 321,795 residents across 21.53 km2 faster than 5 cm per 108 days, above the 0.69 cm 2-sigma noise floor).
- No local GNSS or canal-tilt overlay is bundled for this subset; field inspection and local piezometer records are needed to confirm infrastructure impacts.
Calibration & Quality Notice (PROVISIONAL): NISAR data are provisional. Calibration and validation are carried out by the NISAR project (NASA-JPL and ISRO), not by our team.
Sources: NASA-ISRO NISAR L2 GUNW (CRID P05023 via ASF DAAC); GHSL GHS-POP E2025 R2023A (JRC, CC BY 4.0); Nevada Geodetic Laboratory GNSS; OpenStreetMap (ODbL).
Sources: NASA-ISRO NISAR L2 GUNW (CRID P05023 via ASF DAAC); GHSL GHS-POP E2025 R2023A (JRC, CC BY 4.0); Nevada Geodetic Laboratory GNSS; OpenStreetMap (ODbL).