{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:20.665330", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2025-Jan-28_to_2025-Feb-02_81.0_8.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2025010002469}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "January 28 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 02 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 52008.8109630958}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Sri Lanka"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 8.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 81.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "81.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 80.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 81.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 7.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[81.65, 8.25], [81.68, 8.18], [82.03, 8.03], [82.25, 7.5], [82.15, 7.25], [82.25, 7.0], [82.03, 6.47], [81.5, 6.25], [81.25, 6.35], [81.0, 6.25], [80.75, 6.35], [80.5, 6.25], [79.97, 6.47], [79.75, 7.0], [79.85, 7.25], [79.82, 7.32], [79.47, 7.47], [79.25, 8.0], [79.35, 8.25], [79.25, 8.5], [79.35, 8.75], [79.25, 9.0], [79.35, 9.25], [79.25, 9.5], [79.47, 10.03], [80.0, 10.25], [80.25, 10.15], [80.5, 10.25], [81.03, 10.03], [81.18, 9.68], [81.53, 9.53], [81.75, 9.0], [81.65, 8.75], [81.75, 8.5], [81.65, 8.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia", "Bay-of-Bengal", "Equatorial.Indian-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.47, 9.03], [81.0, 9.25], [81.53, 9.03], [81.75, 8.5], [81.53, 7.97], [81.0, 7.75], [80.47, 7.97], [80.25, 8.5], [80.47, 9.03]]]]}, "2025-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.97, 8.47], [79.75, 9.0], [79.97, 9.53], [80.5, 9.75], [81.03, 9.53], [81.18, 9.18], [81.53, 9.03], [81.75, 8.5], [81.65, 8.25], [81.68, 8.18], [82.03, 8.03], [82.25, 7.5], [82.03, 6.97], [81.68, 6.82], [81.53, 6.47], [81.0, 6.25], [80.75, 6.35], [80.5, 6.25], [79.97, 6.47], [79.75, 7.0], [79.97, 7.53], [80.38, 7.7], [80.25, 8.0], [80.35, 8.25], [80.32, 8.32], [79.97, 8.47]]]]}, "2025-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.75, 8.5], [79.85, 8.75], [79.75, 9.0], [79.97, 9.53], [80.5, 9.75], [81.03, 9.53], [81.18, 9.18], [81.53, 9.03], [81.75, 8.5], [81.65, 8.25], [81.68, 8.18], [82.03, 8.03], [82.25, 7.5], [82.15, 7.25], [82.25, 7.0], [82.03, 6.47], [81.5, 6.25], [81.25, 6.35], [81.0, 6.25], [80.75, 6.35], [80.5, 6.25], [79.97, 6.47], [79.75, 7.0], [79.96, 7.5], [79.75, 8.0], [79.85, 8.25], [79.75, 8.5]]]]}, "2025-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 8.5], [79.35, 8.75], [79.25, 9.0], [79.35, 9.25], [79.25, 9.5], [79.47, 10.03], [80.0, 10.25], [80.25, 10.15], [80.5, 10.25], [81.03, 10.03], [81.18, 9.68], [81.53, 9.53], [81.75, 9.0], [81.65, 8.75], [81.75, 8.5], [81.65, 8.25], [81.68, 8.18], [82.03, 8.03], [82.25, 7.5], [82.15, 7.25], [82.25, 7.0], [82.03, 6.47], [81.5, 6.25], [81.25, 6.35], [81.0, 6.25], [80.75, 6.35], [80.5, 6.25], [79.97, 6.47], [79.75, 7.0], [79.85, 7.25], [79.82, 7.32], [79.47, 7.47], [79.25, 8.0], [79.35, 8.25], [79.25, 8.5]]]]}, "2025-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 8.5], [79.35, 8.75], [79.25, 9.0], [79.35, 9.25], [79.25, 9.5], [79.47, 10.03], [80.0, 10.25], [80.25, 10.15], [80.5, 10.25], [81.03, 10.03], [81.18, 9.68], [81.53, 9.53], [81.75, 9.0], [81.65, 8.75], [81.75, 8.5], [81.65, 8.25], [81.68, 8.18], [82.03, 8.03], [82.25, 7.5], [82.15, 7.25], [82.25, 7.0], [82.03, 6.47], [81.5, 6.25], [81.25, 6.35], [81.0, 6.25], [80.75, 6.35], [80.5, 6.25], [79.97, 6.47], [79.75, 7.0], [79.85, 7.25], [79.82, 7.32], [79.47, 7.47], [79.25, 8.0], [79.35, 8.25], [79.25, 8.5]]]]}, "2025-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.25, 8.5], [79.35, 8.75], [79.25, 9.0], [79.35, 9.25], [79.25, 9.5], [79.47, 10.03], [80.0, 10.25], [80.25, 10.15], [80.5, 10.25], [81.03, 10.03], [81.18, 9.68], [81.53, 9.53], [81.75, 9.0], [81.65, 8.75], [81.75, 8.5], [81.65, 8.25], [81.68, 8.18], [82.03, 8.03], [82.25, 7.5], [82.15, 7.25], [82.25, 7.0], [82.03, 6.47], [81.5, 6.25], [81.25, 6.35], [81.0, 6.25], [80.75, 6.35], [80.5, 6.25], [79.97, 6.47], [79.75, 7.0], [79.85, 7.25], [79.82, 7.32], [79.47, 7.47], [79.25, 8.0], [79.35, 8.25], [79.25, 8.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.0599397535766}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.427623466774107}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.04755045572921, 24.915599653455956, 25.503003692626976, 26.305548978319337, 26.308971210554546, 26.227182605219866]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.04755045572921, 26.5105974833171, 26.53820063273116, 27.959668731689476, 27.960290527343773, 27.80043436686202]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.9548691935898432, 1.241178625001794, 1.4265405950504715, 1.518815619539222, 1.4883792317275493, 1.3699256691175794]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.9548691935898432, 1.4684695787516375, 1.9001018986368194, 1.9930124096393342, 2.0599397535766, 1.7186038447869691]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3606406444924162, 1.5905654790613444, 1.7959419493254694, 2.010686794418734, 1.9764200280320816, 1.8326685757907126]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3606406444924162, 2.0024110299563658, 2.354191766255914, 2.6297028511193803, 2.627049631397139, 2.465833713874523]}}