{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:06.311825", "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": "2026-Jan-30_to_2026-Feb-04_101.5_50.5"}, "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": 2026010002653}, "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 30 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 04 2026"}, "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": 133502.1021221678}, "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": ["Mongolia", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Europe"]}, "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": 50.5}, "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": 101.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "101.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 99.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 103.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[100.0, 42.75], [99.47, 42.97], [99.25, 43.5], [99.47, 44.03], [99.82, 44.18], [99.85, 44.25], [99.82, 44.32], [99.47, 44.47], [99.25, 45.0], [99.47, 45.53], [100.0, 45.75], [100.25, 45.65], [100.5, 45.75], [100.75, 45.65], [100.88, 45.7], [100.75, 46.0], [100.93, 46.43], [100.5, 46.25], [99.97, 46.47], [99.75, 47.0], [99.88, 47.3], [99.87, 47.3], [99.75, 47.35], [99.5, 47.25], [98.97, 47.47], [98.75, 48.0], [98.85, 48.25], [98.75, 48.5], [98.85, 48.75], [98.75, 49.0], [98.85, 49.25], [98.75, 49.5], [98.85, 49.75], [98.75, 50.0], [98.97, 50.53], [99.32, 50.68], [99.47, 51.03], [99.88, 51.2], [99.75, 51.5], [99.97, 52.03], [100.32, 52.18], [100.47, 52.53], [101.0, 52.75], [101.25, 52.65], [101.5, 52.75], [102.03, 52.53], [102.18, 52.18], [102.53, 52.03], [102.75, 51.5], [102.65, 51.25], [102.75, 51.0], [102.65, 50.75], [102.75, 50.5], [102.65, 50.25], [102.75, 50.0], [102.65, 49.75], [102.68, 49.68], [102.75, 49.65], [103.0, 49.75], [103.25, 49.65], [103.5, 49.75], [104.03, 49.53], [104.25, 49.0], [104.03, 48.47], [103.68, 48.32], [103.53, 47.97], [103.18, 47.82], [103.15, 47.75], [103.25, 47.5], [103.15, 47.25], [103.25, 47.0], [103.15, 46.75], [103.25, 46.5], [103.03, 45.97], [102.63, 45.8], [102.75, 45.5], [102.65, 45.25], [102.68, 45.18], [103.03, 45.03], [103.25, 44.5], [103.03, 43.97], [102.5, 43.75], [102.0, 43.96], [101.5, 43.75], [101.25, 43.85], [101.18, 43.82], [101.03, 43.47], [100.68, 43.32], [100.53, 42.97], [100.0, 42.75]], [[101.25, 46.85], [101.18, 46.82], [101.07, 46.57], [101.32, 46.68], [101.35, 46.75], [101.32, 46.82], [101.25, 46.85]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia", "E.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.75, 49.0], [98.97, 49.53], [99.32, 49.68], [99.47, 50.03], [100.0, 50.25], [100.53, 50.03], [100.68, 49.68], [100.8, 49.63], [100.96, 50.0], [100.82, 50.32], [100.47, 50.47], [100.25, 51.0], [100.47, 51.53], [101.0, 51.75], [101.53, 51.53], [101.68, 51.18], [102.03, 51.03], [102.25, 50.5], [102.04, 50.0], [102.25, 49.5], [102.03, 48.97], [101.5, 48.75], [101.2, 48.88], [101.13, 48.7], [101.53, 48.53], [101.75, 48.0], [101.53, 47.47], [101.0, 47.25], [100.75, 47.35], [100.5, 47.25], [100.25, 47.35], [100.0, 47.25], [99.47, 47.47], [99.32, 47.82], [98.97, 47.97], [98.75, 48.5], [98.85, 48.75], [98.75, 49.0]]]]}, "2026-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.75, 48.5], [98.85, 48.75], [98.75, 49.0], [98.85, 49.25], [98.75, 49.5], [98.85, 49.75], [98.75, 50.0], [98.97, 50.53], [99.32, 50.68], [99.47, 51.03], [99.88, 51.2], [99.75, 51.5], [99.97, 52.03], [100.32, 52.18], [100.47, 52.53], [101.0, 52.75], [101.25, 52.65], [101.5, 52.75], [102.03, 52.53], [102.18, 52.18], [102.53, 52.03], [102.75, 51.5], [102.65, 51.25], [102.75, 51.0], [102.65, 50.75], [102.75, 50.5], [102.65, 50.25], [102.75, 50.0], [102.65, 49.75], [102.68, 49.68], [102.75, 49.65], [103.0, 49.75], [103.25, 49.65], [103.5, 49.75], [104.03, 49.53], [104.25, 49.0], [104.03, 48.47], [103.68, 48.32], [103.53, 47.97], [103.13, 47.8], [103.25, 47.5], [103.15, 47.25], [103.25, 47.0], [103.03, 46.47], [102.68, 46.32], [102.53, 45.97], [102.18, 45.82], [102.13, 45.7], [102.53, 45.53], [102.68, 45.18], [103.03, 45.03], [103.25, 44.5], [103.03, 43.97], [102.5, 43.75], [101.97, 43.97], [101.82, 44.32], [101.5, 44.46], [101.0, 44.25], [100.75, 44.35], [100.5, 44.25], [100.25, 44.35], [100.0, 44.25], [99.47, 44.47], [99.25, 45.0], [99.47, 45.53], [100.0, 45.75], [100.25, 45.65], [100.5, 45.75], [100.75, 45.65], [100.88, 45.7], [100.75, 46.0], [100.93, 46.43], [100.5, 46.25], [99.97, 46.47], [99.75, 47.0], [99.88, 47.3], [99.75, 47.35], [99.5, 47.25], [98.97, 47.47], [98.75, 48.0], [98.85, 48.25], [98.75, 48.5]], [[101.25, 46.85], [101.18, 46.82], [101.07, 46.57], [101.32, 46.68], [101.35, 46.75], [101.32, 46.82], [101.25, 46.85]]]]}, "2026-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.75, 48.5], [98.85, 48.75], [98.75, 49.0], [98.85, 49.25], [98.75, 49.5], [98.85, 49.75], [98.75, 50.0], [98.97, 50.53], [99.32, 50.68], [99.47, 51.03], [99.88, 51.2], [99.75, 51.5], [99.97, 52.03], [100.32, 52.18], [100.47, 52.53], [101.0, 52.75], [101.25, 52.65], [101.5, 52.75], [102.03, 52.53], [102.18, 52.18], [102.53, 52.03], [102.75, 51.5], [102.65, 51.25], [102.75, 51.0], [102.65, 50.75], [102.75, 50.5], [102.65, 50.25], [102.75, 50.0], [102.65, 49.75], [102.68, 49.68], [102.75, 49.65], [103.0, 49.75], [103.25, 49.65], [103.5, 49.75], [104.03, 49.53], [104.25, 49.0], [104.03, 48.47], [103.68, 48.32], [103.53, 47.97], [103.18, 47.82], [103.15, 47.75], [103.25, 47.5], [103.15, 47.25], [103.25, 47.0], [103.15, 46.75], [103.25, 46.5], [103.03, 45.97], [102.63, 45.8], [102.75, 45.5], [102.65, 45.25], [102.68, 45.18], [103.03, 45.03], [103.25, 44.5], [103.03, 43.97], [102.5, 43.75], [102.0, 43.96], [101.5, 43.75], [101.25, 43.85], [101.18, 43.82], [101.03, 43.47], [100.5, 43.25], [99.97, 43.47], [99.75, 44.0], [99.85, 44.25], [99.82, 44.32], [99.47, 44.47], [99.25, 45.0], [99.47, 45.53], [100.0, 45.75], [100.25, 45.65], [100.5, 45.75], [100.75, 45.65], [100.88, 45.7], [100.75, 46.0], [100.93, 46.43], [100.5, 46.25], [99.97, 46.47], [99.75, 47.0], [99.88, 47.3], [99.75, 47.35], [99.5, 47.25], [98.97, 47.47], [98.75, 48.0], [98.85, 48.25], [98.75, 48.5]], [[101.25, 46.85], [101.18, 46.82], [101.07, 46.57], [101.32, 46.68], [101.35, 46.75], [101.32, 46.82], [101.25, 46.85]]]]}, "2026-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.75, 48.5], [98.85, 48.75], [98.75, 49.0], [98.85, 49.25], [98.75, 49.5], [98.85, 49.75], [98.75, 50.0], [98.97, 50.53], [99.32, 50.68], [99.47, 51.03], [99.88, 51.2], [99.75, 51.5], [99.97, 52.03], [100.32, 52.18], [100.47, 52.53], [101.0, 52.75], [101.25, 52.65], [101.5, 52.75], [102.03, 52.53], [102.18, 52.18], [102.53, 52.03], [102.75, 51.5], [102.65, 51.25], [102.75, 51.0], [102.65, 50.75], [102.75, 50.5], [102.65, 50.25], [102.75, 50.0], [102.65, 49.75], [102.68, 49.68], [102.75, 49.65], [103.0, 49.75], [103.25, 49.65], [103.5, 49.75], [104.03, 49.53], [104.25, 49.0], [104.03, 48.47], [103.68, 48.32], [103.53, 47.97], [103.18, 47.82], [103.15, 47.75], [103.25, 47.5], [103.15, 47.25], [103.25, 47.0], [103.15, 46.75], [103.25, 46.5], [103.03, 45.97], [102.63, 45.8], [102.75, 45.5], [102.65, 45.25], [102.68, 45.18], [103.03, 45.03], [103.25, 44.5], [103.03, 43.97], [102.5, 43.75], [102.0, 43.96], [101.5, 43.75], [101.25, 43.85], [101.18, 43.82], [101.03, 43.47], [100.68, 43.32], [100.53, 42.97], [100.0, 42.75], [99.47, 42.97], [99.25, 43.5], [99.47, 44.03], [99.82, 44.18], [99.85, 44.25], [99.82, 44.32], [99.47, 44.47], [99.25, 45.0], [99.47, 45.53], [100.0, 45.75], [100.25, 45.65], [100.5, 45.75], [100.75, 45.65], [100.88, 45.7], [100.75, 46.0], [100.93, 46.43], [100.5, 46.25], [99.97, 46.47], [99.75, 47.0], [99.88, 47.3], [99.75, 47.35], [99.5, 47.25], [98.97, 47.47], [98.75, 48.0], [98.85, 48.25], [98.75, 48.5]], [[101.25, 46.85], [101.18, 46.82], [101.07, 46.57], [101.32, 46.68], [101.35, 46.75], [101.32, 46.82], [101.25, 46.85]]]]}, "2026-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.75, 48.5], [98.85, 48.75], [98.75, 49.0], [98.85, 49.25], [98.75, 49.5], [98.85, 49.75], [98.75, 50.0], [98.97, 50.53], [99.5, 50.75], [99.75, 50.65], [100.0, 50.75], [100.3, 50.63], [100.47, 51.03], [101.0, 51.25], [101.25, 51.15], [101.5, 51.25], [102.03, 51.03], [102.18, 50.68], [102.53, 50.53], [102.75, 50.0], [102.63, 49.7], [103.03, 49.53], [103.18, 49.18], [103.53, 49.03], [103.75, 48.5], [103.53, 47.97], [103.18, 47.82], [103.15, 47.75], [103.25, 47.5], [103.15, 47.25], [103.25, 47.0], [103.15, 46.75], [103.25, 46.5], [103.03, 45.97], [102.63, 45.8], [102.75, 45.5], [102.65, 45.25], [102.75, 45.0], [102.53, 44.47], [102.18, 44.32], [102.03, 43.97], [101.5, 43.75], [101.25, 43.85], [101.18, 43.82], [101.03, 43.47], [100.68, 43.32], [100.53, 42.97], [100.0, 42.75], [99.47, 42.97], [99.25, 43.5], [99.47, 44.03], [99.82, 44.18], [99.85, 44.25], [99.82, 44.32], [99.47, 44.47], [99.25, 45.0], [99.47, 45.53], [100.0, 45.75], [100.25, 45.65], [100.5, 45.75], [100.75, 45.65], [101.0, 45.75], [101.3, 45.63], [101.46, 46.0], [101.25, 46.5], [101.35, 46.75], [101.32, 46.82], [101.25, 46.85], [101.0, 46.75], [100.47, 46.97], [100.32, 47.32], [100.25, 47.35], [100.0, 47.25], [99.75, 47.35], [99.5, 47.25], [98.97, 47.47], [98.75, 48.0], [98.85, 48.25], [98.75, 48.5]]]]}, "2026-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.47, 44.03], [100.0, 44.25], [100.53, 44.03], [100.75, 43.5], [100.53, 42.97], [100.0, 42.75], [99.47, 42.97], [99.25, 43.5], [99.47, 44.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.229446387007272}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.101764015848814}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-15.136420154571567, -13.675860301235218, -12.484006200234091, -11.12339144975715, -11.333468086132086, -4.026341501871741]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-12.8504922231038, -7.985408528645792, -6.77696838378904, -5.42144877115885, -4.612750752766885, -4.026341501871741]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.356627833517422, 6.682126169614182, 7.018143920379366, 7.979200425100645, 6.7290684417516475, 5.4250713563448585]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.989015127614863, 8.6174857896319, 10.043921299794278, 11.229446387007272, 8.810387259391007, 5.4250713563448585]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3595945540403382, 1.448900218679416, 1.548458523475449, 1.7537980999334954, 1.4728997953405256, 1.5861090270807099]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5285060631811074, 1.8423265486874767, 2.028219655736637, 2.393749353676176, 1.7959242083733427, 1.5861090270807099]}}