{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:05.328567", "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": "2022-Jun-26_to_2022-Jul-03_100.0_30.0"}, "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": 2022060001184}, "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": "June 26 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 03 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 187639.77828039913}, "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": ["China", "India", "Myanmar"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia", "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": 30.0}, "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": 100.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "100.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 95.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 101.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[99.03, 24.47], [98.5, 24.25], [98.25, 24.35], [98.18, 24.32], [98.03, 23.97], [97.5, 23.75], [96.97, 23.97], [96.75, 24.5], [96.96, 25.0], [96.75, 25.5], [96.97, 26.03], [97.32, 26.18], [97.35, 26.25], [97.32, 26.32], [96.97, 26.47], [96.82, 26.82], [96.75, 26.85], [96.5, 26.75], [96.25, 26.85], [96.18, 26.82], [96.03, 26.47], [95.5, 26.25], [95.25, 26.35], [95.0, 26.25], [94.47, 26.47], [94.25, 27.0], [94.47, 27.53], [94.82, 27.68], [94.96, 28.0], [94.75, 28.5], [94.97, 29.03], [95.5, 29.25], [95.75, 29.15], [96.0, 29.25], [96.53, 29.03], [96.68, 28.68], [96.75, 28.65], [97.0, 28.75], [97.25, 28.65], [97.38, 28.7], [97.25, 29.0], [97.38, 29.3], [96.97, 29.47], [96.75, 30.0], [96.85, 30.25], [96.75, 30.5], [96.85, 30.75], [96.82, 30.82], [96.75, 30.85], [96.5, 30.75], [95.97, 30.97], [95.75, 31.5], [95.97, 32.03], [96.5, 32.25], [96.75, 32.15], [97.0, 32.25], [97.25, 32.15], [97.5, 32.25], [98.03, 32.03], [98.25, 31.5], [98.15, 31.25], [98.18, 31.18], [98.53, 31.03], [98.68, 30.68], [98.8, 30.63], [98.97, 31.03], [99.5, 31.25], [99.75, 31.15], [99.82, 31.18], [99.97, 31.53], [100.5, 31.75], [100.75, 31.65], [101.0, 31.75], [101.53, 31.53], [101.75, 31.0], [101.65, 30.75], [101.75, 30.5], [101.63, 30.2], [102.03, 30.03], [102.25, 29.5], [102.03, 28.97], [101.5, 28.75], [101.25, 28.85], [101.18, 28.82], [101.03, 28.47], [100.68, 28.32], [100.54, 28.0], [100.68, 27.68], [101.03, 27.53], [101.25, 27.0], [101.03, 26.47], [100.68, 26.32], [100.65, 26.25], [100.75, 26.0], [100.53, 25.47], [100.0, 25.25], [99.75, 25.35], [99.5, 25.25], [99.2, 25.38], [99.15, 25.25], [99.25, 25.0], [99.03, 24.47]], [[98.15, 27.75], [98.18, 27.68], [98.5, 27.54], [98.88, 27.7], [98.82, 27.82], [98.47, 27.97], [98.32, 28.32], [98.25, 28.35], [98.13, 28.3], [98.25, 28.0], [98.15, 27.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau", "E.Asia", "S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.97, 26.53], [98.5, 26.75], [99.03, 26.53], [99.25, 26.0], [99.03, 25.47], [98.5, 25.25], [97.97, 25.47], [97.75, 26.0], [97.97, 26.53]]]]}, "2022-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[97.25, 25.5], [97.47, 26.03], [97.82, 26.18], [97.97, 26.53], [98.5, 26.75], [99.03, 26.53], [99.25, 26.0], [99.15, 25.75], [99.25, 25.5], [99.15, 25.25], [99.25, 25.0], [99.03, 24.47], [98.5, 24.25], [98.25, 24.35], [98.18, 24.32], [98.03, 23.97], [97.5, 23.75], [96.97, 23.97], [96.75, 24.5], [96.97, 25.03], [97.32, 25.18], [97.35, 25.25], [97.25, 25.5]]], [[[96.75, 30.5], [96.97, 31.03], [97.5, 31.25], [97.75, 31.15], [98.0, 31.25], [98.53, 31.03], [98.75, 30.5], [98.65, 30.25], [98.75, 30.0], [98.53, 29.47], [98.0, 29.25], [97.47, 29.47], [97.32, 29.82], [96.97, 29.97], [96.75, 30.5]]]]}, "2022-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[94.75, 28.5], [94.97, 29.03], [95.5, 29.25], [95.75, 29.15], [96.0, 29.25], [96.53, 29.03], [96.68, 28.68], [96.75, 28.65], [97.0, 28.75], [97.25, 28.65], [97.5, 28.75], [98.03, 28.53], [98.25, 28.0], [98.15, 27.75], [98.18, 27.68], [98.5, 27.54], [98.88, 27.7], [98.75, 28.0], [98.97, 28.53], [99.5, 28.75], [100.03, 28.53], [100.25, 28.0], [100.13, 27.7], [100.53, 27.53], [100.75, 27.0], [100.65, 26.75], [100.75, 26.5], [100.65, 26.25], [100.75, 26.0], [100.53, 25.47], [100.0, 25.25], [99.75, 25.35], [99.5, 25.25], [99.2, 25.38], [99.15, 25.25], [99.25, 25.0], [99.03, 24.47], [98.5, 24.25], [98.25, 24.35], [98.18, 24.32], [98.03, 23.97], [97.5, 23.75], [96.97, 23.97], [96.75, 24.5], [96.96, 25.0], [96.75, 25.5], [96.97, 26.03], [97.32, 26.18], [97.35, 26.25], [97.32, 26.32], [96.97, 26.47], [96.82, 26.82], [96.75, 26.85], [96.5, 26.75], [96.25, 26.85], [96.18, 26.82], [96.03, 26.47], [95.5, 26.25], [95.25, 26.35], [95.0, 26.25], [94.47, 26.47], [94.25, 27.0], [94.47, 27.53], [94.82, 27.68], [94.96, 28.0], [94.75, 28.5]]], [[[95.97, 30.97], [95.75, 31.5], [95.97, 32.03], [96.5, 32.25], [96.75, 32.15], [97.0, 32.25], [97.25, 32.15], [97.5, 32.25], [98.03, 32.03], [98.25, 31.5], [98.15, 31.25], [98.18, 31.18], [98.53, 31.03], [98.75, 30.5], [98.65, 30.25], [98.75, 30.0], [98.53, 29.47], [98.0, 29.25], [97.47, 29.47], [97.32, 29.82], [96.97, 29.97], [96.75, 30.5], [96.85, 30.75], [96.82, 30.82], [96.75, 30.85], [96.5, 30.75], [95.97, 30.97]]]]}, "2022-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[94.96, 28.0], [94.75, 28.5], [94.97, 29.03], [95.5, 29.25], [95.75, 29.15], [96.0, 29.25], [96.53, 29.03], [96.68, 28.68], [96.75, 28.65], [97.0, 28.75], [97.25, 28.65], [97.38, 28.7], [97.25, 29.0], [97.46, 29.5], [97.32, 29.82], [96.97, 29.97], [96.75, 30.5], [96.85, 30.75], [96.82, 30.82], [96.75, 30.85], [96.5, 30.75], [95.97, 30.97], [95.75, 31.5], [95.97, 32.03], [96.5, 32.25], [96.75, 32.15], [97.0, 32.25], [97.25, 32.15], [97.5, 32.25], [98.03, 32.03], [98.25, 31.5], [98.15, 31.25], [98.18, 31.18], [98.53, 31.03], [98.75, 30.5], [98.65, 30.25], [98.68, 30.18], [99.03, 30.03], [99.18, 29.68], [99.25, 29.65], [99.32, 29.68], [99.47, 30.03], [100.0, 30.25], [100.53, 30.03], [100.68, 29.68], [101.03, 29.53], [101.25, 29.0], [101.03, 28.47], [100.68, 28.32], [100.53, 27.97], [100.18, 27.82], [100.13, 27.7], [100.53, 27.53], [100.75, 27.0], [100.65, 26.75], [100.75, 26.5], [100.65, 26.25], [100.75, 26.0], [100.53, 25.47], [100.0, 25.25], [99.75, 25.35], [99.5, 25.25], [99.2, 25.38], [99.15, 25.25], [99.25, 25.0], [99.03, 24.47], [98.5, 24.25], [98.25, 24.35], [98.18, 24.32], [98.03, 23.97], [97.5, 23.75], [96.97, 23.97], [96.75, 24.5], [96.96, 25.0], [96.75, 25.5], [96.97, 26.03], [97.32, 26.18], [97.35, 26.25], [97.32, 26.32], [96.97, 26.47], [96.82, 26.82], [96.75, 26.85], [96.5, 26.75], [96.25, 26.85], [96.18, 26.82], [96.03, 26.47], [95.5, 26.25], [95.25, 26.35], [95.0, 26.25], [94.47, 26.47], [94.25, 27.0], [94.47, 27.53], [94.82, 27.68], [94.96, 28.0]], [[98.88, 27.7], [98.82, 27.82], [98.47, 27.97], [98.32, 28.32], [98.25, 28.35], [98.13, 28.3], [98.25, 28.0], [98.15, 27.75], [98.18, 27.68], [98.5, 27.54], [98.88, 27.7]]]]}, "2022-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[94.96, 28.0], [94.75, 28.5], [94.97, 29.03], [95.5, 29.25], [95.75, 29.15], [96.0, 29.25], [96.53, 29.03], [96.68, 28.68], [96.75, 28.65], [97.0, 28.75], [97.25, 28.65], [97.38, 28.7], [97.25, 29.0], [97.38, 29.3], [96.97, 29.47], [96.75, 30.0], [96.85, 30.25], [96.75, 30.5], [96.85, 30.75], [96.82, 30.82], [96.75, 30.85], [96.5, 30.75], [95.97, 30.97], [95.75, 31.5], [95.97, 32.03], [96.5, 32.25], [96.75, 32.15], [97.0, 32.25], [97.25, 32.15], [97.5, 32.25], [98.03, 32.03], [98.25, 31.5], [98.15, 31.25], [98.18, 31.18], [98.53, 31.03], [98.68, 30.68], [98.8, 30.63], [98.97, 31.03], [99.5, 31.25], [99.75, 31.15], [99.82, 31.18], [99.97, 31.53], [100.5, 31.75], [100.75, 31.65], [101.0, 31.75], [101.53, 31.53], [101.75, 31.0], [101.65, 30.75], [101.75, 30.5], [101.63, 30.2], [102.03, 30.03], [102.25, 29.5], [102.03, 28.97], [101.5, 28.75], [101.25, 28.85], [101.18, 28.82], [101.03, 28.47], [100.68, 28.32], [100.54, 28.0], [100.68, 27.68], [101.03, 27.53], [101.25, 27.0], [101.03, 26.47], [100.68, 26.32], [100.65, 26.25], [100.75, 26.0], [100.53, 25.47], [100.0, 25.25], [99.75, 25.35], [99.5, 25.25], [98.97, 25.47], [98.82, 25.82], [98.75, 25.85], [98.68, 25.82], [98.65, 25.75], [98.75, 25.5], [98.53, 24.97], [98.13, 24.8], [98.25, 24.5], [98.03, 23.97], [97.5, 23.75], [96.97, 23.97], [96.75, 24.5], [96.96, 25.0], [96.75, 25.5], [96.97, 26.03], [97.32, 26.18], [97.35, 26.25], [97.32, 26.32], [96.97, 26.47], [96.82, 26.82], [96.75, 26.85], [96.5, 26.75], [96.25, 26.85], [96.18, 26.82], [96.03, 26.47], [95.5, 26.25], [95.25, 26.35], [95.0, 26.25], [94.47, 26.47], [94.25, 27.0], [94.47, 27.53], [94.82, 27.68], [94.96, 28.0]], [[98.88, 27.7], [98.82, 27.82], [98.47, 27.97], [98.32, 28.32], [98.25, 28.35], [98.13, 28.3], [98.25, 28.0], [98.15, 27.75], [98.18, 27.68], [98.5, 27.54], [98.88, 27.7]]]]}, "2022-07-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[96.75, 30.5], [96.85, 30.75], [96.75, 31.0], [96.85, 31.25], [96.75, 31.5], [96.97, 32.03], [97.5, 32.25], [98.03, 32.03], [98.25, 31.5], [98.15, 31.25], [98.18, 31.18], [98.53, 31.03], [98.68, 30.68], [98.8, 30.63], [98.97, 31.03], [99.5, 31.25], [99.75, 31.15], [99.82, 31.18], [99.97, 31.53], [100.5, 31.75], [100.75, 31.65], [101.0, 31.75], [101.53, 31.53], [101.75, 31.0], [101.65, 30.75], [101.75, 30.5], [101.63, 30.2], [102.03, 30.03], [102.25, 29.5], [102.03, 28.97], [101.5, 28.75], [101.25, 28.85], [101.18, 28.82], [101.03, 28.47], [100.68, 28.32], [100.54, 28.0], [100.68, 27.68], [101.03, 27.53], [101.25, 27.0], [101.03, 26.47], [100.68, 26.32], [100.65, 26.25], [100.75, 26.0], [100.53, 25.47], [100.0, 25.25], [99.75, 25.35], [99.5, 25.25], [98.97, 25.47], [98.82, 25.82], [98.47, 25.97], [98.25, 26.5], [98.35, 26.75], [98.25, 27.0], [98.47, 27.53], [98.88, 27.7], [98.82, 27.82], [98.47, 27.97], [98.32, 28.32], [98.25, 28.35], [98.0, 28.25], [97.47, 28.47], [97.25, 29.0], [97.38, 29.3], [96.97, 29.47], [96.75, 30.0], [96.85, 30.25], [96.75, 30.5]]]]}, "2022-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[100.68, 27.68], [101.03, 27.53], [101.25, 27.0], [101.03, 26.47], [100.68, 26.32], [100.65, 26.25], [100.75, 26.0], [100.53, 25.47], [100.0, 25.25], [99.47, 25.47], [99.32, 25.82], [98.97, 25.97], [98.75, 26.5], [98.97, 27.03], [99.32, 27.18], [99.35, 27.25], [99.25, 27.5], [99.47, 28.03], [100.0, 28.25], [100.53, 28.03], [100.68, 27.68]]], [[[96.85, 30.75], [96.75, 31.0], [96.97, 31.53], [97.5, 31.75], [98.03, 31.53], [98.25, 31.0], [98.15, 30.75], [98.18, 30.68], [98.25, 30.65], [98.5, 30.75], [98.8, 30.63], [98.97, 31.03], [99.5, 31.25], [99.75, 31.15], [99.82, 31.18], [99.97, 31.53], [100.5, 31.75], [100.75, 31.65], [101.0, 31.75], [101.53, 31.53], [101.75, 31.0], [101.65, 30.75], [101.75, 30.5], [101.63, 30.2], [102.03, 30.03], [102.25, 29.5], [102.03, 28.97], [101.5, 28.75], [101.25, 28.85], [101.0, 28.75], [100.75, 28.85], [100.68, 28.82], [100.53, 28.47], [100.0, 28.25], [99.75, 28.35], [99.5, 28.25], [98.97, 28.47], [98.82, 28.82], [98.75, 28.85], [98.5, 28.75], [97.97, 28.97], [97.82, 29.32], [97.75, 29.35], [97.5, 29.25], [96.97, 29.47], [96.75, 30.0], [96.85, 30.25], [96.75, 30.5], [96.85, 30.75]]]]}, "2022-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.97, 30.53], [99.5, 30.75], [100.03, 30.53], [100.25, 30.0], [100.03, 29.47], [99.5, 29.25], [98.97, 29.47], [98.75, 30.0], [98.97, 30.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.9467329208249}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.5641924347497467}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.74551397627505, 15.391578426158105, 16.72691273833999, 15.375627744256747, 12.16220591721543, 8.57996100104674, 9.401147390595042, 6.683248167319505]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.74551397627505, 6.987987595683762, 6.624349680133662, 7.018336265314531, 1.7464836870121871, 1.1285941052126987, 3.497711881563589, 6.683248167319505]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9778077448719387, -1.7003894598439868, -1.890292660736145, -1.7058632426640568, -3.1358550786266783, -3.6275025188074568, -2.5236904097164743, -2.013046999233609]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9778077448719387, -2.8000157638221026, -3.281938117256516, -2.6951010395142703, -7.7081607030821715, -7.9467329208249, -5.5671821466522715, -2.013046999233609]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2783438385256818, -1.6201889737028958, -1.7962721305823357, -1.6031748468469005, -2.491874066999346, -2.6847612486049677, -1.7142009137093597, -1.3562328778277342]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2783438385256818, -1.8326071320477662, -2.1988498261547393, -2.062229285136704, -5.130333209904672, -5.299962004224568, -3.6020060665089133, -1.3562328778277342]}}