{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:34.028968", "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-Jul-09_to_2025-Jul-12_90.0_32.0"}, "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": 2025070001880}, "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": "July 09 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 12 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 65731.08458569537}, "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"]}, "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": 32.0}, "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": 90.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "90.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 89.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 93.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[88.85, 31.75], [88.75, 32.0], [88.97, 32.53], [89.32, 32.68], [89.47, 33.03], [90.0, 33.25], [90.5, 33.04], [91.0, 33.25], [91.25, 33.15], [91.5, 33.25], [92.03, 33.03], [92.18, 32.68], [92.25, 32.65], [92.32, 32.68], [92.47, 33.03], [93.0, 33.25], [93.53, 33.03], [93.68, 32.68], [94.03, 32.53], [94.25, 32.0], [94.03, 31.47], [93.5, 31.25], [93.25, 31.35], [93.18, 31.32], [93.03, 30.97], [92.5, 30.75], [92.25, 30.85], [92.0, 30.75], [91.75, 30.85], [91.68, 30.82], [91.53, 30.47], [91.0, 30.25], [90.75, 30.35], [90.5, 30.25], [90.25, 30.35], [90.0, 30.25], [89.7, 30.38], [89.53, 29.97], [89.0, 29.75], [88.47, 29.97], [88.25, 30.5], [88.35, 30.75], [88.25, 31.0], [88.47, 31.53], [88.82, 31.68], [88.85, 31.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.97, 32.53], [89.32, 32.68], [89.47, 33.03], [90.0, 33.25], [90.53, 33.03], [90.68, 32.68], [90.75, 32.65], [91.0, 32.75], [91.53, 32.53], [91.68, 32.18], [92.03, 32.03], [92.25, 31.5], [92.03, 30.97], [91.5, 30.75], [91.25, 30.85], [91.18, 30.82], [91.03, 30.47], [90.5, 30.25], [90.25, 30.35], [90.0, 30.25], [89.47, 30.47], [89.32, 30.82], [88.97, 30.97], [88.75, 31.5], [88.85, 31.75], [88.75, 32.0], [88.97, 32.53]]], [[[93.0, 31.75], [92.47, 31.97], [92.25, 32.5], [92.47, 33.03], [93.0, 33.25], [93.53, 33.03], [93.75, 32.5], [93.53, 31.97], [93.0, 31.75]]]]}, "2025-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.25, 31.0], [88.47, 31.53], [88.82, 31.68], [88.85, 31.75], [88.75, 32.0], [88.97, 32.53], [89.32, 32.68], [89.47, 33.03], [90.0, 33.25], [90.5, 33.04], [91.0, 33.25], [91.25, 33.15], [91.5, 33.25], [92.03, 33.03], [92.18, 32.68], [92.25, 32.65], [92.32, 32.68], [92.47, 33.03], [93.0, 33.25], [93.53, 33.03], [93.68, 32.68], [94.03, 32.53], [94.25, 32.0], [94.03, 31.47], [93.5, 31.25], [93.25, 31.35], [93.18, 31.32], [93.03, 30.97], [92.5, 30.75], [92.25, 30.85], [92.0, 30.75], [91.75, 30.85], [91.68, 30.82], [91.53, 30.47], [91.0, 30.25], [90.75, 30.35], [90.5, 30.25], [90.25, 30.35], [90.0, 30.25], [89.7, 30.38], [89.53, 29.97], [89.0, 29.75], [88.47, 29.97], [88.25, 30.5], [88.35, 30.75], [88.25, 31.0]]]]}, "2025-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.25, 31.0], [88.47, 31.53], [88.82, 31.68], [88.85, 31.75], [88.75, 32.0], [88.97, 32.53], [89.32, 32.68], [89.47, 33.03], [90.0, 33.25], [90.5, 33.04], [91.0, 33.25], [91.25, 33.15], [91.5, 33.25], [92.03, 33.03], [92.18, 32.68], [92.25, 32.65], [92.32, 32.68], [92.47, 33.03], [93.0, 33.25], [93.53, 33.03], [93.68, 32.68], [94.03, 32.53], [94.25, 32.0], [94.03, 31.47], [93.5, 31.25], [93.25, 31.35], [93.18, 31.32], [93.03, 30.97], [92.5, 30.75], [92.25, 30.85], [92.0, 30.75], [91.75, 30.85], [91.68, 30.82], [91.53, 30.47], [91.0, 30.25], [90.75, 30.35], [90.5, 30.25], [90.25, 30.35], [90.0, 30.25], [89.7, 30.38], [89.53, 29.97], [89.0, 29.75], [88.47, 29.97], [88.25, 30.5], [88.35, 30.75], [88.25, 31.0]]]]}, "2025-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[88.25, 31.0], [88.47, 31.53], [88.82, 31.68], [88.85, 31.75], [88.75, 32.0], [88.97, 32.53], [89.32, 32.68], [89.47, 33.03], [90.0, 33.25], [90.5, 33.04], [91.0, 33.25], [91.25, 33.15], [91.5, 33.25], [92.03, 33.03], [92.18, 32.68], [92.25, 32.65], [92.5, 32.75], [92.75, 32.65], [93.0, 32.75], [93.25, 32.65], [93.5, 32.75], [94.03, 32.53], [94.25, 32.0], [94.03, 31.47], [93.5, 31.25], [93.25, 31.35], [93.18, 31.32], [93.03, 30.97], [92.5, 30.75], [92.25, 30.85], [92.0, 30.75], [91.75, 30.85], [91.68, 30.82], [91.53, 30.47], [91.0, 30.25], [90.75, 30.35], [90.5, 30.25], [90.25, 30.35], [90.0, 30.25], [89.7, 30.38], [89.53, 29.97], [89.0, 29.75], [88.47, 29.97], [88.25, 30.5], [88.35, 30.75], [88.25, 31.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.374352558656483}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.752842926137333}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.388761627979761, 10.967776845296214, 11.399205271402934, 11.61408471001522]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.299356079101585, 13.318011220296228, 13.223147328694665, 15.063005065917991]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.3954157791844093, 2.4819698413839, 2.9439724890159256, 3.0295154660231254]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.5871973065789575, 2.9661065399592417, 3.976619036547504, 4.374352558656483]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6102957158475368, 1.5901758926522738, 1.8310401456809078, 1.8793437970960485]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2528891109597975, 1.7986493143114877, 2.557436498464791, 2.6141334868561663]}}