{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:18:50.441054", "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-Mar-01_to_2022-Mar-04_250.5_33.5"}, "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": 2022030001303}, "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": "March 01 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 04 2022"}, "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": 79932.90134438736}, "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": ["United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "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": 33.5}, "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": 250.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "250.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 249.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 252.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-109.47, 30.97], [-110.0, 30.75], [-110.25, 30.85], [-110.5, 30.75], [-110.75, 30.85], [-111.0, 30.75], [-111.53, 30.97], [-111.75, 31.5], [-111.54, 32.0], [-111.75, 32.5], [-111.65, 32.75], [-111.75, 33.0], [-111.53, 33.53], [-111.18, 33.68], [-111.03, 34.03], [-110.5, 34.25], [-110.0, 34.04], [-109.68, 34.18], [-109.65, 34.25], [-109.75, 34.5], [-109.53, 35.03], [-109.12, 35.2], [-109.18, 35.32], [-109.53, 35.47], [-109.75, 36.0], [-109.53, 36.53], [-109.0, 36.75], [-108.47, 36.53], [-108.32, 36.18], [-108.25, 36.15], [-108.0, 36.25], [-107.75, 36.15], [-107.5, 36.25], [-106.97, 36.03], [-106.75, 35.5], [-106.97, 34.97], [-107.32, 34.82], [-107.35, 34.75], [-107.32, 34.68], [-106.97, 34.53], [-106.75, 34.0], [-106.97, 33.47], [-107.32, 33.32], [-107.35, 33.25], [-107.25, 33.0], [-107.47, 32.47], [-108.0, 32.25], [-108.25, 32.35], [-108.37, 32.3], [-108.25, 32.0], [-108.47, 31.47], [-109.0, 31.25], [-109.3, 31.38], [-109.47, 30.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.North-America", "N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.53, 30.97], [-111.75, 31.5], [-111.53, 32.03], [-111.0, 32.25], [-110.75, 32.15], [-110.5, 32.25], [-110.25, 32.15], [-110.0, 32.25], [-109.47, 32.03], [-109.25, 31.5], [-109.47, 30.97], [-110.0, 30.75], [-110.25, 30.85], [-110.5, 30.75], [-110.75, 30.85], [-111.0, 30.75], [-111.53, 30.97]]], [[[-109.0, 34.75], [-108.47, 34.53], [-108.25, 34.0], [-108.47, 33.47], [-108.82, 33.32], [-108.97, 32.97], [-109.5, 32.75], [-110.03, 32.97], [-110.25, 33.5], [-110.03, 34.03], [-109.68, 34.18], [-109.53, 34.53], [-109.0, 34.75]]]]}, "2022-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.75, 33.0], [-111.53, 33.53], [-111.18, 33.68], [-111.03, 34.03], [-110.5, 34.25], [-110.0, 34.04], [-109.68, 34.18], [-109.65, 34.25], [-109.75, 34.5], [-109.53, 35.03], [-109.12, 35.2], [-109.18, 35.32], [-109.53, 35.47], [-109.75, 36.0], [-109.53, 36.53], [-109.0, 36.75], [-108.47, 36.53], [-108.32, 36.18], [-108.25, 36.15], [-108.0, 36.25], [-107.75, 36.15], [-107.5, 36.25], [-106.97, 36.03], [-106.75, 35.5], [-106.97, 34.97], [-107.32, 34.82], [-107.35, 34.75], [-107.32, 34.68], [-106.97, 34.53], [-106.75, 34.0], [-106.97, 33.47], [-107.32, 33.32], [-107.35, 33.25], [-107.25, 33.0], [-107.47, 32.47], [-108.0, 32.25], [-108.25, 32.35], [-108.37, 32.3], [-108.25, 32.0], [-108.47, 31.47], [-109.0, 31.25], [-109.30000000000001, 31.38], [-109.47, 30.97], [-110.0, 30.75], [-110.25, 30.85], [-110.5, 30.75], [-110.75, 30.85], [-111.0, 30.75], [-111.53, 30.97], [-111.75, 31.5], [-111.53999999999999, 32.0], [-111.75, 32.5], [-111.65, 32.75], [-111.75, 33.0]]]]}, "2022-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.75, 33.0], [-111.53, 33.53], [-111.18, 33.68], [-111.03, 34.03], [-110.5, 34.25], [-110.0, 34.04], [-109.68, 34.18], [-109.65, 34.25], [-109.75, 34.5], [-109.53, 35.03], [-109.12, 35.2], [-109.18, 35.32], [-109.53, 35.47], [-109.75, 36.0], [-109.53, 36.53], [-109.0, 36.75], [-108.47, 36.53], [-108.32, 36.18], [-108.25, 36.15], [-108.0, 36.25], [-107.75, 36.15], [-107.5, 36.25], [-106.97, 36.03], [-106.75, 35.5], [-106.97, 34.97], [-107.32, 34.82], [-107.35, 34.75], [-107.32, 34.68], [-106.97, 34.53], [-106.75, 34.0], [-106.97, 33.47], [-107.32, 33.32], [-107.35, 33.25], [-107.25, 33.0], [-107.47, 32.47], [-108.0, 32.25], [-108.25, 32.35], [-108.37, 32.3], [-108.25, 32.0], [-108.47, 31.47], [-109.0, 31.25], [-109.30000000000001, 31.38], [-109.47, 30.97], [-110.0, 30.75], [-110.25, 30.85], [-110.5, 30.75], [-110.75, 30.85], [-111.0, 30.75], [-111.53, 30.97], [-111.75, 31.5], [-111.53999999999999, 32.0], [-111.75, 32.5], [-111.65, 32.75], [-111.75, 33.0]]]]}, "2022-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.75, 33.0], [-111.53, 33.53], [-111.18, 33.68], [-111.03, 34.03], [-110.5, 34.25], 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amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.779152986820138}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.043059456589106, 12.040250573409367, 12.953014729553672, 12.536442933803357]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.100458897511942, 18.145432345968004, 19.656483613279875, 19.43103569533349]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.998944260853738, 5.526643888960043, 6.112143905103067, 5.829371100988861]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.59961717135468, 6.525482178277741, 7.743086560591962, 7.002496397434982]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4371748527474426, 1.5348828478958212, 1.735083641768954, 1.6547552797431007]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6440294043320076, 1.9278500991351388, 2.1390439442186793, 2.0078008475945697]}}