{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:23:12.200559", "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": "2021-Mar-22_to_2021-Mar-29_101.5_37.5"}, "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": 2021030002479}, "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 22 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 29 2021"}, "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": "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": 87280.34198182891}, "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": 37.5}, "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": 95.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 102.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[102.5, 38.25], [103.03, 38.03], [103.25, 37.5], [103.03, 36.97], [102.677, 36.823], [102.53, 36.47], [102.0, 36.25], [101.75, 36.354], [101.5, 36.25], [101.0, 36.457], [100.5, 36.25], [100.25, 36.354], [100.0, 36.25], [99.47, 36.47], [99.25, 37.0], [99.354, 37.249], [99.354, 37.25], [99.323, 37.323], [99.25, 37.354], [99.0, 37.25], [98.75, 37.354], [98.5, 37.25], [98.25, 37.354], [98.0, 37.25], [97.75, 37.354], [97.5, 37.25], [96.97, 37.47], [96.75, 38.0], [96.875, 38.302], [96.47, 38.47], [96.323, 38.823], [96.25, 38.854], [96.177, 38.823], [96.03, 38.47], [95.5, 38.25], [94.97, 38.47], [94.75, 39.0], [94.854, 39.25], [94.75, 39.5], [94.97, 40.03], [95.5, 40.25], [95.75, 40.146], [96.0, 40.25], [96.25, 40.146], [96.5, 40.25], [96.75, 40.146], [97.0, 40.25], [97.25, 40.146], [97.5, 40.25], [97.75, 40.146], [98.0, 40.25], [98.53, 40.03], [98.677, 39.677], [98.726, 39.656], [98.75, 39.646], [99.0, 39.75], [99.25, 39.646], [99.5, 39.75], [100.03, 39.53], [100.177, 39.177], [100.53, 39.03], [100.677, 38.677], [100.75, 38.646], [101.0, 38.75], [101.25, 38.646], [101.5, 38.75], [102.03, 38.53], [102.198, 38.125], [102.5, 38.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia", "Tibetan-Plateau", "E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-03-22T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[94.85355339059328, 39.25], [94.75, 39.5], [94.96966991411009, 40.03033008588991], [95.5, 40.25], [95.75, 40.14644660940672], [96.0, 40.25], [96.25, 40.14644660940672], [96.5, 40.25], [96.75, 40.14644660940672], [97.0, 40.25], [97.25, 40.14644660940672], [97.5, 40.25], [97.75, 40.14644660940672], [98.0, 40.25], [98.53033008588991, 40.03033008588991], [98.67677669529664, 39.67677669529664], [98.75, 39.64644660940672], [99.0, 39.75], [99.25, 39.64644660940672], [99.5, 39.75], [100.03033008588991, 39.53033008588991], [100.17677669529664, 39.17677669529664], [100.53033008588991, 39.03033008588991], [100.67677669529664, 38.67677669529664], [100.75, 38.64644660940672], [101.0, 38.75], [101.25, 38.64644660940672], [101.5, 38.75], [102.03033008588991, 38.53033008588991], [102.25, 38.0], [102.14644660940672, 37.75], [102.25, 37.5], [102.03033008588991, 36.96966991411009], [101.5, 36.75], [101.25, 36.85355339059328], [101.0, 36.75], [100.46966991411009, 36.96966991411009], [100.32322330470336, 37.32322330470336], [100.25, 37.35355339059328], [100.0, 37.25], [99.46966991411009, 37.46966991411009], [99.32322330470336, 37.82322330470336], [99.25, 37.85355339059328], [99.0, 37.75], [98.46966991411009, 37.96966991411009], [98.32322330470336, 38.32322330470336], [98.25, 38.35355339059328], [98.0, 38.25], [97.75, 38.35355339059328], [97.5, 38.25], [97.25, 38.35355339059328], [97.0, 38.25], [96.46966991411009, 38.46966991411009], [96.32322330470336, 38.82322330470336], [96.25, 38.85355339059328], [96.17677669529664, 38.82322330470336], [96.03033008588991, 38.46966991411009], [95.5, 38.25], [94.96966991411009, 38.46966991411009], [94.75, 39.0], [94.85355339059328, 39.25]]]}, "2021-03-23T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[94.85355339059328, 39.25], [94.75, 39.5], [94.96966991411009, 40.03033008588991], [95.5, 40.25], [95.75, 40.14644660940672], [96.0, 40.25], [96.25, 40.14644660940672], [96.5, 40.25], [96.75, 40.14644660940672], [97.0, 40.25], [97.25, 40.14644660940672], [97.5, 40.25], [97.75, 40.14644660940672], [98.0, 40.25], [98.53033008588991, 40.03033008588991], [98.67677669529664, 39.67677669529664], [98.75, 39.64644660940672], [99.0, 39.75], [99.25, 39.64644660940672], [99.5, 39.75], [100.03033008588991, 39.53033008588991], [100.17677669529664, 39.17677669529664], [100.53033008588991, 39.03033008588991], [100.67677669529664, 38.67677669529664], [100.75, 38.64644660940672], [101.0, 38.75], [101.25, 38.64644660940672], [101.5, 38.75], [102.03033008588991, 38.53033008588991], [102.19822330470336, 38.125], [102.5, 38.25], [103.03033008588991, 38.03033008588991], [103.25, 37.5], [103.03033008588991, 36.96966991411009], [102.67677669529664, 36.82322330470336], [102.53033008588991, 36.46966991411009], [102.0, 36.25], [101.75, 36.35355339059328], [101.5, 36.25], [100.96966991411009, 36.46966991411009], [100.82322330470336, 36.82322330470336], [100.75, 36.85355339059328], [100.5, 36.75], [100.25, 36.85355339059328], [100.0, 36.75], [99.46966991411009, 36.96966991411009], [99.32322330470336, 37.32322330470336], [99.25, 37.35355339059328], [99.0, 37.25], [98.75, 37.35355339059328], [98.5, 37.25], [98.25, 37.35355339059328], [98.0, 37.25], [97.75, 37.35355339059328], [97.5, 37.25], [96.96966991411009, 37.46966991411009], [96.75, 38.0], [96.875, 38.30177669529664], [96.46966991411009, 38.46966991411009], [96.32322330470336, 38.82322330470336], [96.25, 38.85355339059328], [96.17677669529664, 38.82322330470336], [96.03033008588991, 38.46966991411009], [95.5, 38.25], [94.96966991411009, 38.46966991411009], [94.75, 39.0], [94.85355339059328, 39.25]]]}, "2021-03-24T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[94.85355339059328, 39.25], [94.75, 39.5], [94.96966991411009, 40.03033008588991], [95.5, 40.25], [95.75, 40.14644660940672], [96.0, 40.25], [96.25, 40.14644660940672], [96.5, 40.25], [96.75, 40.14644660940672], [97.0, 40.25], [97.25, 40.14644660940672], [97.5, 40.25], [97.75, 40.14644660940672], [98.0, 40.25], [98.53033008588991, 40.03033008588991], [98.67677669529664, 39.67677669529664], [98.75, 39.64644660940672], [99.0, 39.75], [99.25, 39.64644660940672], [99.5, 39.75], [100.03033008588991, 39.53033008588991], [100.17677669529664, 39.17677669529664], [100.53033008588991, 39.03033008588991], [100.67677669529664, 38.67677669529664], [100.75, 38.64644660940672], [101.0, 38.75], [101.25, 38.64644660940672], [101.5, 38.75], [102.03033008588991, 38.53033008588991], [102.19822330470336, 38.125], [102.5, 38.25], [103.03033008588991, 38.03033008588991], [103.25, 37.5], [103.03033008588991, 36.96966991411009], [102.67677669529664, 36.82322330470336], [102.53033008588991, 36.46966991411009], [102.0, 36.25], [101.75, 36.35355339059328], [101.5, 36.25], [100.96966991411009, 36.46966991411009], [100.82322330470336, 36.82322330470336], [100.75, 36.85355339059328], [100.5, 36.75], [100.25, 36.85355339059328], [100.0, 36.75], [99.46966991411009, 36.96966991411009], [99.32322330470336, 37.32322330470336], [99.25, 37.35355339059328], [99.0, 37.25], [98.75, 37.35355339059328], [98.5, 37.25], [98.25, 37.35355339059328], [98.0, 37.25], [97.75, 37.35355339059328], [97.5, 37.25], [96.96966991411009, 37.46966991411009], [96.75, 38.0], [96.875, 38.30177669529664], [96.46966991411009, 38.46966991411009], [96.32322330470336, 38.82322330470336], [96.25, 38.85355339059328], [96.17677669529664, 38.82322330470336], [96.03033008588991, 38.46966991411009], [95.5, 38.25], [94.96966991411009, 38.46966991411009], [94.75, 39.0], [94.85355339059328, 39.25]]]}, "2021-03-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[97.32322330470336, 38.67677669529664], [97.46966991411009, 39.03033008588991], [98.0, 39.25], [98.25, 39.14644660940672], [98.5, 39.25], [98.75, 39.14644660940672], [99.0, 39.25], [99.53033008588991, 39.03033008588991], [99.67677669529664, 38.67677669529664], [99.75, 38.64644660940672], [100.0, 38.75], [100.53033008588991, 38.53033008588991], [100.67677669529664, 38.17677669529664], [100.75, 38.14644660940672], [101.0, 38.25], [101.25, 38.14644660940672], [101.5, 38.25], [102.0, 38.042893218813454], [102.5, 38.25], [103.03033008588991, 38.03033008588991], [103.25, 37.5], [103.03033008588991, 36.96966991411009], [102.67677669529664, 36.82322330470336], [102.53033008588991, 36.46966991411009], [102.0, 36.25], [101.75, 36.35355339059328], [101.5, 36.25], [100.96966991411009, 36.46966991411009], [100.82322330470336, 36.82322330470336], [100.75, 36.85355339059328], [100.5, 36.75], [100.25, 36.85355339059328], [100.0, 36.75], [99.46966991411009, 36.96966991411009], [99.32322330470336, 37.32322330470336], [99.25, 37.35355339059328], [99.0, 37.25], [98.75, 37.35355339059328], [98.5, 37.25], [98.25, 37.35355339059328], [98.0, 37.25], [97.75, 37.35355339059328], [97.5, 37.25], [96.96966991411009, 37.46966991411009], [96.75, 38.0], [96.96966991411009, 38.53033008588991], [97.32322330470336, 38.67677669529664]]]}, "2021-03-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[98.30177669529664, 38.375], [98.0, 38.25], [97.46966991411009, 38.46966991411009], [97.25, 39.0], [97.46966991411009, 39.53033008588991], [98.0, 39.75], [98.53033008588991, 39.53033008588991], [98.69822330470336, 39.125], [99.0, 39.25], [99.53033008588991, 39.03033008588991], [99.67677669529664, 38.67677669529664], [99.75, 38.64644660940672], [100.0, 38.75], [100.53033008588991, 38.53033008588991], [100.69822330470336, 38.125], [101.0, 38.25], [101.25, 38.14644660940672], [101.5, 38.25], [102.03033008588991, 38.03033008588991], [102.25, 37.5], [102.03033008588991, 36.96966991411009], [101.5, 36.75], [101.25, 36.85355339059328], [101.0, 36.75], [100.5, 36.957106781186546], [100.0, 36.75], [99.46966991411009, 36.96966991411009], [99.32322330470336, 37.32322330470336], [99.25, 37.35355339059328], [99.0, 37.25], [98.46966991411009, 37.46966991411009], [98.25, 38.0], [98.35355339059328, 38.25], [98.30177669529664, 38.375]]]}, "2021-03-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[97.35355339059328, 38.75], [97.25, 39.0], [97.46966991411009, 39.53033008588991], [98.0, 39.75], [98.25, 39.64644660940672], [98.5, 39.75], [99.03033008588991, 39.53033008588991], [99.17677669529664, 39.17677669529664], [99.53033008588991, 39.03033008588991], [99.67677669529664, 38.67677669529664], [99.75, 38.64644660940672], [100.0, 38.75], [100.53033008588991, 38.53033008588991], [100.67677669529664, 38.17677669529664], [100.75, 38.14644660940672], [101.0, 38.25], [101.25, 38.14644660940672], [101.5, 38.25], [102.03033008588991, 38.03033008588991], [102.25, 37.5], [102.14644660940672, 37.25], [102.25, 37.0], [102.03033008588991, 36.46966991411009], [101.5, 36.25], [101.0, 36.457106781186546], [100.5, 36.25], [100.25, 36.35355339059328], [100.0, 36.25], [99.46966991411009, 36.46966991411009], [99.25, 37.0], [99.35355339059328, 37.25], [99.32322330470336, 37.32322330470336], [99.25, 37.35355339059328], [99.0, 37.25], [98.46966991411009, 37.46966991411009], [98.30177669529664, 37.875], [98.0, 37.75], [97.46966991411009, 37.96966991411009], [97.25, 38.5], [97.35355339059328, 38.75]]]}, "2021-03-28T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[97.35355339059328, 38.75], [97.25, 39.0], [97.46966991411009, 39.53033008588991], [98.0, 39.75], [98.25, 39.64644660940672], [98.5, 39.75], [99.03033008588991, 39.53033008588991], [99.17677669529664, 39.17677669529664], [99.53033008588991, 39.03033008588991], [99.67677669529664, 38.67677669529664], [99.75, 38.64644660940672], [100.0, 38.75], [100.53033008588991, 38.53033008588991], [100.67677669529664, 38.17677669529664], [100.75, 38.14644660940672], [101.0, 38.25], [101.25, 38.14644660940672], [101.5, 38.25], [102.03033008588991, 38.03033008588991], [102.25, 37.5], [102.14644660940672, 37.25], [102.25, 37.0], [102.03033008588991, 36.46966991411009], [101.5, 36.25], [101.0, 36.457106781186546], [100.5, 36.25], [100.25, 36.35355339059328], [100.0, 36.25], [99.46966991411009, 36.46966991411009], [99.25, 37.0], [99.35355339059328, 37.25], [99.32322330470336, 37.32322330470336], [99.25, 37.35355339059328], [99.0, 37.25], [98.46966991411009, 37.46966991411009], [98.30177669529664, 37.875], [98.0, 37.75], [97.46966991411009, 37.96966991411009], [97.25, 38.5], [97.35355339059328, 38.75]]]}, "2021-03-29T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[97.35355339059328, 38.75], [97.25, 39.0], [97.46966991411009, 39.53033008588991], [98.0, 39.75], [98.25, 39.64644660940672], [98.5, 39.75], [99.03033008588991, 39.53033008588991], [99.17677669529664, 39.17677669529664], [99.53033008588991, 39.03033008588991], [99.67677669529664, 38.67677669529664], [99.75, 38.64644660940672], [100.0, 38.75], [100.53033008588991, 38.53033008588991], [100.67677669529664, 38.17677669529664], [100.75, 38.14644660940672], [101.0, 38.25], [101.25, 38.14644660940672], [101.5, 38.25], [102.03033008588991, 38.03033008588991], [102.25, 37.5], [102.14644660940672, 37.25], [102.25, 37.0], [102.03033008588991, 36.46966991411009], [101.5, 36.25], [101.0, 36.457106781186546], [100.5, 36.25], [100.25, 36.35355339059328], [100.0, 36.25], [99.46966991411009, 36.46966991411009], [99.25, 37.0], [99.35355339059328, 37.25], [99.32322330470336, 37.32322330470336], [99.25, 37.35355339059328], [99.0, 37.25], [98.46966991411009, 37.46966991411009], [98.30177669529664, 37.875], [98.0, 37.75], [97.46966991411009, 37.96966991411009], [97.25, 38.5], [97.35355339059328, 38.75]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.992808118027881}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 6.866874521802513}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-3.94354465117749, -2.856096411150702, -0.6025576784426221, -3.648922725938462, -3.732386948320027, -1.6077054226510654, -2.072522608520046, 0.5734265744820846]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.612349775929829, 3.5978081430455973, 4.5602591439918, 3.1848902266040113, -2.1618216071602205, 3.44840316583867, 2.790263880781822, 7.221468314759534]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.152391075938487, 6.818608837362903, 8.924632939668257, 5.394734099002864, 5.823503969194448, 6.146913424564052, 5.317049872143282, 7.65788127285584]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.894643527488199, 8.287182460025292, 10.992808118027881, 6.229426160800244, 6.356858057445493, 7.872661686814467, 6.434635547247126, 9.652699203026145]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.594954731965383, 1.7831965487239894, 2.4093472889963277, 1.5533721794300932, 1.692227871120638, 1.7773352244321612, 1.5445378513276946, 2.203892664569344]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.877477994463482, 2.3727986504032943, 3.103104640226, 1.9040498085993511, 1.8918049850483936, 2.3381593808425407, 1.947175476306001, 2.849153916469075]}}