{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:59.686966", "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": "2020-Jun-14_to_2020-Jun-19_33.0_-6.5"}, "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": 2020060000470}, "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 14 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 19 2020"}, "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": "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": 162819.94078310305}, "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": ["Tanzania, United Republic of"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": -6.5}, "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": 33.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[33.0, -9.25], [32.75, -9.146], [32.5, -9.25], [31.97, -9.03], [31.823, -8.677], [31.47, -8.53], [31.323, -8.177], [30.97, -8.03], [30.823, -7.677], [30.47, -7.53], [30.25, -7.0], [30.354, -6.75], [30.25, -6.5], [30.47, -5.97], [30.823, -5.823], [30.97, -5.47], [31.323, -5.323], [31.354, -5.25], [31.354, -5.249], [31.25, -5.0], [31.47, -4.47], [32.0, -4.25], [32.249, -4.354], [32.25, -4.354], [32.274, -4.344], [32.323, -4.323], [32.47, -3.97], [33.0, -3.75], [33.25, -3.854], [33.5, -3.75], [33.75, -3.854], [34.0, -3.75], [34.53, -3.97], [34.677, -4.323], [34.75, -4.354], [35.0, -4.25], [35.53, -4.47], [35.677, -4.823], [36.03, -4.97], [36.25, -5.5], [36.146, -5.75], [36.25, -6.0], [36.146, -6.25], [36.25, -6.5], [36.03, -7.03], [35.677, -7.177], [35.53, -7.53], [35.177, -7.677], [35.03, -8.03], [34.5, -8.25], [33.97, -8.03], [33.823, -7.677], [33.75, -7.646], [33.677, -7.677], [33.646, -7.751], [33.75, -8.0], [33.646, -8.249], [33.646, -8.25], [33.75, -8.5], [33.53, -9.03], [33.0, -9.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[31.353553390593273, -6.25], [31.25, -6.0], [31.46966991411009, -5.4696699141100895], [31.82322330470336, -5.3232233047033635], [31.853553390593273, -5.25], [31.75, -5.0], [31.96966991411009, -4.4696699141100895], [32.5, -4.25], [33.03033008588991, -4.4696699141100895], [33.17677669529664, -4.8232233047033635], [33.25, -4.853553390593274], [33.32322330470336, -4.8232233047033635], [33.35355339059328, -4.75], [33.25, -4.5], [33.46966991411009, -3.9696699141100895], [34.0, -3.75], [34.53033008588991, -3.9696699141100895], [34.75, -4.5], [34.64644660940672, -4.75], [34.69822330470336, -4.875000000000001], [35.0, -4.75], [35.25, -4.853553390593274], [35.5, -4.75], [36.03033008588991, -4.9696699141100895], [36.25, -5.5], [36.03033008588991, -6.0303300858899105], [35.5, -6.25], [35.25, -6.146446609406726], [35.125, -6.1982233047033635], [35.25, -6.5], [35.03033008588991, -7.0303300858899105], [34.67677669529664, -7.1767766952966365], [34.53033008588991, -7.5303300858899105], [34.0, -7.75], [33.75, -7.646446609406726], [33.5, -7.75], [33.25, -7.646446609406726], [33.0, -7.75], [32.75, -7.646446609406726], [32.5, -7.75], [31.96966991411009, -7.5303300858899105], [31.82322330470336, -7.1767766952966365], [31.46966991411009, -7.0303300858899105], [31.25, -6.5], [31.353553390593273, -6.25]], [[34.30177669529664, -5.624999999999999], [34.17677669529664, -5.6767766952966365], [34.07322330470336, -5.926776695296639], [34.375, -5.8017766952966365], [34.30177669529664, -5.624999999999999]]]}, "2020-06-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[30.353553390593273, -6.75], [30.25, -6.5], [30.46966991411009, -5.9696699141100895], [30.82322330470336, -5.8232233047033635], [30.96966991411009, -5.4696699141100895], [31.32322330470336, -5.3232233047033635], [31.46966991411009, -4.9696699141100895], [31.82322330470336, -4.8232233047033635], [31.96966991411009, -4.4696699141100895], [32.32322330470336, -4.323223304703363], [32.46966991411009, -3.9696699141100895], [33.0, -3.75], [33.25, -3.8535533905932744], [33.5, -3.75], [33.75, -3.8535533905932744], [34.0, -3.75], [34.53033008588991, -3.9696699141100895], [34.67677669529664, -4.3232233047033635], [34.75, -4.353553390593274], [35.0, -4.25], [35.53033008588991, -4.4696699141100895], [35.67677669529664, -4.8232233047033635], [36.03033008588991, -4.9696699141100895], [36.25, -5.5], [36.14644660940672, -5.75], [36.25, -6.0], [36.14644660940672, -6.25], [36.25, -6.5], [36.03033008588991, -7.0303300858899105], [35.67677669529664, -7.1767766952966365], [35.53033008588991, -7.5303300858899105], [35.17677669529664, -7.6767766952966365], [35.03033008588991, -8.030330085889911], [34.5, -8.25], [33.96966991411009, -8.030330085889911], [33.82322330470336, -7.6767766952966365], [33.75, -7.646446609406726], [33.67677669529664, -7.6767766952966365], [33.64644660940672, -7.75], [33.75, -8.0], [33.64644660940672, -8.25], [33.75, -8.5], [33.53033008588991, -9.030330085889911], [33.0, -9.25], [32.75, -9.146446609406725], [32.5, -9.25], [31.96966991411009, -9.030330085889911], [31.82322330470336, -8.676776695296637], [31.46966991411009, -8.530330085889911], [31.32322330470336, -8.176776695296637], [30.96966991411009, -8.030330085889911], [30.82322330470336, -7.6767766952966365], [30.46966991411009, -7.5303300858899105], [30.25, -7.0], [30.353553390593273, -6.75]]]}, "2020-06-16T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[30.353553390593273, -6.75], [30.25, -6.5], [30.46966991411009, -5.9696699141100895], [30.82322330470336, -5.8232233047033635], [30.96966991411009, -5.4696699141100895], [31.32322330470336, -5.3232233047033635], [31.353553390593273, -5.25], [31.25, -5.0], [31.46966991411009, -4.4696699141100895], [32.0, -4.25], [32.25, -4.353553390593274], [32.32322330470336, -4.323223304703363], [32.46966991411009, -3.9696699141100895], [33.0, -3.75], [33.25, -3.8535533905932744], [33.5, -3.75], [33.75, -3.8535533905932744], [34.0, -3.75], [34.53033008588991, -3.9696699141100895], [34.67677669529664, -4.3232233047033635], [34.75, -4.353553390593274], [35.0, -4.25], [35.53033008588991, -4.4696699141100895], [35.67677669529664, -4.8232233047033635], [36.03033008588991, -4.9696699141100895], [36.25, -5.5], [36.14644660940672, -5.75], [36.25, -6.0], [36.14644660940672, -6.25], [36.25, -6.5], [36.03033008588991, -7.0303300858899105], [35.67677669529664, -7.1767766952966365], [35.53033008588991, -7.5303300858899105], [35.17677669529664, -7.6767766952966365], [35.03033008588991, -8.030330085889911], [34.5, -8.25], [33.96966991411009, -8.030330085889911], [33.82322330470336, -7.6767766952966365], [33.75, -7.646446609406726], [33.67677669529664, -7.6767766952966365], [33.64644660940672, -7.75], [33.75, -8.0], [33.64644660940672, -8.25], [33.75, -8.5], [33.53033008588991, -9.030330085889911], [33.0, -9.25], [32.75, -9.146446609406725], [32.5, -9.25], [31.96966991411009, -9.030330085889911], [31.82322330470336, -8.676776695296637], [31.46966991411009, -8.530330085889911], [31.32322330470336, -8.176776695296637], [30.96966991411009, -8.030330085889911], [30.82322330470336, -7.6767766952966365], [30.46966991411009, -7.5303300858899105], [30.25, -7.0], [30.353553390593273, -6.75]]]}, "2020-06-17T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[30.353553390593273, -6.75], [30.25, -6.5], [30.46966991411009, -5.9696699141100895], [30.82322330470336, -5.8232233047033635], [30.96966991411009, -5.4696699141100895], [31.32322330470336, -5.3232233047033635], [31.353553390593273, -5.25], [31.25, -5.0], [31.46966991411009, -4.4696699141100895], [32.0, -4.25], [32.25, -4.353553390593274], [32.32322330470336, -4.323223304703363], [32.46966991411009, -3.9696699141100895], [33.0, -3.75], [33.25, -3.8535533905932744], [33.5, -3.75], [33.75, -3.8535533905932744], [34.0, -3.75], [34.53033008588991, -3.9696699141100895], [34.67677669529664, -4.3232233047033635], [34.75, -4.353553390593274], [35.0, -4.25], [35.53033008588991, -4.4696699141100895], [35.67677669529664, -4.8232233047033635], [36.03033008588991, -4.9696699141100895], [36.25, -5.5], [36.14644660940672, -5.75], [36.25, -6.0], [36.14644660940672, -6.25], [36.25, -6.5], [36.03033008588991, -7.0303300858899105], [35.67677669529664, -7.1767766952966365], [35.53033008588991, -7.5303300858899105], [35.17677669529664, -7.6767766952966365], [35.03033008588991, -8.030330085889911], [34.5, -8.25], [33.96966991411009, -8.030330085889911], [33.82322330470336, -7.6767766952966365], [33.75, -7.646446609406726], [33.67677669529664, -7.6767766952966365], [33.64644660940672, -7.75], [33.75, -8.0], [33.64644660940672, -8.25], [33.75, -8.5], [33.53033008588991, -9.030330085889911], [33.0, -9.25], [32.75, -9.146446609406725], [32.5, -9.25], [31.96966991411009, -9.030330085889911], [31.82322330470336, -8.676776695296637], [31.46966991411009, -8.530330085889911], [31.32322330470336, -8.176776695296637], [30.96966991411009, -8.030330085889911], [30.82322330470336, -7.6767766952966365], [30.46966991411009, -7.5303300858899105], [30.25, -7.0], [30.353553390593273, -6.75]]]}, "2020-06-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[30.353553390593273, -6.75], [30.25, -6.5], [30.46966991411009, -5.9696699141100895], [30.82322330470336, -5.8232233047033635], [30.96966991411009, -5.4696699141100895], [31.32322330470336, -5.3232233047033635], [31.353553390593273, -5.25], [31.25, -5.0], [31.46966991411009, -4.4696699141100895], [32.0, -4.25], [32.25, -4.353553390593274], [32.5, -4.25], [33.03033008588991, -4.4696699141100895], [33.17677669529664, -4.8232233047033635], [33.53033008588991, -4.9696699141100895], [33.75, -5.5], [33.64644660940672, -5.75], [33.67677669529664, -5.8232233047033635], [33.75, -5.853553390593274], [34.0, -5.75], [34.25, -5.853553390593274], [34.5, -5.75], [35.03033008588991, -5.9696699141100895], [35.25, -6.5], [35.14644660940672, -6.75], [35.25, -7.0], [35.03033008588991, -7.5303300858899105], [34.5, -7.75], [34.25, -7.646446609406726], [34.0, -7.75], [33.75, -7.646446609406726], [33.67677669529664, -7.6767766952966365], [33.54289321881345, -8.0], [33.75, -8.5], [33.53033008588991, -9.030330085889911], [33.0, -9.25], [32.75, -9.146446609406725], [32.5, -9.25], [31.96966991411009, -9.030330085889911], [31.82322330470336, -8.676776695296637], [31.46966991411009, -8.530330085889911], [31.25, -8.0], [31.426776695296635, -7.5732233047033635], [31.0, -7.75], [30.46966991411009, -7.5303300858899105], [30.25, -7.0], [30.353553390593273, -6.75]]]}, "2020-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.53033008588991, -7.9696699141100895], [33.75, -8.5], [33.53033008588991, -9.030330085889911], [33.0, -9.25], [32.75, -9.146446609406725], [32.5, -9.25], [31.96966991411009, -9.030330085889911], [31.75, -8.5], [31.96966991411009, -7.9696699141100895], [32.5, -7.75], [32.75, -7.853553390593274], [33.0, -7.75], [33.53033008588991, -7.9696699141100895]]], [[[32.46966991411009, -5.9696699141100895], [33.0, -5.75], [33.53033008588991, -5.9696699141100895], [33.67677669529664, -6.3232233047033635], [33.75, -6.353553390593274], [34.0, -6.25], [34.53033008588991, -6.4696699141100895], [34.75, -7.0], [34.53033008588991, -7.5303300858899105], [34.0, -7.75], [33.75, -7.646446609406726], [33.5, -7.75], [33.25, -7.646446609406726], [33.0, -7.75], [32.75, -7.646446609406726], [32.5, -7.75], [31.96966991411009, -7.5303300858899105], [31.75, -7.0], [31.96966991411009, -6.4696699141100895], [32.32322330470336, -6.323223304703363], [32.46966991411009, -5.9696699141100895]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.787335938720787}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.8180435387007978}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.665430118227334, 19.84943539413132, 19.92966954954528, 19.614702714323244, 20.2759517745514, 20.558974496774283]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.88854567520042, 17.418223789297713, 17.354058125396307, 17.142755347919547, 17.961896634631273, 18.77514597987772]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5187145721497501, -1.8207912685678416, -1.7812397753131923, -2.0873701542632412, -1.673989128178556, -1.4895166597979872]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.829752630035557, -2.7690775957716482, -2.7802902224003674, -2.787335938720787, -2.3753682776230107, -1.6041916862838548]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.485373911906421, -1.8329728223180364, -1.800697200768801, -2.1459053276121414, -1.688151969602479, -1.4921441358931646]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7022714784678676, -2.5147522981602104, -2.5183574225863814, -2.781448682545754, -2.1784318413815043, -1.8326304152011617]}}