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Emergency response service of scientific data for Extremely Strong Cyclone “MOCHA” disaster in Bay of Bengal
Publish time: 2023/05/14
Since May 13th, the waters near Cox's Bazar Port in southeast coast of Bangladesh have gradually become rough. Since midnight on May 13th, MOCHA has had maximum sustained winds of 180 kilometers per hour and gusts of 200 kilometers per hour in a 74 km area extending outward from the center. Strong cyclone storm "MOCHA" in the Bay of Bengal has strengthened into a strong cyclone storm in the morning of May 13th (Beijing time, the same below). At 8:00, its center was located in the middle sea of the Bay of Bengal about 680 kilometers south by west direction of Sittwe, Myanmar. The maximum wind near the center was 15 force (50 m/s, equivalent to strong typhoon level in China). By the afternoon of 14 local time, MOCHA had passed through and gradually moved away from the coastal area between Cox's Bazar and northern Myanmar, posing no major tidal wave threat as of 13:00. MOCHA had maximum sustained winds of 160 kilometers per hour within 74 kilometers of the storm's center, with gusts likely to increase to 180 kilometers per hour.
Total download data:18920times,Total Data volume downloaded  93.3 TiB
# filename 来源 file size Download count Download
1 Wind Park Data -3h-processed.zip NCDC 5.4 MiB 617
2 Wind Park Data -3h-Raw.zip NCDC 156.4 MiB 627
3 DEM 30m for Extreme Cyclone Storm "MOCHA" Disaster.zip NCDC 6.4 GiB 641
4 DEM 90m for Extreme Cyclone Storm ""MOCHA"" Disaster.zip NCDC 595.2 MiB 608
5 FY-4A_Imager L1 1km data for Extreme Cyclone Storm "MOCHA" Disaster.zip NCDC 33.5 GiB 623
6 FY-4A_ Quite a black body temperature real-time product for Extreme Cyclone Storm "MOCHA" Disaster.zip NCDC 7.5 GiB 624
7 FY-4B_ sandwich composite map for Extreme Cyclone Storm "MOCHA" Disaster.zip NCDC 6.9 GiB 647
8 FY-4B_ Severe storm image product for Extreme Cyclone Storm "MOCHA" Disaster.zip NCDC 238.2 MiB 598
9 FY-4B_ Quite a black body temperature real-time product for Extreme Cyclone Storm "MOCHA" Disaster.zip NCDC 32.7 GiB 590
10 FY-4B_ Cloud Image product for Extreme Cyclone Storm "MOCHA" Disaster.zip NCDC 247.3 MiB 621
11 Landsat_ 202304 for Extreme Cyclone Storm ""MOCHA"" Disaster.zip NCDC 14.3 GiB 547
12 Landsat_ 202305 for Extreme Cyclone Storm ""MOCHA"" Disaster.zip NCDC 15.0 GiB 613
13 NCEP reanalysis data for the extremely strong cyclone storm ""MOCHA"" disaster 20230501-20230514. zip NCDC 2.0 GiB 610
14 Sentinel-1_ GRD for Extremely strong cyclone storm ""MOCHA"" disaster.zip NCDC 6.9 GiB 604
15 Sentinel-1_ SLC for Extremely strong cyclone storm ""MOCHA"" disaster.zip NCDC 31.7 GiB 596
16 Grid based bathymetric data for extremely strong cyclone storm ""MOCHA"" disaster. zip NCDC 43.8 MiB 591
17 national accounts of Bangladesh 2017-2021.xlsx NCDC 1.2 MiB 480
18 Gross Domestic Product of Bangladesh 2017-2022. xlsx NCDC 33.9 KiB 467
19 GDP related indicator data of Bangladesh.xlsx NCDC 105.9 KiB 442
20 Precipitation Data 2023 of The People's Republic of Bangladesh.zip NCDC 23.0 KiB 517
21 Statistical data of other industries in Bangladesh.xlsx NCDC 31.3 KiB 455
22 Meteorological Data (All Meteorological Elements) of The People's Republic of Bangladesh 2023.zip NCDC 81.3 KiB 565
23 Population Data of Bangladesh 2017-2021.xlsx NCDC 9.5 KiB 456
24 Annual GDP growth rate of Myanmar.xlsx NCDC 11.7 KiB 464
25 Gross Domestic Product by Activity Sector at Current Prices of Myanmar (2006-2020).xlsx NCDC 12.2 KiB 400
26 Precipitation Data 2023 of Myanmar.zip NCDC 27.6 KiB 508
27 Annual Rainfall, Temperature, and Relative Humidity in Myanmar (2020, (2011-2020 average)).xlsx NCDC 13.0 KiB 420
28 Meteorological Data (All Meteorological Elements) 2023 of Myanmar.zip NCDC 103.6 KiB 571
29 Population Estimation and sex ratio of Myanmar (2016-2020).xlsx NCDC 11.6 KiB 404
30 Population Growth and Density of Myanmar (2016-2020).xlsx NCDC 11.3 KiB 406
31 Monthly Rainfall in Myanmar (2011-2020 average).xlsx NCDC 13.0 KiB 444
32 Monthly mean temperature in Myanmar (2011-2020 average).xlsx NCDC 12.8 KiB 435
33 China Meteorological Administration Tropical Cyclone Best Path Dataset (1949-2022).zip NCDC 894.7 KiB 560
34 All meteorological element data from 330 stations around the mobile path 2023.zip NCDC 1.2 MiB 571
35 All meteorological element data from 345 stations around the mobile path (1970-2022).zip NCDC 72.0 MiB 598
1. Extremely strong Cyclone "MOCHA" made landfall in Rakhine State in western Myanmar, with a maximum wind speed of more than 200 kilometers per hour. Heavy rain and waves were seen along the coast of Rakhine State, and strong winds and rain hit Nay Pyi Taw, Irrawaddy, Yangon and Tanintharyi provinces, as well as river surges and flash floods in mountainous areas such as Chin State.
2.The Bay of Bengal, as an area with frequent Asian summer monsoon activities and the strongest rainfall, is an important water vapor source for precipitation in China and a key area for water vapor transport southward of floods in China. The impact of the Gulf storm on China's weather was mainly concentrated in Yunnan-Guizhou Plateau and Qinghai-Tibet Plateau, especially in southern Tibet and southwestern Yunnan. After the landfall of the Bay of Bengal, it interacts with favorable atmospheric environment flow fields (such as the southern branch trough, subtropical high, etc.), forming a strong southwest airflow, transporting water vapor from the Bay of Bengal to China, which can produce precipitation in southwest China. The southwest water vapor transport generated by the the Bay of Bengal Storm provided favorable water vapor conditions for sustained heavy precipitation in the southwest. Therefore, the storm may cause long-term rainfall in Guangxi, Guangdong, Hainan and other places. Motuo, Mangkang, Basu and other places may have heavy rain, high altitude areas may have heavy snow.
3.The strong ocean-land-air interaction in the northern Indian Ocean and tropical Asia in spring is an important reason to stimulate the occurrence of the vortex in the Bay of Bengal. The intra-seasonal-oscillation of the tropical atmosphere (ISO) can modulate the generation of storms in the Bay of Bengal. Due to the cyclonic circulation, boundary layer convergence and abundant water vapor caused by the northward spreading ISO, the intensity of tropical cyclones can develop rapidly, and there is a high possibility of stronger tropical cyclones in the Bay of Bengal in April and May.
4.Due to the flared shape of the Bay of Bengal, storms generated in the Bay of Bengal or transferred from the South China Sea through the Indochina Peninsula are prone to land in the coastal areas of the sea. Storms in the Bay of Bengal are mostly generated in the central and northern Bay of Bengal, and the monthly changes of storm frequency, average and longest duration are bimodal distribution.