Journal of Tropical Oceanography ›› 2024, Vol. 43 ›› Issue (5): 32-40.doi: 10.11978/2023153CSTR: 32234.14.2023153
• Marine Meteorology • Previous Articles Next Articles
Retrieval of typhoon precipitation rate over ocean surface based on FY-3D/MWRI Data*
SHANG Jie1(
), WU Ying1,2(), ZOU Yike1, MA Jingwen1
- 1. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, CMA Key Laboratory for Aerosol-Cloud-Precipitation, Nanjing University of Information Science and Technology, Nanjing 210044, China
2. School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China
-
Received:2023-10-17Revised:2024-01-12Online:2024-09-10Published:2024-10-10 -
Supported by:National Natural Science Foundation of China(U2242212)
Cite this article
SHANG Jie, WU Ying, ZOU Yike, MA Jingwen. Retrieval of typhoon precipitation rate over ocean surface based on FY-3D/MWRI Data*[J].Journal of Tropical Oceanography, 2024, 43(5): 32-40.
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Tab. 1
Regression coefficients obtained by multivariate linear fitting of 89.0 GHz vertically polarized brightness temperature based on two sets (ascending/descending orbit) of L1 brightness temperature data"
| 数据类型 | ${{a}_{0}}$ | ${{a}_{1}}$ | ${{a}_{2}}$ | ${{a}_{3}}$ |
|---|---|---|---|---|
| 升轨洋面 | 244.1540 | 0.1674 | -1.2956 | 1.0746 |
| 降轨洋面 | 258.6989 | -0.0507 | -1.0842 | 0.9876 |
Tab. 1
Tab. 2
Regression coefficients obtained by multivariate linear fitting of rainfall intensity based on two sets (ascending/descending orbit) of L1 brightness temperature data and L2 product precipitation rate data, respectively"
| 数据类型 | ${{b}_{0}}$ | ${{b}_{1}}$ | ${{b}_{2}}$ |
|---|---|---|---|
| 升轨洋面 | 76.2498 | -0.2809 | -0.2040 |
| 降轨洋面 | 67.6256 | -0.2488 | -0.1592 |
Tab. 2
Tab. 3
The significance level test results of the two models"
| 轨道类型 | 判定系数(R2) | F统计量观测值 | 检验的p的值 | 误差方差估计 |
|---|---|---|---|---|
| 升轨 | 0.5275 | 131790 | 0 | 7.4280 |
| 降轨 | 0.5382 | 136910 | 0 | 5.5935 |
Tab. 3
Fig. 1
Ocean surface of ascending orbits (Typhoon Muifa and Doksuri). (a) Distribution map of precipitation rate of L2 products; (b) inversion of precipitation rate distribution map; (c) inversion of regional map of precipitation rate distribution; (d) the probability density scatter-plot of the L2 product precipitation rate and the inversion precipitation rate"
Fig. 1
Tab. 4
R, RMSE and MAE between L2 product precipitation rate and inverted precipitation rate of the typhoon cases (ascending orbits)"
| 数据类型 | 台风个例 | 数据个数 | R | MAE/(mm·h-1) | RMSE/(mm·h-1) |
|---|---|---|---|---|---|
| 升轨洋面 | 梅花+杜苏芮 | 118038 | 0.72632 | 2.3055 | 2.7254 |
| 烟花 | 91829 | 0.69336 | 2.3048 | 2.7166 | |
| 轩岚诺 | 37815 | 0.70121 | 2.2256 | 2.6404 |
Tab. 4
Tab. 5
R, RMSE and MAE between L2 product precipitation rate and inverted precipitation rate of the typhoon cases (descending orbits)"
| 数据类型 | 台风个例 | 数据个数 | R | MAE/(mm·h-1) | RMSE/(mm·h-1) |
|---|---|---|---|---|---|
| 降轨洋面 | 梅花+杜苏芮 | 117476 | 0.73363 | 1.9079 | 2.3651 |
| 烟花 | 52153 | 0.68845 | 1.9782 | 2.5495 | |
| 轩岚诺 | 43314 | 0.70847 | 2.0549 | 2.6255 |
Tab. 5
Fig. 2
Ocean surface of ascending orbits (July 17, 2021 — July 31, 2021, Typhoon In-fa). (a) Distribution map of precipitation rate of L2 products; (b) inversion of precipitation rate distribution map; (c) inversion of regional map of precipitation rate distribution; (d) the probability density scatter-plot of the L2 product precipitation rate and the inversion precipitation rate"
Fig. 2
Fig. 3
Ocean surface of ascending orbits (August 29, 2022 — September 3, 2022, Typhoon Hinnamnor). (a) Distribution map of precipitation rate of L2 products; (b) inversion of precipitation rate distribution map; (c) inversion of regional map of precipitation rate distribution; (d) the probability density scatter-plot of the L2 product precipitation rate and the inversion precipitation rate"
Fig. 3
Fig. 4
The probability density scatter-plot of IMERG precipitation rate product and the inversion precipitation rate (ascending orbits). (a) Typhoon In-fa; (b) Typhoon Hinnamnor"
Fig. 4
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