Evaluation of TMPA 3B43 and NCEP-CFSR precipitation products in drought monitoring over Singapore

Tan, Mou Leong; Chua, Vivien P.; Tan, Kok Chooi; Brindha, K.

doi:10.1080/01431161.2018.1425566

Cited by 35 publications

(19 citation statements)

References 41 publications

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“…Further research might explore the application of the Coordinated Regional Climate Downscaling Experiments-Southeast Asia (CORDEX-SEA) climate projections in basin-scale climate extremes assessment. Application and validation of satellite precipitation products [28,40,41] in measuring climate extremes could also be considered in the future works. Impact assessment of climate extremes on regional crops productivity [42] such as paddy could also be one of the potential future studies.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Precipitation and Temperature Extremes over the Muda River Basin, Malaysia

Tan

Samat

Chan

et al. 2019

Water

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Trends in precipitation and temperature extremes of the Muda River Basin (MRB) in north-western Peninsular Malaysia were analyzed from 1985 to 2015. Daily climate data from eight stations that passed high quality data control and four homogeneity tests (standard normal homogeneity test, Pettitt test, Buishand range test, and von Neumann ratio test) were used to calculate 22 Expert Team on Climate Change Detection and Indices (ETCCDI) extreme indices. Non-parametric Mann–Kendall, modified Mann–Kendall and Sens’ slope tests were applied to detect the trend and magnitude changes of the climate extremes. Overall, the results indicate that monthly precipitation tended to increase significantly in January (17.01 mm/decade) and December (23.23 mm/decade), but decrease significantly in May (26.21 mm/decade), at a 95% significance level. Monthly precipitation tended to increase in the northeast monsoon, but decrease in the southwest monsoon. Mann–Kendall test detected insignificant trends in most of the annual climate extremes, except the extremely wet days (R99p), mean of maximum temperature (TXmean), mean of minimum temperature (TNmean), cool days (TX10p), cool nights (TN10p), warm days (TX90p) and warm nights (TN90p) indices. The number of heavy (R10mm), very heavy (R20mm), and violent (R50mm) precipitation days changed at magnitudes of 0~2.73, −2.14~3.33, and −1.67~1.29 days/decade, respectively. Meanwhile, the maximum 1-day (Rx1d) and 5-day (Rx5d) precipitation amount indices changed from −10.18 to 3.88 mm/decade and −21.09 to 24.69 mm/decade, respectively. At the Ampangan Muda station, TNmean (0.32 °C/decade) increased at a higher rate compared to TXmean (0.22 °C/decade). The number of the cold days and nights tended to decrease, while an opposite trend was found in the warmer days and nights.

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Section: Discussionmentioning

confidence: 99%

Analysis of Precipitation and Temperature Extremes over the Muda River Basin, Malaysia

Tan

Samat

Chan

et al. 2019

Water

Self Cite

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“…Monthly applications of the GPM products will be more useful and widely applicable when a longer GPM measurement period (currently only 4 years) is available. For example, the TRMM monthly precipitation products are recently widely applied in a drought assessment [16,37] applications of the GPM products will be more useful and widely applicable when a longer GPM measurement period (currently only 4 years) is available. For example, the TRMM monthly precipitation products are recently widely applied in a drought assessment [16,37] that requires long term monthly precipitation information.…”

Section: Hydrological Assessmentmentioning

confidence: 99%

“…For example, the TRMM monthly precipitation products are recently widely applied in a drought assessment [16,37] applications of the GPM products will be more useful and widely applicable when a longer GPM measurement period (currently only 4 years) is available. For example, the TRMM monthly precipitation products are recently widely applied in a drought assessment [16,37] that requires long term monthly precipitation information. A comparison of the cumulative streamflow as a function of time simulated by the three GPM products at the Jambatan Guillermard was conducted to understand how the streamflow cumulative errors propagate with time.…”

Section: Hydrological Assessmentmentioning

confidence: 99%

Hydro-Meteorological Assessment of Three GPM Satellite Precipitation Products in the Kelantan River Basin, Malaysia

et al. 2018

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Abstract:The rapid development of Satellite Precipitation Products (SPPs) has heightened the need for a hydro-meteorological assessment of the Integrated Multi-satellite Retrievals for Global Precipitation Measurement (IMERG) products in different climate and geographical regions. Reliability of the IMERG early (IMERG_E), late (IMERG_L) and final (IMERG_F) run products in precipitation estimations was evaluated over the Kelantan River Basin, Malaysia from 12 March 2014 to 31 December 2016. The three IMERG products were then incorporated into a calibrated Soil and Water Assessment Tool (SWAT) model to assess their reliability in streamflow simulations. Overall, monthly precipitation variability is well captured by the three SPPs. The IMERG_F exhibited a smaller systematic bias (RB = 7.14%) compared to the IMERG_E (RB = −10.42%) and IMERG_L (RB = −17.92%) in daily precipitation measurement. All the three SPPs (NSE = 0.66~0.71 and R 2 = 0.73~0.75) performed comparably well as precipitation gauges (NSE = 0.74 and R 2 = 0.79) in the daily streamflow simulation. However, the IMERG_E and IMERG_L showed a significant underestimation of daily streamflow by 27.6% and 36.3%, respectively. The IMERG_E and IMERG_F performed satisfactory in streamflow simulation during the 2014-2015 flood period, with NSE and R 2 values of 0.5~0.51 and 0.62~0.65, respectively. With a better peak flow capture ability, the IMERG_F outperformed the near real-time products in cumulative streamflow measurement. The study has also shown that the point-to-pixel or pixel-to-pixel comparison schemes gave comparable conclusions. Future work should focus on the development of a standardized GPM hydro-meteorological assessment framework, so that a fair comparison among IMERG validation studies can be conducted.

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“…In order to evaluate the precipitation data (3B43) with 22 meteorological stations in Singapore from 1998 to 2014 and showed that the TRMM precipitation products performed well in accuracy [21]. Several other studies suggested that it is feasible to use TRMM precipitation data to monitor drought conditions in typical areas of China and Africa [22,23].…”

Section: Introductionmentioning

confidence: 99%

The Temporal-Spatial Characteristics of Drought in the Loess Plateau Using the Remote-Sensed TRMM Precipitation Data from 1998 to 2014

et al. 2018

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Rainfall gauges are always sparse in the arid and semi-arid areas of Northwest China, which makes it difficult to precisely study the characteristics of drought at a large scale in this region and similar areas. This study used the TRMM (The Tropical Rainfall Measuring Mission) multi-satellite precipitation data to study the spatial-temporal evolution of drought in the Loess Plateau based on the SPI (Standardized Precipitation Index) drought index for the period of 1998-2014. The results indicate that the monthly TRMM precipitation data are well matched with the observed precipitation, indicating that this remotely sensed data set can be reliably used to calculate the SPI drought index. Based on the study findings, the average precipitation in the Loess Plateau is showing a significant increasing trend at the rate of 4.46 mm/year. From the spatial perspective, the average annual precipitation in the Southeast is generally greater than that in the Northwest. However, the annual precipitation in the Southeast area is showing a decreasing trend, whereas, the annual precipitation in the northwest areas is showing an increasing trend. Through the SPI analysis, the 3-month SPI and 12-month SPI were both showing an increasing trend, which indicates that the drought severity in the Loess Plateau was a generally declining trend at a seasonal to annual time scale. From the spatial perspective, the SPI values in the Central and Northwest of the Loess Plateau were significantly increasing, whereas, the SPI values in the southern area of the Loess Plateau were slightly decreasing. From the seasonal characteristics, the high-risk area for drought in the spring was concentrated in the northeast and southwest part, and in the summer and autumn, the high-risk area was transferred to the south part. Through this study, it is concluded that the Loess Plateau was likely getting wetter during the time period since the Grain-for-Green Project (1999-2012) was implemented, which replaced much farmland with forestry. This is a positive signal for vegetation recovery and ecological restoration in the near future.

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Evaluation of TMPA 3B43 and NCEP-CFSR precipitation products in drought monitoring over Singapore

Cited by 35 publications

References 41 publications

Analysis of Precipitation and Temperature Extremes over the Muda River Basin, Malaysia

Analysis of Precipitation and Temperature Extremes over the Muda River Basin, Malaysia

Hydro-Meteorological Assessment of Three GPM Satellite Precipitation Products in the Kelantan River Basin, Malaysia

The Temporal-Spatial Characteristics of Drought in the Loess Plateau Using the Remote-Sensed TRMM Precipitation Data from 1998 to 2014

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