TRMM 3B43 Product-Based Spatial and Temporal Anatomy of Precipitation Trends: Global Perspective

Jaber, Salahuddin M.; Abu-Allaban, Mahmoud

doi:10.1007/s10661-020-08405-z

Cited by 6 publications

(5 citation statements)

References 31 publications

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“…A faster recent increase in precipitation over global land is inferred comparing the precipitation trends over 1960with 1980). Over the global ocean, the comparison between precipitation datasets is compromised by the different measurement periods, as well as the spatial coverage of the available products (Adler et al, 2017;Nguyen et al, 2018;Jaber and Abu-Allaban, 2020;Nogueira, 2020), limiting the ability to assess the sign and magnitude of precipitation trends. The GPCPv2.3 database (Adler et al, 2017(Adler et al, , 2018) exhibits an increase of 2.94 mm yr -1 per decade over 1980-2019, principally due to the trends over the Indian ocean and in the tropical western Pacific (Figure 2.15f).…”

Section: Global Precipitationmentioning

confidence: 99%

Changing State of the Climate System

2023

Climate Change 2021 – The Physical Science Basis

120

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Chapter 2 assesses observed large-scale changes in climate system drivers, key climate indicators and principal modes of variability. Chapter 3 considers model performance and detection/attribution, and Chapter 4 covers projections for a subset of these same indicators and modes of variability. Collectively, these chapters provide the basis for later chapters, which focus upon processes and regional changes. Within Chapter 2, changes are assessed from in situ and remotely sensed data and products and from indirect evidence of longer-term changes based upon a diverse range of climate proxies. The timeevolving availability of observations and proxy information dictate the periods that can be assessed. Wherever possible, recent changes are assessed for their significance in a longer-term context, including target proxy periods, both in terms of mean state and rates of change.The increase in GMST since the mid-19th century was preceded by a slow decrease that began in the mid-Holocene (around 6500 years ago) (medium confidence). {2.3.1.1, Cross-Chapter Box 2.1} Changes in GMST and global surface air temperature (GSAT) over time differ by at most 10% in either direction (high confidence), and the long-term changes in GMST and GSAT are presently assessed to be identical. There is expanded uncertainty in GSAT estimates, with the assessed change from 1850-1900 to 1995-2014 being 0.85 [0.67 to 0.98] °C. {Cross-Chapter Box 2.3} The troposphere has warmed since at least the 1950s, and it is virtually certain that the stratosphere has cooled. In the Tropics, the upper troposphere has warmed faster than the near-surface since at least 2001, the period over which new observational techniques permit more robust quantification (medium confidence). It is virtually certain that the tropopause height has risen globally over 1980-2018, but there is low confidence in the magnitude. {2.3.1.2} Changes in several components of the global hydrological cycle provide evidence for overall strengthening since at least 1980 (high confidence). However, there is low confidence in comparing recent changes with past variations due to limitations in paleoclimate records at continental and global scales. Global land precipitation has likely increased since 1950, with a faster increase since the 1980s (medium confidence). Nearsurface specific humidity has increased over both land (very likely) and the oceans (likely) since at least the 1970s. Relative humidity has very likely decreased over land areas since 2000. Global total column water vapour content has very likely increased during the satellite era. Observational uncertainty leads to low confidence in global trends in precipitation minus evaporation and river runoff. {2.3.1.3} Several aspects of the large-scale atmospheric circulation have likely changed since the mid-20th century, but limited proxy evidence yields low confidence in how these changes compare to longer-term climate. The Hadley circulation has likely widened since at least the 1980s, and extratropical storm tracks have likely shi...

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Section: Global Precipitationmentioning

confidence: 99%

Changing State of the Climate System

2023

Climate Change 2021 – The Physical Science Basis

120

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“…Recent assessments showed a general increase in annual land precipitation over the period of 1980–2019, but the increased trends derived from several data sets (including the CRU data set) are not statistically significant (IPCC, 2021). Over the global ocean, the comparison between precipitation data sets is compromised by the different measurement periods, as well as the spatial coverage of the available products (Adler et al., 2017; Jaber & Abu‐Allaban, 2020; Nguyen et al., 2018; Nogueira, 2020), limiting the ability to assess the sign and magnitude of precipitation trends. The GPCPv2.3 database exhibits an increase of 2.94 mm yr −1 per decade over 1980–2019 (IPCC, 2021), but our analysis showed this trend is also not statistically significant (data not shown).…”

Section: Discussionmentioning

confidence: 99%

Weakened Increase in Global Near‐Surface Water Vapor Pressure During the Last 20 Years

Xu,

Xia,

Piao

et al. 2024

Geophysical Research Letters

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It is well known that global warming increases the atmospheric water vapor content, which results in substantial changes in the hydrological cycle. Using five observational data sets, the results show that an increasing trend of near‐surface water vapor pressure (AVP) over land and ocean was significant from 1975 to 1998, while such an increasing trend in AVP subsequently weakened from 1999 to 2019. This phenomenon is associated with decreased oceanic evaporation and land surface evapotranspiration in response to recent climate variations. One consequence of such a phenomenon is a large increase in near‐surface vapor pressure deficit (VPD), which in turn increases atmospheric demand for water vapor and thus aridity and drought over land. This result emphasizes the importance of water vapor change under global warming.

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“…Satellite remote sensing observation is the only means available so far to comprehensively study global precipitation [4] . Some studies have shown that satellite precipitation products (SPPs) can provide higher spatiotemporal resolution precipitation data and play a significant role in global precipitation observation [5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Exploring the source of GPM IMERG and GSMaP errors based on error component method over the Yellow River basin

Liu,

He,

Zhang

2024

Fourth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2023)

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Precise precipitation data is essential for effective hydrologic modeling, water resource management, and climate research. IMERG and GSMaP, which are high-resolution and wide-coverage satellite products, have great potential in monitoring precipitation. However, further research is required to understand the error characteristics of precipitation. This study focuses on the Yellow River Basin, results demonstrate that: (1) GPM IMERG and GSMaP display strong spatial patterns, with more precise detection in the east than the west. Hit bias dominates in the total bias, and each product overestimates the error. The GSMaP_Gauge product performs better in reducing hit bias and improving detection accuracy. (2) The Yellow River Basin is generally biased towards low-intensity precipitation events, with the GSMaP_Gauge product performing the best, followed by the IMERG_Final product with the smallest missed precipitation. (3) Altitude has a significant impact on the total bias and error components, mainly showing a negative correlation. As altitude increases, the total bias and error components gradually decrease. This study can facilitate the creation of quantitative bias models and the implementation of techniques to reduce bias in GPM IMERG and GSMaP by examining the structure and attributes of error components.

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TRMM 3B43 Product-Based Spatial and Temporal Anatomy of Precipitation Trends: Global Perspective

Cited by 6 publications

References 31 publications

Changing State of the Climate System

Changing State of the Climate System

Weakened Increase in Global Near‐Surface Water Vapor Pressure During the Last 20 Years

Exploring the source of GPM IMERG and GSMaP errors based on error component method over the Yellow River basin

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