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Topic · Global and Planetary Change

Hydrology and Drought Analysis

Hydrology and Drought Analysis is a research topic within Global and Planetary Change. Science Explorer counts 26k research works in it since 1950. 10.1% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on the monitoring, assessment, and impacts of drought at a global scale. It covers various aspects such as the development of drought indices, the influence of global warming and climate change on drought severity and frequency, hydrological implications, remote sensing techniques for drought monitoring, and the use of evapotranspiration data. The research also delves into the challenges and future directions in drought assessment.

  • Drought
  • Monitoring
  • Global Warming
  • Hydrological
  • Indices
  • Remote Sensing
  • Climate Change
  • Evapotranspiration
  • Severity
  • Frequency
Research works
26k
fractional, since 1950
In the world top 10%
2.7k
per year above
Top-10% rate
10.1%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+12%
the tick is no change
Largest producer
China
30% of the 10 largest, 2022-now
Hydrology and Drought Analysis

Which countries lead Hydrology and Drought Analysis research?

By volume, China and India publish the most (1.4k and 1.1k works in 2022-now).

By volume, 2022-now

  1. 1 China 1.4k works
  2. 2 India 1.1k works
  3. 3 United States 699 works
  4. 4 Iran 294 works
  5. 5 Türkiye 279 works
  6. 6 Germany 216 works
  7. 7 United Kingdom 203 works
  8. 8 Italy 186 works
  9. 9 Brazil 183 works
  10. 10 France 154 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

China: 29.7%India: 22.7%United States: 15.0%Iran: 6.3%6 others listed: 26.3%30%largest
China1,382 · 29.7%India1,057 · 22.7%United States699 · 15.0%Iran294 · 6.3%6 others listed1,222 · 26.3%

Shares of the rows listed above, not of the whole node.

Which institutions lead Hydrology and Drought Analysis research?

By volume in 2022-now, Chinese Academy of Sciences publishes the most Hydrology and Drought Analysis research, followed by Hohai University and Beijing Normal University.

By volume, 2022-now

  1. 1 Chinese Academy of SciencesChina 153 works
  2. 2 Hohai UniversityChina 62 works
  3. 3 Beijing Normal UniversityChina 53 works
  4. 4 Centre National de la Recherche ScientifiqueFrance 49 works
  5. 5 Nanjing University of Information Science and TechnologyChina 45 works
  6. 6 Ministry of Water Resources of the People's Republic of ChinaChina 45 works
  7. 7 Helmholtz Association of German Research CentresGermany 43 works
  8. 8 Wuhan UniversityChina 36 works
  9. 9 Indian Institute of Technology RoorkeeIndia 36 works
  10. 10 Indian Council of Agricultural ResearchIndia 34 works

Who are the leading researchers in Hydrology and Drought Analysis?

The most-cited researchers publishing on Hydrology and Drought Analysis include Jun Wang, Xiaogang Wang and Philippe Ciais.

  1. 1 Jun Wang China 340k citations
  2. 2 Xiaogang Wang China 260k citations
  3. 3 Philippe Ciais France 237k citations
  4. 4 Gordon K. Smyth Australia 237k citations
  5. 5 Paul M. Thompson United States 196k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Hydrology and Drought Analysis?

The most cited paper in Hydrology and Drought Analysis is "Comparing the Areas under Two or More Correlated Receiver Operating Characteristic Curves: A Nonparametric Approach" (Elizabeth R. DeLong, David M. DeLong, Daniel L. Clarke‐Pearson, 1988), with 23,031 citations. Next come "A Multiscalar Drought Index Sensitive to Global Warming: The Standardized Precipitation Evapotranspiration Index" (9,596) and "Decomposition of the mean squared error and NSE performance criteria: Implications for improving hydrological modelling" (7,007).

Most cited papers
#PaperReleasedCitations
1 Comparing the Areas under Two or More Correlated Receiver Operating Characteristic Curves: A Nonparametric Approach Elizabeth R. DeLong, David M. DeLong, Daniel L. Clarke‐Pearson · Biometrics Sep 1988 23,031
2 A Multiscalar Drought Index Sensitive to Global Warming: The Standardized Precipitation Evapotranspiration Index Sergio Martín Vicente-Serrano, Santiago Beguerı́a, Juan Ignacio López‐Moreno · Journal of Climate Open access 19 Nov 2009 9,596
3 Decomposition of the mean squared error and NSE performance criteria: Implications for improving hydrological modelling Hoshin V. Gupta, Harald Kling, Koray K. Yılmaz et al. · Journal of Hydrology Open access 9 Aug 2009 7,007
4 Advantages of the mean absolute error (MAE) over the root mean square error (RMSE) in assessing average model performance C. J. Willmott, Kenji Matsuura · Climate Research Open access 2005 6,550
5 Strictly Proper Scoring Rules, Prediction, and Estimation Tilmann Gneiting, Adrian E. Raftery · Journal of the American Statistical Association 4 Feb 2007 5,828
All 100 most cited papers, with filters and sorting

Where is Hydrology and Drought Analysis research done?

The largest centres of Hydrology and Drought Analysis research in 2022-now are Beijing (China), Nanjing (China), Tehran (Iran) and Wuhan (China). Among places with at least 20 works in it, it is an unusually large share of all research in Roorkee.

Largest cities, 2022-now

  1. 1 BeijingChina 403 works
  2. 2 NanjingChina 155 works
  3. 3 TehranIran 104 works
  4. 4 WuhanChina 93 works
  5. 5 New DelhiIndia 75 works
  6. 6 ZhengzhouChina 60 works
  7. 7 GuangzhouChina 56 works
  8. 8 RoorkeeIndia 52 works
  9. 9 DhakaBangladesh 49 works
  10. 10 Xi'anChina 48 works

Where it is the local speciality

  1. RoorkeeIN · 51.6 works14×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Hydrology and Drought Analysis than the world average.

See Hydrology and Drought Analysis on the map

Where is the best place to study Hydrology and Drought Analysis?

Among universities, judged by research, Beijing Normal University, Nanjing University of Information Science and Technology and ETH Zurich score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%mean 24.77%fractional works in this field (log) →share of work in the world top 10% →Indian Institute of …Beijing Normal Unive…ETH ZurichNanjing University o…
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1Beijing Normal UniversityChina 69.723.4%10.0×53 +18.9%
2Nanjing University of Information Science and TechnologyChina 64.619.9%16.6×45 +19.4%
3ETH ZurichSwitzerland 60.823.0%4.0×19 +35.4%
4Indian Institute of Technology GandhinagarIndia 60.242.1%18.6×12 -10.5%
5Hohai UniversityChina 58.816.3%15.8×62 -3.6%
6Vrije Universiteit AmsterdamNetherlands 53.829.8%4.0×11 +11.4%
7University of Chinese Academy of SciencesChina 53.522.9%2.9×31 +6.6%
8Université Mohammed VI PolytechniqueMorocco 52.919.5%19.8×12 +430.2%
9Wuhan UniversityChina 52.424.4%3.8×36 -1.8%
10United Arab Emirates UniversityUnited Arab Emirates 52.026.4%6.5×10 +120.2%

Universities only. The score blends excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Hydrology and Drought Analysis, country by country

Is Hydrology and Drought Analysis research growing?

Output in 2022-2025 was 12% higher than in 2018-2021, peaking in 2021. The fastest-growing topics are Hydrology and Drought Analysis.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Hydrology and Drought Analysis as a percentage of every work published that year, 0.029% in 2024.

still counting0.020%0.040%Hydrology and Drought Analysis0.030% in 202519801990200020102020

Fractional works of Hydrology and Drought Analysis over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Hydrology and Drought Analysis10.1% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

Questions people ask

Who leads drought research?

By volume in 2022-now, Chinese Academy of Sciences publishes the most Hydrology and Drought Analysis research, followed by Hohai University and Beijing Normal University. By volume, China and India publish the most (1.4k and 1.1k works in 2022-now).

All 1,273 questions in the Question Catalogue

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