2026 Thomas R. Karl: Environmental Sciences Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Environmental Sciences	98	403	379	180	164	228	57624

Overview

Thomas R. Karl is affiliated with the National Oceanic and Atmospheric Administration in the United States. Their research primarily spans the fields of Environmental Science and Earth and Planetary Sciences.

The main topics of their research include:

Climate variability and models
Atmospheric chemistry and aerosols
Plant responses to elevated CO2
Air Quality and Health Impacts
Vehicle emissions and performance
Hydrology and Drought Analysis
Hydrology and Watershed Management Studies

Thomas R. Karl has published in multiple scientific venues, including:

Journal of Hydrology
Geophysical Research Letters
Environmental Pollution
OPAL (Open@LaTrobe) (La Trobe University)
Journal of Clinical Medicine

Frequent co-authors collaborating with Karl include:

Kenneth E. Kunkel
Stanislav Juráň
Kojo Kwakye Ofori-Amanfo
Ladislav Šigut
Ina Zavadilová

Representative recent papers authored or co-authored by Thomas R. Karl include:

Incorporating non-stationarity from climate change into rainfall frequency and intensity-duration-frequency (IDF) curves, 2022, Journal of Hydrology
Observed Climatological Relationships of Extreme Daily Precipitation Events With Precipitable Water and Vertical Velocity in the Contiguous United States, 2020, Geophysical Research Letters
Drought shifts ozone deposition pathways in spruce forest from stomatal to non-stomatal flux, 2025, Environmental Pollution
Organosulfates as Tracers for Secondary Organic Aerosol (SOA) Formation from 2-Methyl-3-Buten-2-ol (MBO) in the Atmosphere, 2020, OPAL (Open@LaTrobe) (La Trobe University)
Exploring the Effects of Local Air Pollution on Popliteal Artery Aneurysms, 2024, Journal of Clinical Medicine

Best Publications

Climate Extremes: Observations, Modeling, and Impacts

David R. Easterling;Gerald A. Meehl;Camille Parmesan;Stanley A. Changnon

5972
Citations
Modern Global Climate Change

Thomas R. Karl;Kevin E. Trenberth

2738
Citations
Global Climate Change Impacts in the United States

T. R. Karl;J. M. Melillo;T. C. Peterson

2516
Citations
Maximum and Minimum Temperature Trends for the Globe

David R. Easterling;Briony Horton;Philip D. Jones;Thomas C. Peterson

2216
Citations
Observed Variability and Trends in Extreme Climate Events: A Brief Review

David R. Easterling;J. L. Evans;P. Ya Groisman;T. R. Karl

2095
Citations
Secular Trends of Precipitation Amount, Frequency, and Intensity in the United States

Thomas R. Karl;Richard W. Knight

1929
Citations
Trends in Intense Precipitation in the Climate Record

Pavel Ya Groisman;Richard W. Knight;David R. Easterling;Thomas R. Karl

1750
Citations
Observed climate variability and change

Chris K. Folland;Thomas R. Karl;M. Jim Salinger

1457
Citations
A new perspective on recent global warming: asymmetric trends of daily maximum and minimum temperature

Thomas R. Karl;Philip D. Jones;Richard W. Knight;George Kukla

1248
Citations
Homogeneity adjustments of in situ atmospheric climate data: a review

Thomas C. Peterson;David R. Easterling;Thomas R. Karl;Pavel Groisman

1162
Citations
Changes in the Probability of Heavy Precipitation: Important Indicators of Climatic Change

Pavel Ya. Groisman;Thomas R. Karl;David R. Easterling;Richard W. Knight

1012
Citations
Effects of Clouds, Soil Moisture, Precipitation, and Water Vapor on Diurnal Temperature Range

Aiguo Dai;Kevin E. Trenberth;Thomas R. Karl

990
Citations
Urbanization: Its Detection and Effect in the United States Climate Record

Thomas R. Karl;Henry F. Diaz;George Kukla

959
Citations
Trends in high-frequency climate variability in the twentieth century

Thomas R. Karl;Richard W. Knight;Neil Plummer

947
Citations
Contemporary Changes of the Hydrological Cycle over the Contiguous United States: Trends Derived from In Situ Observations

Pavel Ya Groisman;Richard W. Knight;Thomas R. Karl;David R. Easterling

859
Citations
Indices of Climate Change for the United States

Thomas R. Karl;Richard W. Knight;David R. Easterling;Robert G. Quayle

829
Citations
A closer look at United States and global surface temperature change

J. Hansen;R. Ruedy;M. Sato;M. Imhoff

823
Citations
Possible artifacts of data biases in the recent global surface warming hiatus

Thomas R. Karl;Anthony Arguez;Boyin Huang;Jay H. Lawrimore

806
Citations
An Introduction to Trends in Extreme Weather and Climate Events: Observations, Socioeconomic Impacts, Terrestrial Ecological Impacts, and Model Projections*

Gerald A. Meehl;Thomas Karl;David R. Easterling;Stanley Changnon

775
Citations
CLIVAR/GCOS/WMO Workshop on Indices and Indicators for Climate Extremes Workshop Summary

Thomas R. Karl;Neville Nicholls;Anver Ghazi

725
Citations
A new look at maximum and minimum temperature trends for the globe

D.R Easterling;B. Horton;Philip Jones;T.C. Peterson

7
Citations

Frequent Co-Authors

David R. Easterling National Oceanic and Atmospheric Administration

Kenneth E. Kunkel North Carolina State University

Thomas C. Peterson National Oceanic and Atmospheric Administration

Kevin E. Trenberth University of Auckland

Russell S. Vose National Oceanic and Atmospheric Administration

George Kukla Lamont-Doherty Earth Observatory

Pavel Ya. Groisman North Carolina State University

Stanley A. Changnon University of Illinois at Urbana-Champaign

Kevin P. Gallo National Oceanic and Atmospheric Administration

Philip Jones University of East Anglia

External Links

Wikipedia of Thomas R. Karl Personal website of Thomas R. Karl

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