Wolfram Research

Near-Earth Comets

J2000 heliocentric ecliptic orbital elements of 160 Near-Earth Comets

Global Landslide Catalog

The Global Landslide Catalog considers all types of mass movements triggered by rainfall, which have been reported in the media, disaster databases, scientific reports, or other sources.

Orbital Variations and Insolation Database

Dataset of insolation values at different latitudes from 5000000 cal yr BP (-4998050 CE) to 0 cal yr BP (1950 CE)

Sample Data: Waka Trees

Locations of trees recorded at Waka National Park, Gabon, annotated with diameter (in centimeters) marks

Sample Data: Meuse River

Locations of soil samples along the Dutch bank of the Meuse river north of Maastricht, annotated with marks including elevation (in meters), distance to river (in meters), flooding frequency, cadmium, copper, lead, an...

Paleoclimate Data Records Derived from the Vostok Ice Core

Datasets of CO2 concentration and temperature historical records derived from the air and isotopes trapped in the ice core

Sample Data: Spruce Trees

Locations of spruce trees annotated with diameter marks

US Coal Fields

This dataset represents coal fields in Alaska and the conterminous United States.

Sample Data: Urkiola Woods

Locations of birch and oak trees in a secondary wood in Urkiola Natural Park (Spain) annotated with birch / oak marks

Sample Data: US Ozone 2021

Total ozone over US measured on 5 Aug 2021

Sample Data: Ozarks Karst

Locations of springs and sinkholes in the Ozark Plateaus Physiographic Province (Ozarks) in Arkansas

Sample Data: Swiss Rainfall

Sample locations of Swiss rainfall annotated with rainfall marks (in mm)

Sample Data: US Earthquakes

Earthquakes in the U.S. from July 28th, 1789 to March 24th, 2010

Sample Data: World Volcanos

Locations of volcanos in the world

Meteorite Landings

This comprehensive data set from The Meteoritical Society contains information on all of the known meteorite landings.

Bortle scale

Numeric scale that measures the night sky's brightness

Sample Data: Earthquake Waiting Times

The time in days between serious (magnitude at least 7.5 or over 1000 fatalities) earthquakes worldwide, from 12/16/1902 to 3/4/1977

NASA GISTEMP Global Means dTs

Global-mean monthly, seasonal, and annual temperatures from dTs since 1880.


Global-mean monthly, seasonal, and annual temperatures since 1880.

Sample Data: Yellowstone Geothermal Features

Locations of some geothermal features and geysers in the Yellowstone National Park

Coastline Fractal Dimensions

Fractal dimensions of coastlines of all countries, dependencies, and territories

Dust Frequency by WMO Station

Average annual and monthly number of days with dusty weather for Iran, Jordan, and Saudi Arabia

Thunder Frequency by WMO Station

Average annual and monthly number of days with thunder

Top Oil Fields 2001

Top producing oil fields in 2001

Overcast Frequency by WMO Station

Average annual and monthly number of days without sunshine

Rain Frequency by WMO Station

Average annual and monthly number of days with rain for 28 nations

Snowfall Frequency by WMO Station

Average annual and monthly number of days with snowfall for 9 nations

Kepler-11 Light Curve Data

Light curve data for planetary system Kepler-11

National Science Foundation Grants - 2015

Data on National Science Foundation grants and associated investigators and institutions awarded in the year 2015

Sample Data: Swedish Pines

Locations of pine tress

Sea Level and Temperatures Over the Last 40 Million Years

Dataset of eustatic sea level and temperatures over the last 40 million years

Sample Data: Longleaf Pines

Locations of longleaf pine trees annotated with diameter at breast height (in centimeters) marks

Wind Speed Measurements

Average daily wind speed at 12 meteorological stations in the Republic of Ireland 1961-1978

Total Wildland Fires and Acres (1926-2019)

Annual wildland fire statistics for federal and state agencies

GMM-3 Mars Gravity Map

Goddard Mars Model 3 map of the gravity field of Mars

Gridded World Population Density

UN-adjusted gridded world population density for the years 2000, 2005, 2010, and 2015