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1. Anthropogenic Biomes of the World, Version 1 [CIESIN_SEDAC_ANTHROMES_v1]
The Anthropogenic Biomes of the World, Version 1 data set describes globally-significant ecological patterns within the terrestrial biosphere caused by sustained direct human interaction with ecosystems, ...

2. MSU Ch 3/4 Daily Upper Troposphere Temps with Limb93 Correction V001 (MSUUTT) at GES DISC [GES_DISC_MSUUTT_V001]
Section 1. General Description Spencer and Christy (1990) demonstrated that accurate estimates of global ...

3. MSU Ch 4 Daily Lower Stratosphere Temps with Limb93 Correction V001 (MSULST) at GES DISC [GES_DISC_MSULST_V001]
Section 1. General Description Spencer and Christy (1990) demonstrated that accurate estimates of global ...

4. Downhole Logging Data from the Deep Sea Drilling Project [gov.noaa.ngdc.mgg.well_log.G00913]
Digital downhole wire-line logging data from the Deep Sea Drilling Project (DSDP) previously available from NGDC on CD-ROM are now available from the Borehole Research Group of the Lamont-Doherty ...

5. Water Column Sonar Data Collection [gov.noaa.ngdc.mgg.wcd.WCD_Collection]
The collection and analysis of water column sonar data is a relatively new avenue of research into the marine environment. Primary uses include assessing biological abundance, species identification,and ...

6. Worldwide Well Logs with Values of Conductivity, Bulk Density, Porosity, Grain Density, Resistivity, and Sonic Ratio Collected by the Ocean Drilling Program (ODP) [gov.noaa.ngdc.mgg.well_log.G04191]
World-wide digital well log data collected for the Ocean Drilling Program (ODP) by Schlumberger Offshore Services under contract to Texas A&M University. The data were in turn converted to ASCII form ...

7. NOAA/NGS Continuously Operating Reference Station (CORS) [gov.noaa.ngdc.stp.terrestrial.G10019]
The National Geodetic Survey (NGS), an office of NOAA's National Ocean Service, manages a network of Continuously Operating Reference Stations (CORS) that provide Global Navigation Satellite System ...

8. POES Space Environment Monitor, Energetic Particles [gov.noaa.ngdc.sem.poes_sem_g00188]
The TIROS/NOAA satellite series, also known as POES, is designed to meet the National Oceanic and Atmospheric Administration's need for operational, remote sensing products for numerical weather and ...

9. Satellite Anomalies Due to Environment [gov.noaa.ngdc.sem.sat_anom_g00937]
These events range from minor operational problems to permanent spacecraft failures. Australia, Canada, Germany, India, Japan, United Kingdom, and the United States have contributed data. This data ...

10. SeaWiFS Deep Blue Aerosol Optical Depth and Angstrom Exponent Daily Level 3 Data Gridded at 0.5 Degrees V004 (SWDB_L305) at GES DISC [GES_DISC_SWDB_L305_V004]
The SeaWiFS Deep Blue Level 3 Product contains daily global gridded (0.5 x 0.5 deg) data derived from SeaWiFS Deep Blue Level 2 data. In most cases, each data field represents the arithmetic mean ...

11. SeaWiFS Deep Blue Aerosol Optical Depth and Angstrom Exponent Daily Level 3 Data Gridded at 1.0 Degrees V004 (SWDB_L310) at GES DISC [GES_DISC_SWDB_L310_V004]
The SeaWiFS Deep Blue Level 3 Product contains daily global gridded (1 x 1 deg) data derived from SeaWiFS Deep Blue Level 2 data. In most cases, each data field represents the arithmetic mean of ...

12. SeaWiFS Deep Blue Aerosol Optical Depth and Angstrom Exponent Monthly Level 3 Data Gridded at 1.0 Degrees V004 (SWDB_L3M10) at GES DISC [GES_DISC_SWDB_L3M10_V004]
The SeaWiFS Deep Blue Level 3 Monthly Product contains monthly global gridded (1 x 1 deg) data derived from SeaWiFS Deep Blue Level 3 daily gridded data. The primary data parameters are aerosol ...

13. Calculations of the Total Number of Electrons Along a Ray Path Extending from the Transmitter to the Receiver [gov.noaa.ngdc.stp.ionosphere.G00566]
Ionospheric Total Electron Content (TEC) is the total number of electrons in a column of unit cross section extending from the transmitter to the receiver. TEC is calculated from observations of the ...

14. Defense Meteorological Satellite Program (DMSP) - Space Weather Sensors [gov.noaa.ngdc.stp.ionosphere.G10022]
The Defense Meteorological Satellite Program (DMSP) maintains a constellation of sun-synchronous, near-polar orbiting satellites. The orbital period is 101 minutes and inclination is 99 degrees. The ...

15. Ionospheric Oblique Incidence Soundings by Satellites [gov.noaa.ngdc.stp.ionosphere.G00563]
The oblique incidence sweep-frequency ionospheric sounding technique uses the same principle of operation as the vertical incidence sounder. The primary difference is that the transmitter and receiver ...

16. Measurement of Incoherent Scatter [gov.noaa.ngdc.stp.ionosphere.G00145]
For radio waves transmitted through the ionosphere with frequencies much larger (50 to 1300MHz) than the plasma frequency (up to 15MHz), very small-scale fluctuations of electron density will scatter ...

17. Solar Geophysical Data (SGD) Reports (1955-2009) [gov.noaa.ngdc.stp.solar.solar_geophysical_data]
Solar-Geophysical Data (SGD) reports were a comprehensive compilation of many different kinds of observational data of the sun's activity and its effects on the Earth. Data from the worldwide network ...

18. Sudden Ionospheric Disturbances (SID) [gov.noaa.ngdc.stp.ionosphere.G00581]
Sudden ionospheric disturbances (SID) are caused by solar flare enhanced X-rays in the 1 to 10 angstrom range. Solar flares can produce large increases of ionization in the D-region of the ionosphere ...

19. A Report on Geomagnetic Observatories, 1995 [gov.noaa.ngdc.stp.geomag.G01289]
Report on the status of world wide geomagnetic observatories

20. AA Geomagnetic Activity Indices From Two Antipodal Observatories in Australia and England [gov.noaa.ngdc.stp.indices.G00588]
The National Geophysical Data Center receives, on a monthly basis, indices that are based on the data from two approximately antipodal observatories in England and Australia. The AA-indices are available ...

21. AA Index [gov.noaa.ngdc.stp.indices.AA]
The geomagnetic aa index provides a long climatology of global geomagnetic activity using 2 antipodal observatories at Greenwich and Melbourne- IAGA Bulletin 37, 1975 p. 128

22. AM Index [gov.noaa.ngdc.stp.indices.AM]
Geomagnetic Range index using data from multiple observatories - Mayaud 1948

23. AP Index [gov.noaa.ngdc.stp.indices.AP]
Planetary Amplitude index - Bartels 1951. The a-index ranges from 0 to 400 and represents a K-value converted to a linear scale in gammas (nanoTeslas)--a scale that measures equivalent disturbance ...

24. Air Force Geophysics Laboratory Magnetometer Network [gov.noaa.ngdc.stp.geomag.G09997]
This file is comprised of the variation one minute values of the geomagnetic components X, Y and Z. These data were calculated by the Air Force Geophysics Laboratory magnetometer network during the ...

25. An Index (PC) Aimed at Monitoring the (P)olar (C)ap for Magnetic Activity [gov.noaa.ngdc.stp.indices.G01118]
PC is an index for magnetic activity in the (P)olar (C)ap. It is based on data from a single nearpole station, and aimed to monitor the polar cap magnetic activity generated by such solar wind parameters ...

26. Auroral Electrojet Index Designed to Provide a Global Measure, Hourly Intervals, of Auroral Zone Magnetic Activity [gov.noaa.ngdc.stp.indices.G00115]
The Auroral Electrojet (AE) index is designed to provide a global quantitative measure of auroral zone magnetic activity produced by enhanced ionospheric currents flowing below and within the auroral ...

27. Auroral Electrojet Index Designed to Provide a Global Measure, l-minute Intervals, of Auroral Zone Magnetic Activity [gov.noaa.ngdc.stp.indices.G00114]
The Auroral Electrojet index (AE) is designed to provide a global quantitative measure of auroral zone magnetic activity produced by enhanced ionospheric currents flowing below and within the auroral ...

28. Auroral Electrojet Indices Designed to Provide a Global Measure, 2.5-Minute Intervals, of Auroral Zone Magnetic Activity [gov.noaa.ngdc.stp.indices.G00113]
The Auroral Electrojet index (AE) is designed to provide a global quantitative measure of auroral zone magnetic activity produced by enhanced ionospheric currents flowing below and within the auroral ...

29. Boulder Magnetic Observatory [gov.noaa.ngdc.stp.geomag.G10130]
These data are vector and scalar component values of the Earth's magnetic field for 2004 recorded at the Boulder Magnetic Observatory in Colorado. Vector values are measured using 3 mutually orthogonal ...

30. DMSP OLS - Operational Linescan System [gov.noaa.ngdc.stp.dmsp.G01119]
Visible and infrared imagery from DMSP Operational Linescan System (OLS) instruments are used to monitor the global distribution of clouds and cloud top temperatures twice each day. The archive data ...

31. DMSP SSM/I- Microwave Imager [gov.noaa.ngdc.stp.dmsp.G01123]
The SSM/I is a seven-channel, four frequency, linearly-polarized, passive microwave radiometric system which measures atmospheric, ocean and terrain microwave brightness temperatures at 19.35, 22.235, ...

32. DMSP SSMT/2 - Atmospheric Water Vapor Profiler [gov.noaa.ngdc.stp.dmsp.G10018]
The SSM/T-2 sensor is a five channel, total power microwave radiometer with three channels situated symmetrically about the 183.31 GHz water vapor resonance line and two window channels. This instrument ...

33. DST Indices - Reflection Variations in the Magnetospheric Tail Current and Field-aligned Currents in the Magnetosphere [gov.noaa.ngdc.stp.indices.G00587]
The file is comprised of monthly DST indices. These indices are derived from a network of eight stations in the equatorial latitudes. Hourly DST indices provide an index of geomagnetic activity as ...

34. Defense Meteorological Satellite Program (DMSP) [gov.noaa.ngdc.stp.dmsp.G10021]
The Defense Meteorological Satellite Program (DMSP) satellites collect visible and infrared cloud imagery as well as monitoring the atmospheric, oceanographic, hydrologic, cryospheric and near-Earth ...

35. Digitized Historical Geomagnetic Publications in PDF format [gov.noaa.ngdc.stp.geomag.G10162]
A catalog of 732 historical geomagnetic publications that were at risk of loss have been digitized and converted in pdf documents.

36. ERA-40 [gov.noaa.ngdc.stp.indices.G10143]
ERA-40 project was to produce and promote the use of a comprehensive set of global analysis describing the state of the atmosphere and land and ocean-wave conditions from during the 45 years from ...

37. Electron Density Profile Data Contains Virtual Height/Frequency Pairs from a Profile or Profiles (Composite Months) of Ionograms [gov.noaa.ngdc.stp.ionosonde.G00146]
The Electron Density Profile, N(h), data set contains both individual profiles and composite months. The data consist of virtual height/frequency pairs from a profile or profiles (composite months) ...

38. Geomagnetic Absolute Mean Values at Hourly Intervals from 220 Observatories Worldwide [gov.noaa.ngdc.stp.geomag.G00002]
This file is comprised of absolute mean hourly values of the geomagnetic components D, H and Z or X, Y and Z. These values, on magnetic tape, are available from approximately 220 of the 400 worldwide ...

39. Geomagnetic Components D, H, X, Y, Z, and R 10-second Instantaneous Measurements [gov.noaa.ngdc.stp.geomag.G00122]
These data are generated as part of the International Magnetospheric Study. The file consists of 10-second instantaneous measurements for the geomagnetic components D, H, X, Y, Z and R. The 10 second ...

40. Geomagnetic Indices Bulletin (GIB) [gov.noaa.ngdc.stp.geomag.G01344]
The Geomagnetic Indices Bulletin is a one page sheet containing the magnetic indices Kp, Ap, Cp, An, As, Am and the provisional aa indices. The bulletin is published monthly.

41. Geomagnetic Kn, Ks, Km Indices [gov.noaa.ngdc.stp.indices.G01185]
A full description of the indices Kn, Ks, Km is given in a monography,"Indices Kn, Ks et Km, 1964-1967", edited in 1968 by the Centre National de la Recherche Scientifique, 15 quai Anatole, France, ...

42. Geomagnetic Observatory 10 Second Data [gov.noaa.ngdc.stp.geomag.G10122]
Geomagnetic 10 second data provides high temporal resolution of geomagnetic variations

43. Geomagnetic Observatory 2.5 Minute Data [gov.noaa.ngdc.stp.geomag.G10121]
Geomagnetic variation data with 2.5 minute resolution

44. Geomagnetic Observatory Annual Means Data [gov.noaa.ngdc.stp.geomag.G10118]
The National Geophysical Data Center / World Data Center, Boulder maintains an active database of worldwide geomagnetic observatory data. Historically, magnetic observatories were established to monitor ...

45. Geomagnetic Observatory Database February 2004 [gov.noaa.ngdc.stp.geomag.1806]
The National Geophysical Data Center maintains an active database of worldwide geomagnetic observatory data to further the understanding of Earth magnetism and the Sun-Earth environment. Historically, ...

46. Geomagnetic Observatory Hourly Data [gov.noaa.ngdc.stp.geomag.G10119]
Geomagnetic Hourly Averages from world wide observatories

47. Geomagnetic Observatory One Minute Data [gov.noaa.ngdc.stp.geomag.G10120]
Geomagnetic One Minute Means from world wide observatories

48. Geomagnetic Principal Magnetic Storms [gov.noaa.ngdc.stp.geomag.G01183]
The abbreviations used for observatory names are as follows: GEOMAGNETIC OBSERVATORIES Code Station Geomagnetic Latitude ABG Alibag AMS Martin de Vivie. These data present the principal magnetic storms ...

49. Geomagnetic Variation Data - 1-Minute Remote Geophysical Observatory Network (RGON) [gov.noaa.ngdc.stp.geomag.G00124]
This data file was generated as part of the International Magnetospheric Study (IMS). The file consists of values of the geomagnetic components D, H, X, Y, Z, and R averaged from 10-second instantaneous ...

50. Geomagnetic aa Indices [gov.noaa.ngdc.stp.indices.G00020]
The geomagnetic aa indices are the continuation of the series beginning in the year 1868. A full description of these indices is given in the International Association of Geomagnetism and Aeronomy ...

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