Real Time Nephanalysis (RTNEPH) Cloud Layer Information from USAF Combat Climatology Center (AFCCC)

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Abstract: This dataset consists of cloud and weather information compiled from both
conventional surface and upper-air reports and satellite data. Observed clouds
are placed within one of four floating layers, with the first layer defined as
the highest. The analysis data is on a 512x512 grid and includes data for both
hemispheres, eight times a day on each synoptic hour. Each hemisphere is
divided into 60 boxes (64x64 grid points in each) on the eighth mesh grid.
Information for a particular grid point may include either 0, 1, 2, 3, or 4
layers of cloud information, depending on observed conditions.

Obtain this data from AFCCC:

Obtain this data from NCDC:
Related URL
Description: Link to view this dataset's metadata in FGDC format.
Geographic Coverage
Spatial coordinates   
  N: 90.0   S: -90.0   E: 180.0   W: -180.0

Data Set Citation
Dataset Originator/Creator: Collected by Det 7 AFWA, Tinker AFB OK, and decoded by the Air Force Weather Agency at Offutt AFB NE
Dataset Title: Real Time Nephanalysis (RTNEPH) Cloud Layer Information from USAF Combat Climatology Center (AFCCC)
Online Resource:
Temporal Coverage
Start Date: 1984-01-01
Data Resolution
Temporal Resolution: Synoptic Hours
Access Constraints Access through AFCCC is limited to DoD agencies and their contractors. All
other requests are filled through the National Climatic Data Center in
Asheville N.C.
Data Set Progress
Originating Center
Data Center
Air Force Combat Climatology Center, U.S. Air Force, U.S. Department of Defense Supplemental Info
Data Center URL:
Dataset ID: RTBXN > RTNEPH Box-Time file, Northern Hemisphere
Dataset ID: RTBXS > RTNEPH Box_Time file, Southern Hemisphere
Dataset ID: RTHHN > RTNEPH Hemispheric Histogram, Northern Hemisphere
Dataset ID: RTHHS > RTNEPH Hemispheric Histogram, Southern Hemisphere
Dataset ID: RTTHN > RTNEPH LMHT/A, Northern Hemisphere
Dataset ID: RTTHX > RTNEPH LMHT/A, Southern Hemisphere

Data Center Personnel
Phone: (828) 271-4291
Contact Address:
Air Force Combat Climatology Center
151 Patton Ave. Rm 120
City: Asheville
Province or State: NC
Postal Code: 28801-5002
Country: USA
Contact Address:
Air Force Combat Climatology Center
Federal Building, Room 120
151 Patton Ave
City: Asheville
Province or State: NC
Postal Code: 29901-5002
Country: USA
Zamiska,A , RTNEPH USAFETAC Climatic Database Users Handbook No1,

Kiess, Raymond, AFGWC Automated Real_Time Cloud Analysis Model,
Extended Metadata Properties
(Click to view more)

Creation and Review Dates
Last DIF Revision Date: 2004-08-26
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Link to Web Site