Metadata Updated: August 1, 2018

The EDOP provides vertically profiled reflectivity and Doppler velocity at aircraft nadir along the flight track. The ER-2 Doppler radar (EDOP) is an X-band (9.6 GHz) Doppler radar mounted in the nose of the ER-2 aircraft. The instrument has two fixed antennas, one pointing at nadir and the second pointing approximately 33 degree ahead of nadir. The beam width of the antenna is 3 degree in the vertical and horizontal directions which, for a 20 km altitude, yields a nadir footprint at the surface of 1 km. Each Antenna measures the doppler velocity, doppler spectral width, and reflectivity factor. Doppler velocities provide a measure of the pulse volume-weighted hydrometer motion (hydrometer fallspeed + air motion.) Vertical air motion can be calculated from the nadir beam by removing the fallspeed contribution with an approximation. Along-track horizontal air motion can be calculated by combining doppler wind speeds from forward and nadir beams. The linear depolarization ratio (the ratio of the cross-polar to the co-polar reflectivites) can be measured along forward beam. EDOP is a coherent Doppler radar system at 9.6 GHz. EDOP provides measurements from a forward pointing beam that is used in combination with the nadir beam for estimating the along-track winds.

Access & Use Information

Public: This dataset is intended for public access and use. License: U.S. Government Work

Downloads & Resources


Metadata Created Date August 1, 2018
Metadata Updated Date August 1, 2018
Data Update Frequency irregular

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date August 1, 2018
Publisher GHRC
Unique Identifier C1802-GHRC__1
Maintainer Email
Id {$oid: 55942a76c63a7fe59b4972b2}
Public Access Level public
Data Update Frequency irregular
Bureau Code 026:00
Metadata Context
Schema Version
Catalog Describedby
Harvest Object Id 0f529685-c57f-4b5d-9e2f-7bc6225a29f1
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2006-04-07T00:00:00.000Z
Homepage URL
Language en-US
Metadata Type geospatial
Data Last Modified 2011-07-07T14:04:17.000Z
Program Code 026:001
Publisher Hierarchy U.S. Government > National Aeronautics and Space Administration > GHRC
Source Datajson Identifier True
Source Hash 3d41a9c2d4e98626004c7d0c45ceedff5090e7c0
Source Schema Version 1.1
Spatial -115.0 4.0 -62.0 32.0
Temporal 2005-06-28T09:44:00Z/2005-07-28T18:46:00Z
Category geospatial

Didn't find what you're looking for? Suggest a dataset here.