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NASA/GPM Olympex Radar Assets
NASA S-Band Dual-Polarimetric Radar (NPOL)
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NPOL is NASA's premier weather radar. It is one of only two transportable
S-band dual-polarization radars (the other being NCAR's SPOL). When not
being deployed for PMM/GPM field campaigns.
NPOL has a wavelength of 10.65 cm, an operating frequency of 2700-2900 MHz,
variable PRF of 500 and 1000 Hz with a 0.95 degree beam width. NPOL can
operate with both horizontal and vertical polarization in both simultaneous
and alternating modes. The radar has a prime-focus parabolic reflector which
is 8.5 m in diameter and is housed on five sea-tainers. When readied for
deployment, the entire radar and antenna system is stored within the five
seatainers.
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Latest NPOL PPI Imagery
Current Sounding: Current Sounding: 01/14/2016 @ 23 UTC.
Reflectivity |
Velocity |
Differential Reflectivity |
Rain Rate |
Correlation |
Intercept (Nw) |
Mass-Weighted Diameter |
Hydrometer ID |
Latest NPOL RHI Imagery
Current Sounding: Current Sounding: 04/30/2020 @ 15 UTC.
Reflectivity |
Velocity |
Diff. Reflectivity |
Rain Rate |
Correlation |
Intercept (Nw) |
Mass-Weighted Diameter |
Hydrometer ID |
Click each image to zoom
Notes on the Hydrometeor Identfication Images
The HID product is generated using software provided by Colorado State University and is based on the continued work of Dolan et al. (2013). The classifications are:| UC | Unclassified |
| DZ | Drizzle |
| RN | Rain |
| CR | Ice Crystals |
| DS | Dry Snow |
| WS | Wet Snow |
| VI | Vertically-aligned Ice |
| LDG | Low-density Graupel |
| HDG | High-density Graupel |
| HA | Hail |
| BD | Big Drops |
Send questions or suggestions to David B. Wolff
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Web Curator: jianxin.wang@nasa.gov NASA Official: David B. Wolff |