nyrad35
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| nyrad35 [2026/06/01 07:53] – created kerstin | nyrad35 [2026/06/01 09:41] (current) – kerstin | ||
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| - | ====== NYRAD35 35 GHz cloud rada ====== | + | ====== NYRAD35 35 GHz cloud radar ====== |
| //Mentor: [[https:// | //Mentor: [[https:// | ||
| - | {{: | + | {{: |
| NYRAD35 ([[http:// | NYRAD35 ([[http:// | ||
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| ===== Principle ===== | ===== Principle ===== | ||
| - | NYRAD35 is a dual-polarization simultaneous transmission and simultaneous reception (STSR; also referred to as hybrid-mode, | + | The NYRAD35 is a dual-polarization simultaneous transmission and simultaneous reception (STSR; also referred to as hybrid-mode, |
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| ===== Deployment ===== | ===== Deployment ===== | ||
| ^ Period | ^ Period | ||
| - | | | + | | |
| - | | | + | | |
| - | | 23/03/2018 - 06/03/2019 | [[http:// | + | |
| - | | 10/06/2016 - 26/ | + | |
| - | | 16/10/2015 - 23/ | + | |
| ===== Specifications ===== | ===== Specifications ===== | ||
| ^ Parameter | ^ Parameter | ||
| - | | Frequency | 94 GHz ± 100 MHz | + | | Frequency | 35 GHz | corresponds to wavelength of 8.6 mm; bandwidth up to ± 100 MHz | |
| - | |IF Range | 350 kHz to 3 MHz | | | + | |IF Range | 0.3 to 3.7 MHz | | |
| - | | Transmitter Power | ~ 2 W | solid state amplifier | + | | Transmitter Power | 15 W | solid state amplifier |
| - | | Antenna gain | 50.8 dB | | | + | | Antenna gain | 48.0 dB | | |
| - | | Beam Width | 0.53° FWHM | | | + | | Beam Width | 0.8° FWHM | | |
| - | | Polarisation | V | | | + | | Polarisation | Dual-polarization (STSR) |
| - | | System Noise Figure | 3 dB | | + | | Dynamic Range | -43 dBZe to +30 dBZ | valid for 5 km distance, 30 m resolution, and 10 s sampling time | |
| - | | Dynamic Range | -54 dBZe to +20 DBZe at 1km height, -45 dBZe to +20 dBZe at 3 km height, -36 dBZe to +20 dBZe at 10 km height | | | + | | Ranging | 50 m to 12 km | maximum |
| - | | Ranging | 50 m to 18 km | | + | | Calibration | Transmitter power monitoring, Receiver Dicke switch (for radar and passive channel), Hot/Cold absolute receiver calibration | Accuracy |
| - | | Calibration | Transmitter power monitoring, Receiver Dicke switch (for radar and DD channels), Hot/Cold absolute receiver calibration | Accuracy | + | | A/D Sampling Rate | 11.45 MHz | | |
| - | | A/D Sampling Rate | 8.2 MHz | | | + | | Profile Sampling Rate | ≥1 s | adjustable |
| - | | Profile Sampling Rate | 0.2 s to 30 s | | | + | | Vertical Resolution | 4 m to 30 m | 4 m in a limited distance range | |
| - | | Vertical Resolution | 1 m to 100 m | (user selectable) | + | | Doppler Resolution | ± 4 cm/s | or better |
| - | | Doppler Resolution | ± 1.5 cm/s | | | + | | Doppler Range | ± 10 m/s max. | | |
| - | | Doppler Range | ± 18 m/s max. | | | + | | Chirp Variations | 3 typical | 5 possible, re-programmable | |
| - | | Chirp Variations | 4 typical | 10 possible, re-programmable | | + | | Passive Channels | 31.4 GHz | for integral liquid water (LWP) detection (200 MHz BW) | |
| - | | Passive Channels | 89 GHz | for integral liquid water (LWP) detection (2 GHz BW) | + | | Passive Channel Noise Figure | 3.7 dB | | |
| - | | Data Products | Reflectivity, | + | | Data Products | Raw spectra, Spectral polarimetric parameters, |
| - | | Data Formats | proprietary binary, netCDF (conformity with CF convention), ASCII (only moment profiles) | | | + | | Data Formats | proprietary binary, netCDF (conformity with CF convention) | | |
| - | | Rain / Snow Mitigation System | Super blower | + | | Rain/Snow/Dew Mitigation System | Strong dew blower (4000 m3/h ), radomes with hydrophobic coating |
| - | | Weight | Radar main body: 100 kg, Table: | + | | Weight | Radar main body: 160 kg, Table: |
| - | | Power Consumption | 220 V AC, 50-60 Hz, Radar: 400 W, Blowers: 1000 W | | | + | | Maximum |
| + | | Elevation Scanning | zenith mode, 30° low-elevation mode | azimuth direction fixed to 27° (along north-north-east to south-south-west direction); elevation angle adjustable; alternating continuous zenith/ | ||
| | Manufacturer | [[http:// | | Manufacturer | [[http:// | ||
| ===== References ===== | ===== References ===== | ||
| - | Chellini, G., R. Gierens, K. Ebell, T. Kiszler, P. Krobot, A. Myagkov, V. Schemann, and S. Kneifel, 2023, Low-level mixed-phase clouds at the high Arctic site of Ny-Ålesund: | + | Chellini, G., R. Gierens, K. Ebell, T. Kiszler, P. Krobot, A. Myagkov, V. Schemann, and S. Kneifel, 2023: Low-level mixed-phase clouds at the high Arctic site of Ny-Ålesund: |
| + | |||
| + | Chellini, G., R. Gierens, and S. Kneifel, 2022: Ice aggregation in low-level mixed-phase clouds at a high Arctic site: Enhanced by dendritic growth and absent close to the melting level. Journal of Geophysical Research: Atmospheres, | ||
nyrad35.1780300388.txt.gz · Last modified: 2026/06/01 07:53 by kerstin