E-PROFILE
CAPO_GRANITOLA CHM15k Rayleigh
0-20008-0-CGR_A · ITALY · 37.571, 12.660 · 5 m
30 d stale
Median C_L 9.17e+11
Spread 63%
Drift 15 d +28.2%
i

Data availability, cloud cover & calibration — per day; click a day to open that night in the daily panel

Status Pass Warning Error No data Cloud cover 0 4 8 octas Calibration calibrated no scene no night atmosphere retrieval instrument no data
MEDIAN C_L (RAYLEIGH)
9.17e+11
98 calibrated nights
SPREAD (P10-P90)
63%
6.38e+11 … 1.213e+12
15-DAY DRIFT
+28.2%
vs the preceding 45 d
LAST VALID
30 d ago
2026-07-25

Rayleigh — calibration constant over time 49% success · 98/200 · median 9.17e+11

Daily calibration

Time–height & profile

Rayleigh 49% success · 98/200 · median 9.17e+11 · rel. unc 6% · click a point to open that night

All Rayleigh calibrations (200) — click a date to open that night in the daily panel, click a flag for its meaning

DateFlagC_LUncertaintyExtraMessage
20260727 -1.0 Not a clear night Not a clear night
20260726 -1.0 Not a clear night Not a clear night
20260725 1.0 Successful 1.307e+12 5.66e+10 3182–4141 m Successful (method err: 9.4%, sensitivity 2σ: 4.3%)
20260724 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20260723 -1.0 Not a clear night Not a clear night
20260720 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20260719 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20260718 -1.0 Not a clear night Not a clear night
20260717 -1.0 Not a clear night Not a clear night
20260716 -1.0 Not a clear night Not a clear night
20260715 -1.0 Not a clear night Not a clear night
20260714 -1.0 Not a clear night Not a clear night
20260713 1.0 Successful 9.282e+11 8.80e+10 5100–6538 m Successful (method err: 12.7%, sensitivity 2σ: 9.5%)
20260712 -1.0 Not a clear night Not a clear night
20260711 1.0 Successful 1.08e+12 5.37e+10 3422–6299 m Successful (method err: 8.9%, sensitivity 2σ: 5.0%)
20260710 1.0 Successful 9.52e+11 6.79e+10 4860–6778 m Successful (method err: 0.1%, sensitivity 2σ: 7.1%)
20260709 1.0 Successful 1.046e+12 8.40e+10 3422–6299 m Successful (method err: 10.9%, sensitivity 2σ: 8.0%)
20260708 1.0 Successful 1.052e+12 7.18e+10 3661–4620 m Successful (method err: 12.0%, sensitivity 2σ: 6.8%)
20260707 1.0 Successful 9.142e+11 5.59e+10 5340–6299 m Successful (method err: 2.0%, sensitivity 2σ: 6.1%)
20260706 1.0 Successful 1.257e+12 2.49e+10 1743–5579 m Successful (method err: 8.6%, sensitivity 2σ: 2.0%)
20260705 1.0 Successful 9.391e+11 6.46e+10 4381–5340 m Successful (method err: 6.0%, sensitivity 2σ: 6.9%)
20260704 0.5 Partial success 1.223e+12 1.01e+11 4620–6059 m Successful (method err: 4.8%, sensitivity 2σ: 8.3%)
20260703 -1.0 Not a clear night Not a clear night
20260702 -1.0 Not a clear night Not a clear night
20260701 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20260630 1.0 Successful 9.225e+11 8.71e+10 3661–7498 m Successful (method err: 12.3%, sensitivity 2σ: 9.4%)
20260629 -3.0 Method disagreement Method disagreement: 16.0%
20260628 1.0 Successful 7.927e+11 5.91e+10 4860–6778 m Successful (method err: 1.8%, sensitivity 2σ: 7.5%)
20260627 -3.0 Method disagreement Method disagreement: 15.8%
20260626 1.0 Successful 7.253e+11 7.43e+10 3422–7258 m Successful (method err: 3.5%, sensitivity 2σ: 10.2%)
20260625 1.0 Successful 7.459e+11 7.45e+10 4381–7258 m Successful (method err: 8.7%, sensitivity 2σ: 10.0%)
20260623 1.0 Successful 7.574e+11 5.22e+10 3901–7737 m Successful (method err: 7.1%, sensitivity 2σ: 6.9%)
20260622 -1.0 Not a clear night Not a clear night
20260621 1.0 Successful 6.475e+11 4.09e+10 2942–5819 m Successful (method err: 3.7%, sensitivity 2σ: 6.3%)
20260620 1.0 Successful 6.469e+11 4.67e+10 2702–6059 m Successful (method err: 9.4%, sensitivity 2σ: 7.2%)
20260619 1.0 Successful 7.569e+11 4.04e+10 2942–4381 m Successful (method err: 9.1%, sensitivity 2σ: 5.3%)
20260618 1.0 Successful 7.664e+11 9.14e+10 3901–7737 m Successful (method err: 12.2%, sensitivity 2σ: 11.9%)
20250830 -1.0 Not a clear night Not a clear night
20250829 -1.0 Not a clear night Not a clear night
20250828 -1.0 Not a clear night Not a clear night
20250827 -1.0 Not a clear night Not a clear night
20250826 -1.0 Not a clear night Not a clear night
20250825 -9.0 Another layer with lower signal Another layer with lower signal found (signal ratio 2.6)
20250824 1.0 Successful 1.236e+12 8.28e+10 1983–2463 m Successful (method err: 5.1%, sensitivity 2σ: 6.7%)
20250823 -3.0 Method disagreement Method disagreement: 40.0%
20250822 -1.0 Not a clear night Not a clear night
20250821 -1.0 Not a clear night Not a clear night
20250820 -1.0 Not a clear night Not a clear night
20250819 1.0 Successful 1.274e+12 1.23e+11 4381–7258 m Successful (method err: 10.7%, sensitivity 2σ: 9.6%)
20250818 -1.0 Not a clear night Not a clear night
20250813 0.5 Partial success 1.193e+12 1.10e+11 4381–7258 m Successful (method err: 11.6%, sensitivity 2σ: 9.2%)
20250812 1.0 Successful 1.322e+12 1.03e+11 4860–6778 m Successful (method err: 5.4%, sensitivity 2σ: 7.8%)
20250811 0.0 No data No profiles in nighttime window
20250807 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20250806 1.0 Successful 1.077e+12 3.66e+10 3182–7018 m Successful (method err: 14.1%, sensitivity 2σ: 3.4%)
20250805 0.5 Partial success 1.111e+12 5.60e+10 2223–6059 m Successful (method err: 3.0%, sensitivity 2σ: 5.0%)
20250804 0.5 Partial success 1.046e+12 1.14e+11 3661–7498 m Successful (method err: 2.0%, sensitivity 2σ: 10.9%)
20250803 1.0 Successful 1.147e+12 1.02e+11 3661–7498 m Successful (method err: 6.2%, sensitivity 2σ: 8.9%)
20250802 -1.0 Not a clear night Not a clear night
20250731 1.0 Successful 1.034e+12 4.89e+10 3661–7498 m Successful (method err: 2.6%, sensitivity 2σ: 4.7%)
20250730 0.0 No data No profiles in nighttime window
20250722 -1.0 Not a clear night Not a clear night
20250721 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20250720 -1.0 Not a clear night Not a clear night
20250719 -1.0 Not a clear night Not a clear night
20250718 -1.0 Not a clear night Not a clear night
20250717 1.0 Successful 6.4e+11 1.07e+11 3182–5579 m Successful (method err: 11.6%, sensitivity 2σ: 16.7%)
20250716 1.0 Successful 7.251e+11 4.47e+10 4620–6059 m Successful (method err: 14.8%, sensitivity 2σ: 6.2%)
20250715 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20250714 1.0 Successful 7.355e+11 1.86e+11 5100–6059 m Successful (method err: 0.9%, sensitivity 2σ: 25.3%)
20250713 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20250712 1.0 Successful 8.787e+11 3.61e+10 3182–7018 m Successful (method err: 3.3%, sensitivity 2σ: 4.1%)
20250711 1.0 Successful 9.412e+11 5.19e+10 3901–7737 m Successful (method err: 11.8%, sensitivity 2σ: 5.5%)
20250710 -3.0 Method disagreement Method disagreement: 15.7%
20250709 1.0 Successful 9.904e+11 1.11e+11 3182–6538 m Successful (method err: 0.3%, sensitivity 2σ: 11.2%)
20250708 -1.0 Not a clear night Not a clear night
20250707 1.0 Successful 9.216e+11 7.01e+10 4620–6059 m Successful (method err: 10.3%, sensitivity 2σ: 7.6%)
20250706 1.0 Successful 1.12e+12 5.97e+10 3422–7258 m Successful (method err: 1.8%, sensitivity 2σ: 5.3%)
20250705 1.0 Successful 1.005e+12 5.92e+10 3661–7498 m Successful (method err: 0.7%, sensitivity 2σ: 5.9%)
20250704 1.0 Successful 9.447e+11 7.73e+10 3422–7258 m Successful (method err: 13.4%, sensitivity 2σ: 8.2%)
20250703 1.0 Successful 8.53e+11 6.65e+10 3661–7018 m Successful (method err: 8.0%, sensitivity 2σ: 7.8%)
20250702 1.0 Successful 8.39e+11 5.19e+10 3661–7018 m Successful (method err: 14.9%, sensitivity 2σ: 6.2%)
20250701 -3.0 Method disagreement Method disagreement: 15.6%
20250630 1.0 Successful 9.263e+11 6.92e+10 3901–7737 m Successful (method err: 13.0%, sensitivity 2σ: 7.5%)
20250629 1.0 Successful 9.812e+11 8.35e+10 2702–4141 m Successful (method err: 13.2%, sensitivity 2σ: 8.5%)
20250627 1.0 Successful 1.035e+12 6.01e+10 2942–6778 m Successful (method err: 14.7%, sensitivity 2σ: 5.8%)
20250626 1.0 Successful 1.014e+12 3.71e+10 3901–7737 m Successful (method err: 0.7%, sensitivity 2σ: 3.7%)
20250625 1.0 Successful 1.209e+12 6.63e+10 2463–6299 m Successful (method err: 3.0%, sensitivity 2σ: 5.5%)
20250624 1.0 Successful 1.167e+12 4.08e+10 4141–6059 m Successful (method err: 8.3%, sensitivity 2σ: 3.5%)
20250623 -1.0 Not a clear night Not a clear night
20250622 1.0 Successful 1.061e+12 5.86e+10 3661–7498 m Successful (method err: 9.2%, sensitivity 2σ: 5.5%)
20250621 -3.0 Method disagreement Method disagreement: 19.2%
20250620 -1.0 Not a clear night Not a clear night
20250619 -1.0 Not a clear night Not a clear night
20250618 -3.0 Method disagreement Method disagreement: 16.6%
20250617 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20250616 1.0 Successful 1.145e+12 1.15e+11 5579–6059 m Successful (method err: 0.4%, sensitivity 2σ: 10.1%)
20250615 1.0 Successful 9.986e+11 7.88e+10 3901–7258 m Successful (method err: 1.1%, sensitivity 2σ: 7.9%)
20250614 1.0 Successful 1.098e+12 9.53e+10 3661–7498 m Successful (method err: 0.9%, sensitivity 2σ: 8.7%)
20250613 1.0 Successful 9.637e+11 1.57e+11 4620–7018 m Successful (method err: 8.9%, sensitivity 2σ: 16.3%)
20250612 1.0 Successful 9.197e+11 7.60e+10 3422–6778 m Successful (method err: 6.9%, sensitivity 2σ: 8.3%)
20250611 1.0 Successful 6.846e+11 3.97e+10 3182–7018 m Successful (method err: 2.0%, sensitivity 2σ: 5.8%)
20250610 -1.0 Not a clear night Not a clear night
20250609 1.0 Successful 5.31e+11 5.08e+10 4860–6299 m Successful (method err: 8.1%, sensitivity 2σ: 9.6%)
20250608 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20250607 1.0 Successful 8.445e+11 2.87e+11 5340–6299 m Successful (method err: 11.0%, sensitivity 2σ: 34.0%)
20250606 0.5 Partial success 1.304e+12 9.08e+10 4620–6059 m Successful (method err: 8.4%, sensitivity 2σ: 7.0%)
20250605 1.0 Successful 6.66e+11 5.17e+10 4620–6059 m Successful (method err: 10.4%, sensitivity 2σ: 7.8%)
20250604 1.0 Successful 7.53e+11 3.47e+10 2223–6059 m Successful (method err: 0.5%, sensitivity 2σ: 4.6%)
20250603 1.0 Successful 6.734e+11 2.51e+10 3901–7258 m Successful (method err: 3.1%, sensitivity 2σ: 3.7%)
20250602 -1.0 Not a clear night Not a clear night
20250601 1.0 Successful 7.342e+11 1.93e+10 2223–6059 m Successful (method err: 3.0%, sensitivity 2σ: 2.6%)
20250531 0.5 Partial success 6.874e+11 2.46e+10 2223–3661 m Successful (method err: 2.9%, sensitivity 2σ: 3.6%)
20250530 0.5 Partial success 5.782e+11 2.47e+10 3422–6299 m Successful (method err: 1.3%, sensitivity 2σ: 4.3%)
20250529 0.5 Partial success 7.466e+11 3.71e+10 1983–5819 m Successful (method err: 2.8%, sensitivity 2σ: 5.0%)
20250528 1.0 Successful 7.725e+11 5.12e+10 2942–6299 m Successful (method err: 4.0%, sensitivity 2σ: 6.6%)
20250527 0.5 Partial success 6.867e+11 3.22e+10 1743–2702 m Successful (method err: 0.4%, sensitivity 2σ: 4.7%)
20250526 1.0 Successful 7.429e+11 4.54e+10 2463–6299 m Successful (method err: 11.3%, sensitivity 2σ: 6.1%)
20250525 -1.0 Not a clear night Not a clear night
20250524 -1.0 Not a clear night Not a clear night
20250523 -1.0 Not a clear night Not a clear night
20250522 -1.0 Not a clear night Not a clear night
20250521 -1.0 Not a clear night Not a clear night
20250520 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20250519 0.5 Partial success 8.2e+11 8.01e+10 4860–6299 m Successful (method err: 4.2%, sensitivity 2σ: 9.8%)
20250518 1.0 Successful 9.615e+11 6.78e+10 3182–5100 m Successful (method err: 4.2%, sensitivity 2σ: 7.1%)
20250517 -1.0 Not a clear night Not a clear night
20250516 -1.0 Not a clear night Not a clear night
20250515 -1.0 Not a clear night Not a clear night
20250514 0.5 Partial success 1.141e+12 3.70e+10 2702–3182 m Successful (method err: 6.4%, sensitivity 2σ: 3.2%)
20250513 -1.0 Not a clear night Not a clear night
20250512 0.5 Partial success 1.351e+12 1.32e+11 3901–6778 m Successful (method err: 10.8%, sensitivity 2σ: 9.8%)
20250511 -1.0 Not a clear night Not a clear night
20250510 -3.0 Method disagreement Method disagreement: 19.2%
20250509 -1.0 Not a clear night Not a clear night
20250508 -1.0 Not a clear night Not a clear night
20250507 0.5 Partial success 1.046e+12 6.39e+10 4141–4620 m Successful (method err: 6.1%, sensitivity 2σ: 6.1%)
20250506 0.5 Partial success 1.247e+12 7.21e+10 5340–6299 m Successful (method err: 7.8%, sensitivity 2σ: 5.8%)
20250505 -1.0 Not a clear night Not a clear night
20250504 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20250503 0.5 Partial success 1.011e+12 2.23e+10 1983–5819 m Successful (method err: 1.6%, sensitivity 2σ: 2.2%)
20250502 1.0 Successful 9.666e+11 1.51e+10 1743–5579 m Successful (method err: 2.8%, sensitivity 2σ: 1.6%)
20250501 1.0 Successful 9.851e+11 2.23e+10 2702–6538 m Successful (method err: 1.6%, sensitivity 2σ: 2.3%)
20250430 -2.0 Signal not proportional to molecular No molecular window passed the validity gates
20250429 -1.0 Not a clear night Not a clear night
20250428 -1.0 Not a clear night Not a clear night
20250427 0.5 Partial success 7.262e+11 2.12e+10 1743–3661 m Successful (method err: 2.0%, sensitivity 2σ: 2.9%)
20250426 -1.0 Not a clear night Not a clear night
20250425 1.0 Successful 6.157e+11 6.59e+10 2223–6059 m Successful (method err: 1.1%, sensitivity 2σ: 10.7%)
20250424 -1.0 Not a clear night Not a clear night
20250423 -1.0 Not a clear night Not a clear night
20250422 -1.0 Not a clear night Not a clear night
20250421 0.5 Partial success 6.724e+11 4.31e+10 2223–2702 m Successful (method err: 2.0%, sensitivity 2σ: 6.4%)
20250420 0.5 Partial success 6.14e+11 2.13e+10 2223–3661 m Successful (method err: 2.4%, sensitivity 2σ: 3.5%)
20250419 0.5 Partial success 5.884e+11 3.34e+10 3661–7498 m Successful (method err: 11.5%, sensitivity 2σ: 5.7%)
20250418 -1.0 Not a clear night Not a clear night
20250417 -1.0 Not a clear night Not a clear night
20250415 -1.0 Not a clear night Not a clear night
20250414 -1.0 Not a clear night Not a clear night
20250413 -1.0 Not a clear night Not a clear night
20250412 0.5 Partial success 1.005e+12 4.13e+10 2463–6299 m Successful (method err: 6.3%, sensitivity 2σ: 4.1%)
20250411 1.0 Successful 1.021e+12 1.63e+10 2223–6059 m Successful (method err: 2.6%, sensitivity 2σ: 1.6%)
20250410 -1.0 Not a clear night Not a clear night
20250409 0.5 Partial success 1.246e+12 4.28e+10 2942–6778 m Successful (method err: 6.3%, sensitivity 2σ: 3.4%)
20250408 1.0 Successful 8.81e+11 3.52e+10 3422–6778 m Successful (method err: 0.3%, sensitivity 2σ: 4.0%)
20250407 0.5 Partial success 8.732e+11 4.64e+10 3182–7018 m Successful (method err: 8.8%, sensitivity 2σ: 5.3%)
20250406 -1.0 Not a clear night Not a clear night
20250405 0.5 Partial success 8.571e+11 4.24e+10 4620–5579 m Successful (method err: 2.3%, sensitivity 2σ: 4.9%)
20250404 0.5 Partial success 7.728e+11 2.52e+10 3422–7258 m Successful (method err: 1.1%, sensitivity 2σ: 3.3%)
20250403 0.5 Partial success 7.902e+11 2.95e+10 2223–6059 m Successful (method err: 12.7%, sensitivity 2σ: 3.7%)
20250402 -1.0 Not a clear night Not a clear night
20250401 -1.0 Not a clear night Not a clear night
20250331 0.5 Partial success 7.289e+11 3.14e+10 2942–6299 m Successful (method err: 14.5%, sensitivity 2σ: 4.3%)
20250330 -1.0 Not a clear night Not a clear night
20250329 -1.0 Not a clear night Not a clear night
20250328 -1.0 Not a clear night Not a clear night
20250327 0.5 Partial success 5.454e+11 1.76e+10 2463–6299 m Successful (method err: 0.3%, sensitivity 2σ: 3.2%)
20250326 -1.0 Not a clear night Not a clear night
20250325 0.5 Partial success 7.431e+11 8.38e+10 4620–6538 m Successful (method err: 11.5%, sensitivity 2σ: 11.3%)
20250324 -1.0 Not a clear night Not a clear night
20250323 -1.0 Not a clear night Not a clear night
20250322 -1.0 Not a clear night Not a clear night
20250321 0.5 Partial success 7.505e+11 7.69e+10 4860–5819 m Successful (method err: 9.7%, sensitivity 2σ: 10.2%)
20250320 -1.0 Not a clear night Not a clear night
20250319 -1.0 Not a clear night Not a clear night
20250318 -1.0 Not a clear night Not a clear night
20250317 0.5 Partial success 5.228e+11 2.20e+10 3182–6538 m Successful (method err: 3.2%, sensitivity 2σ: 4.2%)
20250316 -1.0 Not a clear night Not a clear night
20250315 0.5 Partial success 5.626e+11 2.52e+11 3422–5340 m Successful (method err: 4.9%, sensitivity 2σ: 44.8%)
20250314 0.5 Partial success 6.489e+11 1.11e+11 4620–7018 m Successful (method err: 9.9%, sensitivity 2σ: 17.1%)
20250313 0.5 Partial success 6.441e+11 3.26e+10 2463–6299 m Successful (method err: 0.9%, sensitivity 2σ: 5.1%)
20250312 -1.0 Not a clear night Not a clear night
20250311 -1.0 Not a clear night Not a clear night
20250310 -1.0 Not a clear night Not a clear night
20250309 0.5 Partial success 6.333e+11 3.69e+10 2942–6778 m Successful (method err: 7.0%, sensitivity 2σ: 5.8%)
20250308 -1.0 Not a clear night Not a clear night
20250307 -1.0 Not a clear night Not a clear night
20250306 1.0 Successful 6.298e+11 4.28e+10 2702–5100 m Successful (method err: 7.8%, sensitivity 2σ: 6.8%)
20250305 -1.0 Not a clear night Not a clear night
20250304 0.0 No data No profiles in nighttime window

Instrument monitoring — daily averages: laser power, window transmission, temperatures

Observation − Background (CAMS) — calibrated backscatter vs CAMS model over the selected window

Observation minus background (CAMS) diagnostic

Cloudnet target classification — 0 days · aerosol / cloud / drizzle / ice / supercooled (ceiloclass, driven by CAMS T)

No Cloudnet target-classification curtains for this stream.

Instrument sensitivity / detection limit — ICAO detection altitude & nighttime noise floor

Instrument sensitivity / detection limit diagnostic