Download Page
This is the Download Page for the Central Valley PBL Height dataset. Yearly and monthly subsets are available for download from each station in .txt format. Each file contains 45-minute interval estimations of the PBLH and up to three mixing layer heights (MLH) per interval. MLH’s are ordered by magnitude of the vertical aerosol backscatter gradient. Additionally, each timestep includes flags for data quality. For definitions of the flag codes and a full chart of data availability, see the corresponding drop-downs below.
| Station | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|
| Bakersfield | Oct 14 – Dec 30 | Full Year | Jan 1-5, Nov 1 – Dec 30 | Full Year | Full Year | Jan 1 – Nov 23 |
| Fresno | Oct 14 – Dec 30 | Full Year | None | Sep 1 – Dec 31 | Full Year | Jan 1 – May 10, Oct 12 – Dec 31 |
| Riverside | Oct 14 – Dec 30* | Jan 1 – Oct 28* | None | Jun 1 – Dec 31 | Full Year | Jan 1 – Jun 15 * |
| Visalia | None | None | Jan 11 – Jan 28, Nov 1 – Dec 31 | Full Year | Full Year | Jan 1 – Aug 8 |
| Yuba City | None | Sept 1 – Dec 31 | Full Year | Jan 1 – Sept 13 | Full Year | Full Year |
*Occasional Missing Days
| Code | Flag Description |
|---|---|
| M | Missing data during time interval |
| M1 | Bad signal; negative aerosol backscatter |
| M2 | No signal; all noise |
| M3 | Ambiguous signal; signal is too weak to overcome artificial gradient caused by incomplete overlap; or, the PBLH is too low to rise above the artificial gradient |
| M4 | Signal is too weak to detect a significant guess |
| C | Low cloud |
| C1 | Guess is above cloud layer; potentially cloud-topped boundary layer; potentially misidentified PBLH given weak below-cloud aerosols |
| C2 | Weak signal beneath cloud |
| P | Precipitation (can potentially erroneously flag extreme aerosol load) |
| A1 | Clear-sky timestep after clouds or precip; potential uncertainty after cloudy conditions |
| A2 | Clear-sky timestep after large jump; potential uncertainty after discontinuity |
| S | Strong positive backscatter gradient beneath guess; potentially a smoke layer |
| L | Large upward jump |
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