Microbarograph - ESRL Hi-Res Microbarograph, Umatilla - Raw Data

**Overview**

High-precision barometers (Paroscientific 6000-16B-IS) are combined with Nishiyama-Bedard Quad Disk pressure probes, measuring pressure (mb) at the surface, nominally 2 m above ground level. Data are sampled at 20 Hz for potential studies of turbulence. The sensors' high accuracy makes them useful for determining horizontal pressure gradients and their relation to wind ramp events, as well as the temporal variability of pressure associated with mountain wakes and waves.

**Note different ASCII file formats for Goldendale (z04) and Walla Walla (z09) sites.**

**Data Details**

**ASCII Format**

* Field 1: DataloggerID
* Field 2: Year
* Field 3: Julian Day
* Field 4: Hour and Min (UTC)
* Field 5: Seconds Decimal (UTC)
* Field 6: GPS Lock Identifier (A = Locked Signal; V=Insufficient Satellite Coverage)
* Field 7: GPS Clock String (UTC)
* Field 8: Pressure (mb)

Example of data file:

101,2016,243,000,0.04,0001A,2016/08/29 23:59:58.150,913.314500
101,2016,243,000,0.09,0001A,2016/08/29 23:59:58.200,913.315652
101,2016,243,000,0.14,0001A,2016/08/29 23:59:58.250,913.313351
101,2016,243,000,0.19,0001A,2016/08/29 23:59:58.300,913.315626
101,2016,243,000,0.24,0001A,2016/08/29 23:59:58.350,913.315255
101,2016,243,000,0.29,0001A,2016/08/29 23:59:58.400,913.315267
101,2016,243,000,0.34,0001A,2016/08/29 23:59:58.450,913.315430
101,2016,243,000,0.39,0001A,2016/08/29 23:59:58.500,913.312698
101,2016,243,000,0.44,0001A,2016/08/29 23:59:58.550,913.315139
101,2016,243,000,0.49,0001A,2016/08/29 23:59:58.600,913.314793
101,2016,243,000,0.54,0001A,2016/08/29 23:59:58.650,913.317083
101,2016,243,000,0.59,0001A,2016/08/29 23:59:58.700,913.316959
101,2016,243,000,0.64,0001A,2016/08/29 23:59:58.750,913.312730
101,2016,243,000,0.69,0001A,2016/08/29 23:59:58.800,913.315043
101,2016,243,000,0.74,0001A,2016/08/29 23:59:58.850,913.318476
101,2016,243,000,0.79,0001A,2016/08/29 23:59:58.900,913.312417
101,2016,243,000,0.84,0001A,2016/08/29 23:59:58.950,913.317606
101,2016,243,000,0.89,0001A,2016/08/29 23:59:59.000,913.316681
101,2016,243,000,0.94,0001A,2016/08/29 23:59:59.050,913.314978
101,2016,243,000,0.99,0001A,2016/08/29 23:59:59.100,913.318996

**Goldendale (z04) and Walla Walla (z09) ASCII Format**

* Field 1: GPS Clock String (UTC)
* Field 2: Pressure (mb)

Example of data file:

2016/08/29 23:59:58.150,913.314500
2016/08/29 23:59:58.200,913.315652
2016/08/29 23:59:58.250,913.313351
2016/08/29 23:59:58.300,913.315626
2016/08/29 23:59:58.350,913.315255
2016/08/29 23:59:58.400,913.315267
2016/08/29 23:59:58.450,913.315430
2016/08/29 23:59:58.500,913.312698
2016/08/29 23:59:58.550,913.315139
2016/08/29 23:59:58.600,913.314793
2016/08/29 23:59:58.650,913.317083
2016/08/29 23:59:58.700,913.316959
2016/08/29 23:59:58.750,913.312730
2016/08/29 23:59:58.800,913.315043
2016/08/29 23:59:58.850,913.318476
2016/08/29 23:59:58.900,913.312417
2016/08/29 23:59:58.950,913.317606
2016/08/29 23:59:59.000,913.316681
2016/08/29 23:59:59.050,913.314978
2016/08/29 23:59:59.100,913.318996

**Data Quality**

No special data quality control is needed.

**Uncertainty**

* 0.0001% Resolution
* ±0.08 hPa Accuracy
* Stability better than 0.1 hPa per year.