Vaisala AWS330 - Atmospheric Pressure;Vapor Pressure

Chapter 3 ______________________________________________________ Functional Description
VAISALA_______________________________________________________________________ 23
Atmospheric Pressure/Vapor Pressure
Table 5 Products for Atmospheric Pressure
Reported Parameter Unit Statistic Period Interval Message Tag
Atmospheric pressure hPa Average 1 min 10 sec PAAVG1M
(1
QFE pressure hPa Average 1 min 1 min QFEAVG1M
QFE pressure hPa Average 1 hour 1 hour QFEAVG1H
QFE pressure hPa Minimum 1 hour 1 hour QFEMIN1H
QFE pressure hPa Maximum 1 hour 1 hour QFEMAX1H
QFE pressure hPa Average 1 day 1 day QFEAVG1D
QFE pressure hPa Minimum 1 day 1 day QFEMIN1D
QFE pressure hPa Maximum 1 day 1 day QFEMAX1D
QFF pressure hPa Average 1 min 1 min QFFAVG1M
QFF pressure hPa Average 1 hour 1 hour QFFAVG1H
QFF pressure hPa Minimum 1 hour 1 hour QFFMIN1H
QFF pressure hPa Maximum 1 hour 1 hour QFFMAX1H
QFF pressure hPa Average 1 day 1 day QFFAVG1D
QFF pressure hPa Minimum 1 day 1 day QFFMIN1D
QFF pressure hPa Maximum 1 day 1 day QFFMAX1D
QNH pressure hPa Average 1 min 1 min QNHAVG1M
QNH pressure hPa Average 1 hour 1 hour QNHAVG1H
QNH pressure hPa Minimum 1 hour 1 hour QNHMIN1H
QNH pressure hPa Maximum 1 hour 1 hour QNHMAX1H
QNH pressure hPa Average 1 day 1 day QNHAVG1D
QNH pressure hPa Minimum 1 day 1 day QNHMIN1D
QNH pressure hPa Maximum 1 day 1 day QNHMAX1D
Pressured trend hPa/3h n/a 3 hour 1 min PTREND3H
Pressured tendency
(2
code n/a 3 hour 1 min PTEND3H
Water vapor pressure hPa Average 1 hour 1 hour VPAVG1H
(1
Not directly reported; use QFEAVG1M instead.
(2
Pressure tendency codes; WMO code table 0200.
Pre-Requisite Code Meaning
0 Increasing, then decreasing
1 Increasing, then steady, or increasing, then
increasing more slowly.
2 Increasing steadily or unsteadily.
Atmospheric
pressure now
higher than 3 hours
ago.
3 Decreasing or steady, then increasing; or
increasing, then increasing more rapidly.
0 Increasing, then decreasing.
4 Steady.
Atmospheric
pressure now
same as 3 hours
ago.
5 Decreasing then increasing.
5 Decreasing, then increasing.
6 Decreasing, then steady, or decreasing, then
decreasing more slowly.
7 Decreasing steadily or unsteadily.
Atmospheric
pressure now
lower than 3 hours
ago.
8 Steady or increasing, then decreasing; or
decreasing, then decreasing more rapidly.
See section QFE/QFF Pressure on page 278 for pressure calculation
formulas.