Water vapor isotope vertical profile measurement was conducted from Washington, D.C. to Baltimore, MD, US (38.7259N, -77.5204E) in 8, 12, 17, 18, 19 February 2016.
Data download: Metafile, Dataset
1. Time stamps
Elapsed time in UTC seconds.
2. Data format
Data files are csv formatted.
3. Time zone convention
Time is reported in UTC.
4. Missing data
Missing data is replaced with -99999.
5. Variable definitions
|
Column |
Description |
Unit |
Equipment |
Height (m) |
Additional description |
|
Column 1 |
Time |
UTC |
Garmin GPS/INS |
− |
UTC |
|
Column 2 |
Latitude |
degrees |
Garmin GPS/INS |
− |
− |
|
Column 3 |
Longitude |
degrees |
Garmin GPS/INS |
− |
− |
|
Column 4 |
Altitude |
m/s |
Best Air Turbulence (BAT) Probe |
− |
m |
|
Column 5 |
Wind Speed |
degrees |
BAT probe |
− |
− |
|
Column 6 |
Wind Direction |
m/s |
BAT probe |
− |
− |
|
Column 7 |
Vertical Wind |
m/s |
BAT probe |
− |
− |
|
Column 8 |
Static Pressure |
mbar |
BAT probe |
− |
− |
|
Column 9 |
Ambient Pressure |
Torr |
Picarro G2301-m |
− |
− |
|
Column 10 |
Ambient Temperature |
K |
Fast Ultra-sensitive Thermocouple (FUST) probe |
− |
− |
|
Column 11 |
Ambient Temperature |
K |
microbead thermistor |
− |
* It is suggested that the microbead temperature be used. |
|
Column 12 |
Potential Temperature |
K |
microbead thermistor |
− |
− |
|
Column 13 |
Irradiance |
W/m2 |
LI-COR LI-200R pyranometer |
− |
− |
|
Column 14 |
Airspeed |
m/s |
BAT probe |
− |
− |
|
Column 15 |
Groundspeed |
m/s |
BAT probe |
− |
− |
|
Column 16 |
Heading |
deg |
BAT probe |
− |
− |
|
Column 17 |
Carbon dioxide mole fraction |
ppmv |
Picarro G2301-m |
− |
− |
|
Column 18 |
Methane mole fraction |
ppmv |
Picarro G2301-m |
− |
− |
|
Column 19 |
Water vapor mole fraction |
% |
Picarro G2301-m |
− |
− |
|
Column 20 |
Ozone mole fraction |
ppbv |
2B Technologies Model 202 ozone monitor |
− |
− |
|
Column 21 |
Water vapor mole fraction |
ppmv |
Los Gatos Research (LGR) Triple Water Vapor Isotope Analyzer (TWVIA) (Model: 911-0034) |
− |
− |
|
Column 22 |
δD |
‰ |
LGR TWVIA |
− |
− |
|
Column 23 |
δ18O |
‰ |
LGR TWVIA |
− |
− |
|
Column 24 |
Deuterium excess (d-excess) |
‰ |
LGR TWVIA |
− |
− |
|
Column 25 |
Smoothed (20-second rolling average) δD |
‰ |
LGR TWVIA |
− |
− |
|
Column 26 |
Smoothed (20-second rolling average) δ18O |
‰ |
LGR TWVIA |
− |
− |
|
Column 27 |
Smoothed (20-second rolling average) d-excess |
‰ |
LGR TWVIA |
− |
− |
|
Column 28 |
Total error in δD |
‰ |
LGR TWVIA |
− |
− |
|
Column 29 |
Instrument precision error in δD |
‰ |
LGR TWVIA |
− |
− |
|
Column 30 |
Calibration error in δD |
‰ |
LGR TWVIA |
− |
− |
|
Column 31 |
Total error in δ18O |
‰ |
LGR TWVIA |
− |
− |
|
Column 32 |
Instrument precision error in δ18O |
‰ |
LGR TWVIA |
− |
− |
|
Column 33 |
Calibration error in δ18O |
‰ |
LGR TWVIA |
− |
− |
|
Column 34 |
Total error in d-excess |
‰ |
LGR TWVIA |
− |
− |
|
Column 35 |
Instrument precision error in d-excess |
‰ |
LGR TWVIA |
− |
− |
|
Column 36 |
Calibration error in d-excess |
‰ |
LGR TWVIA |
6. Reference papers
7. Site contact
Name: Lisa Welp and Olivia Salmon
Email: Olivia Salmon (oliviaesalmon@gmail.com) and Lisa Welp (lwelp@purdue.edu)