US-Manitou Experimental Forest Observatory

Water vapor isotope experiment was conducted at Manitou Experimental Forest Observatory site, Colorado, US (39.08 N, −105.07 W) from May 2011 to Sep 2011.


Data download: NetCDF

Variable definitions

Description

Unit

Equipment

Height (m)

Additional description

Date time

UTC

Water mixing ratio

ppmv

Picarro L2120-i

27.1

Water vapour isotopic ratio (18O)

per mil

Picarro L2120-i

27.1

Normalized to V-SMOW; Humidity dependence correlation: Non-linear regression of water vapour concentration

Standard deviation of 18O

per mil

Picarro L2120-i

27.1

Hourly

Water vapour isotopic ratio (D)

per mil

Picarro L2120-i

27.1

Normalized to V-SMOW; Humidity dependence correlation: Non-linear regression of water vapour concentration

Standard deviation of D

per mil

Picarro L2120-i

27.1

Hourly

Air temperature

Celsius (°C)

HMP-35D

21.5

Relative humidity

<=100%, dimensionless

HMP-35D

21.5

Air pressure

Pa

PTB-101B

12

Precipitation

mm

Tipping bucket

Net radiation

W/m2

REBS Q-7.1

25.5

Wind speed

m/s

CSAT3

21.5

Wind direction

degree (°C)

CSAT3

21.5

Air temperature

Celsius (°C)

2

ERA5

Relative humidity

<=100%

2

ERA5

Air pressure

Pa

2

ERA5

Precipitation

mm

ERA5

Net radiation

W/m2

ERA5

Wind speed

m/s

ERA5

Wind direction

°C

10

ERA5

Reference papers

         Berkelhammer, M., Noone, D., Wong, T.E., Burns, S.P., Knowles, J.F., Kaushik, A., Blanken, P.D. and Williams, M.W., 2016. Convergent approaches to determine an ecosystem’s transpiration fraction. Global Biogeochemical Cycles.

Site contact

          Name: Max Berkelhammer and David Noone

          Email: berkelha@uic.edu 
(Max Berkelhammer) and dcn@coas.oregonstate.edu (David Noone)