Water vapor isotope experiment was conducted at Mase site (rice), Tsukuba, Japan (36.05N, 140.03E) from Jun 2013 to Dec 2015.
Data download: NetCDF
Variable definitions
|
Description |
Unit |
Equipment |
Height (m) |
Additional description |
|
Date time |
− |
− |
− |
UTC |
|
Water mixing ratio |
ppmv |
Picarro L2120-i |
2 |
− |
|
Water vapour isotopic ratio (18O) |
per mil |
Picarro L2120-i |
2 |
Normalized to V-SMOW; Humidity dependence correlation: No |
|
Standard deviation of 18O |
per mil |
Picarro L2120-i |
2 |
Hourly |
|
Water vapour isotopic ratio (D) |
per mil |
Picarro L2120-i |
2 |
Normalized to V-SMOW; Humidity dependence correlation: No |
|
Standard deviation of D |
per mil |
Picarro L2120-i |
2 |
Hourly |
|
Air temperature |
K |
HMP45A |
3.9 |
− |
|
Relative humidity |
<=100% |
HMP45A |
3.9 |
− |
|
Air pressure |
Pa |
HMP45A |
3.9 |
− |
|
Precipitation |
mm |
TE525MM |
− |
− |
|
Net radiation |
W/m2 |
CNR-1 |
2.35 |
− |
|
Wind speed |
m/s |
DA600-62AX |
3.9 |
− |
|
Wind direction |
degree (°C) |
DA600-62AX |
3.9 |
− |
|
Air temperature |
K |
− |
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
Wei, Z., Yoshimura, K., Okazaki, A., Kim, W., Liu, Z. and Yokoi, M., 2015. Partitioning of evapotranspiration using high‐frequency water vapor isotopic measurement over a rice paddy field. Water Resources Research, 51(5), pp.3716-3729.
Wei, Z., Yoshimura, K., Okazaki, A., Ono, K., Kim, W., Yokoi, M. and Lai, C.T., 2016. Understanding the variability of water isotopologues in near-surface atmospheric moisture over a humid subtropical rice paddy in Tsukuba, Japan. Journal of Hydrology, 533, pp.91-102.
Site contact
Name: Kei Yoshimura