# Throughfall and Isotopic Ratios on WS1 at the Andrews Experimental Forest, 2010-2011

## Dataset

- **Database Code:** MV003

- **Title:** Throughfall and Isotopic Ratios on WS1 at the Andrews Experimental Forest, 2010-2011

- **Abstract:**

The data in this set describes the throughfall collection on WS1 during 2010 and 2011, as well as the isotopic data assessed from these samples. In the Fall of 2010 there were eleven collection periods and in the Spring of 2011 there were eight collection periods. Data is no longer being collected. Throughfall and rainfall were measured at point locations, measured for the quantity and isotopic composition (Oxygen-16/18 and Hydrogen/Deuterium). Stemflow was also collected off of two PSME trees, one on the north-facing and one on the south-facing slope. These are the "plots" for this study, although they have no defined radius. During the Fall 2010 collection period, thirteen collectors were used, near the stream channel, along the trail in WS1. During the Spring 2011, there were eighteen collectors at each of two plots. Rainfall was also measured in an opening at the WS1 landing for comparison.


- **Keywords:** interception; throughfall; water balance; evaporation

- **Temporal coverage:** 2010-10-09 to 2011-07-10

- **Principal Investigator:** Barbara J Bond


## Data Entities

1. MV00301

## Entity 1: MV00301

### Attribute list

- **DBCODE** — varchar, enum

Database Code (assigned by FSDB data manager)

  - **MV003** — FSDB Database code MV003


- **ENTITY** — numeric(1), range  1.0000  1.0000, number

Entity number (data table number)


- **YEAR** — datetime, freetext

Year of measurement


- **PERIOD** — varchar, enum

Site code

  - **FALL** — Fall sampling period from 2010
  - **SPNG** — Spring of 2011 collection period


- **START_DATETIME** — datetime, freetext

date and time of deployment


- **END_DATETIME** — datetime, freetext

date and of collectoin


- **TYPE** — varchar, enum

Throughfall, rainfall, or stemflow

  - **TF** — Throughfall
  - **SF** — Stemflow
  - **RF** — Rainfal


- **COLNUM** — numeric(1), range  1.0000  36.0000, number

collector number (refers to a consistent point location)


- **PLOT** — varchar, enum

plot

  - **WS01_SA_L** — WS1 Throughfall Collection, Landing of WS1
  - **WS01_SA_S** — WS1 Throughfall Collection, South side (north-aspect) plot
  - **WS01_SA_N** — WS1 Throughfall Collection, North side (south-aspect) plot
  - **WS01_SA_F** — WS1 Throughfall Collection, Fall sampling Plot


- **COLLECTORSIZE** — varchar, enum

diameter of collector used

  - **93** — 93 millimeter diameter collector
  - **97** — 97 millimeter diameter collector
  - **155** — 155 millimeter diameter collector
  - **NA** — No collector used


- **VOL** — numeric(5.000000), range  0.0000  11000.0000, milliliters

Volume measured in the collector


- **DEPTH** — numeric(1), range  0.0000  300.0000, millimeters

Throughfall/rainfall depth (vol / collector's area)


- **DEL18O** — numeric(0.070000), range  -16.0000  -5.0000, permil

Oxygen-18 as compared to the Vienna Standard Mean Ocean Water (VSMOW)


- **DEL2H** — numeric(0.280000), range  -200.0000  -30.0000, permil

Deuterium (heavy hydrogen) as compared to the Vienna Standard Mean Ocean Water (VSMOW)


## Attribute Definitions

**COLLECTORSIZE**

diameter of collector used


**COLNUM**

collector number (refers to a consistent point location)


**DBCODE**

Database Code (assigned by FSDB data manager)


**DEL2H**

Deuterium (heavy hydrogen) as compared to the Vienna Standard Mean Ocean Water (VSMOW)


**DEL18O**

Oxygen-18 as compared to the Vienna Standard Mean Ocean Water (VSMOW)


**DEPTH**

Throughfall/rainfall depth (vol / collector's area)


**END_DATETIME**

date and of collectoin


**ENTITY**

Entity number (data table number)


**PERIOD**

Site code


**PLOT**

plot


**START_DATETIME**

date and time of deployment


**TYPE**

Throughfall, rainfall, or stemflow


**VOL**

Volume measured in the collector


**YEAR**

Year of measurement


## Enumerated Domains

### DBCODE

- **MV003** — FSDB Database code MV003

### PERIOD

- **FALL** — Fall sampling period from 2010

- **SPNG** — Spring of 2011 collection period

### TYPE

- **TF** — Throughfall

- **SF** — Stemflow

- **RF** — Rainfal

### PLOT

- **WS01_SA_L** — WS1 Throughfall Collection, Landing of WS1

- **WS01_SA_S** — WS1 Throughfall Collection, South side (north-aspect) plot

- **WS01_SA_N** — WS1 Throughfall Collection, North side (south-aspect) plot

- **WS01_SA_F** — WS1 Throughfall Collection, Fall sampling Plot

### COLLECTORSIZE

- **93** — 93 millimeter diameter collector

- **97** — 97 millimeter diameter collector

- **155** — 155 millimeter diameter collector

- **NA** — No collector used