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MS007 – Simplified metadata
Dataset
- Database Code
- MS007
- Title
- Snow depth and snow water equivalent measurements from Benchmark Stations, along a road course, and historic snow course in the Andrews Experimental Forest, 1978 to present
- Abstract
- With an increase in emphasis on monitoring climate change impacts and change in the form of precipitation at HJ Andrews Experimental Forest, snow data collection within our climate monitoring program, a snow course to document depths of snow was designed around a dispersed sampling scheme rather than a point intensive scheme as previously employed in the historic Reference Stand snow course. Primary objectives are to document the presence/absence of snow, snow depth, and time of melt-off. Snow depths are verified using stakes placed near the road to allow for routine and frequent observation. Stakes are placed at different locations, elevations and aspects in paired forested/open sites. Time-lapse cameras were deployed at all the stakes to allow for daily measurements beginning in fall 2014. Truthing of points with snow core sampling for snow moisture content (snow water equivalent) is done when possible, usually 1-2 times per year. Cameras are set to take 3 readings per day (09:00, 12:00, 15:00 PST). One snow depth and coverage is extracted from the images per stake per day. Additionally, snow water equivalence (SWE) and snow depth are measured in high precision at a few of the Benchmark Meteorological Stations (BMS). These latter data streams were stored in MS001, but were migrated to MS007 in 2025.
- Keywords
- hydrology; climatology; microclimate; precipitation; snow water equivalence; snow depth; reference stands; modeling; canopy gaps; forest management
- Date begin
- 1000-01-01
- Date end
- 1000-01-01
- Principal Investigator
- Sherri L. Johnson Mark D Schulze
Entities
- Snow depth and snow water equivalent measurements along road course
- Reference Stand snow depth and snow water equivalent measurements
- Snowmelt lysimeter (daily)
- Snow water equivalence (SWE) and snow depth (daily midnight)
- Snowmelt lysimeter (fine temporal resolution)
- Snow water equivalence (SWE) and snow depth (median depth for each hour)
- Snow water equivalence (SWE) and snow depth based on episodic snow course measurements near the station
1. Snow depth and snow water equivalent measurements along road course - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1.000000) | range | 1.0000 | 1.0000 | number |
| SNOW_YEAR | numeric(1) | range | 1995.0000 | 2022.0000 | year (yyyy) |
| SITECODE | varchar | enum | |||
| POSITION | numeric(1.000000) | range | 1.0000 | 3.0000 | number |
| DATE_TIME | datetime | freetext | |||
| SNOW_DEPTH_METHOD | varchar | enum | |||
| SNOW_DEPTH_INST | numeric(15.000000) | range | 0.0000 | 3414.0000 | millimeters |
| SNOW_DEPTH_INST_FLAG | varchar | enum | |||
| SNOW_COVER | numeric(10.000000) | range | 0.0000 | 100.0000 | percent |
| SNOW_COVER_FLAG | varchar | enum | |||
| SNOW_DEPTH_LOW | numeric(50.000000) | range | 0.0000 | 3353.0000 | millimeters |
| SNOW_DEPTH_LOW_FLAG | varchar | enum | |||
| SNOW_DEPTH_HI | numeric(50.000000) | range | 0.0000 | 3475.0000 | millimeters |
| SNOW_DEPTH_HI_FLAG | varchar | enum | |||
| SWE_INST | numeric(15.000000) | range | 0.0000 | 1397.0000 | millimeters |
| SWE_INST_FLAG | varchar | enum | |||
| TUBE_DEPTH | numeric(15.000000) | range | 0.0000 | 3454.0000 | millimeters |
| TUBE_DEPTH_FLAG | varchar | enum | |||
| NOTES | varchar | freetext |
2. Reference Stand snow depth and snow water equivalent measurements - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1.000000) | range | 2.0000 | 2.0000 | number |
| SITECODE | varchar | enum | |||
| DATE_TIME | datetime | freetext | |||
| SWE_INST2 | numeric(1) | range | 0.0000 | 1537.0000 | millimeters |
| SWE_INST_FLAG | varchar | enum | |||
| TUBE_DEPTH2 | numeric(1) | range | 0.0000 | 3531.0000 | millimeters |
| TUBE_DEPTH_FLAG | varchar | enum |
3. Snowmelt lysimeter (daily) - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1.000000) | range | 9.0000 | 9.0000 | number |
| SITECODE | varchar | enum | |||
| SNOWMELT_METHOD | varchar | enum | |||
| QC_LEVEL | varchar | enum | |||
| DATE | datetime | freetext | |||
| SNOWMELT_TOT_DAY | numeric(0.300000) | range | 0.0000 | 252.8000 | millimeters |
| SNOWMELT_TOT_FLAG | varchar | enum | |||
| EVENT_CODE | varchar | enum |
4. Snow water equivalence (SWE) and snow depth (daily midnight) - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1.000000) | range | 10.0000 | 10.0000 | number |
| SITECODE | varchar | enum | |||
| SNOW_METHOD | varchar | enum | |||
| QC_LEVEL | varchar | enum | |||
| PROBE_CODE | varchar | freetext | |||
| DATE_TIME | datetime | freetext | |||
| SWE_DAY | numeric(1.000000) | range | 0.0000 | 1600.0000 | millimeters |
| SWE_DAY_FLAG | varchar | enum | |||
| SNOWDEP_DAY | numeric(1) | range | 0.0000 | 4437.0000 | milliliters |
| SNOWDEP_DAY_FLAG | varchar | enum | |||
| EVENT_CODE | varchar | enum |
5. Snowmelt lysimeter (fine temporal resolution) - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1.000000) | range | 19.0000 | 19.0000 | number |
| SITECODE | varchar | enum | |||
| SNOWMELT_METHOD | varchar | enum | |||
| QC_LEVEL | varchar | enum | |||
| PROBE_CODE | varchar | freetext | |||
| DATE_TIME | datetime | freetext | |||
| SNOWMELT_TOT | numeric(0.250000) | range | 0.0000 | 9.1400 | millimeters |
| SNOWMELT_TOT_FLAG | varchar | enum | |||
| EVENT_CODE | varchar | enum |
6. Snow water equivalence (SWE) and snow depth (median depth for each hour) - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1.000000) | range | 20.0000 | 20.0000 | number |
| SITECODE | varchar | enum | |||
| SNOW_METHOD | varchar | enum | |||
| QC_LEVEL | varchar | enum | |||
| PROBE_CODE | varchar | freetext | |||
| DATE_TIME | datetime | freetext | |||
| SWE_MED | numeric(1.000000) | range | 0.0000 | 1600.0000 | millimeters |
| SWE_MED_FLAG | varchar | enum | |||
| SNOWDEP_MED | numeric(3.000000) | range | 0.0000 | 4437.0000 | millimeters |
| SNOWDEP_MED_FLAG | varchar | enum | |||
| EVENT_CODE | varchar | enum |
7. Snow water equivalence (SWE) and snow depth based on episodic snow course measurements near the station - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1.000000) | range | 30.0000 | 30.0000 | number |
| SITECODE | varchar | enum | |||
| SWE_METHOD | varchar | enum | |||
| QC_LEVEL | varchar | enum | |||
| PROBE_CODE | varchar | freetext | |||
| DATE_TIME | datetime | freetext | |||
| SWE_MEAN | numeric(13.000000) | range | 0.0000 | 1875.0000 | millimeters |
| SWE_MEAN_FLAG | varchar | enum | |||
| SNOWDEP_MEAN | numeric(13.000000) | range | 0.0000 | 4229.0000 | millimeters |
| SNOWDEP_MEAN_FLAG | varchar | enum | |||
| SNOWDEP_CHECK | numeric(25.000000) | range | 0.0000 | 4115.0000 | millimeters |
| SNOWDEP_CHECK_FLAG | varchar | enum | |||
| EVENT_CODE | varchar | enum | |||
| COMMENT | varchar | freetext |
Attribute definitions
- COMMENT
- Comment regarding data measurement
- DATE
- Date of measurement
- DATE_TIME
- Date and time in Pacific Standard Time (PST) of sensor reading
- DBCODE
- Database code MS007
- ENTITY
- Entity number
- EVENT_CODE
- Any event, disruption in protocol, or unusual conditions that occur at the given date or time and may have an effect on the data values; contact information manager for access to specific details from the field 'Notes' database
- NOTES
- Data entry notes with either camera or field conditions
- POSITION
- Position number is '1' unless the snow stake location has been moved from the original location, in which case the position number is incremented by 1
- PROBE_CODE
- Probe number code indicates the measurement type, site, and sensor number (e.g., SNOPRI01)
- QC_LEVEL
- Quality control flag indicates level of quality checking performed including an indication of "provisional" data.
- SITECODE
- Site code for the snow measurement site
- SNOWDEP_CHECK
- Snow depth is measured under the snow depth sensor as a check reading (begins WY 1999) - only listed in conjunction with probes: CENMET02, UPLMET02, VANMET02
- SNOWDEP_CHECK_FLAG
- Check snow depth reading flag
- SNOWDEP_DAY
- Daily snow depth value is median value of last hour of day
- SNOWDEP_DAY_FLAG
- Daily snow depth flag
- SNOWDEP_MEAN
- Mean snow depth determined from the station snow course - snow depth is measured from snow cores along a transect, and either snow cores or snow stakes measure depth near each corner of a snow pillow
- SNOWDEP_MEAN_FLAG
- Mean snow depth flag
- SNOWDEP_MED
- Median value of snow depth over the past interval (typically hourly)
- SNOWDEP_MED_FLAG
- Snow depth median flag
- SNOWMELT_METHOD
- An indication of the the general methodology and instrumentation used to collect this snow melt data
- SNOWMELT_TOT
- Total snowmelt over the past interval (e.g., 5 minutes or 60 minutes)
- SNOWMELT_TOT_DAY
- Daily total snowmelt
- SNOWMELT_TOT_FLAG
- Total snowmelt flag
- SNOW_COVER
- Visual estimate of percent of area covered with snow in immediate vicinity
- SNOW_COVER_FLAG
- Snow coverage percent qualifier flag
- SNOW_DEPTH_HI
- Visual estimate of highest snow depth in the immediate vicinity based on variation from the observed depth measurement at the survey stake
- SNOW_DEPTH_HI_FLAG
- High snow depth qualifier flag
- SNOW_DEPTH_INST
- Instantaneous snow depth as measured against an established snow stake
- SNOW_DEPTH_INST_FLAG
- Instantaneous snow depth qualifier flag
- SNOW_DEPTH_LOW
- Visual estimate of lowest snow depth in the immediate vicinity based on variation from the observed depth measurement at the survey stake
- SNOW_DEPTH_LOW_FLAG
- Low snow depth qualifier flag
- SNOW_DEPTH_METHOD
- Snow depth method indicates whether depth has been measured directly during a site visit or is determined from a snow camera image
- SNOW_METHOD
- An indication of the the general methodology and instrumentation used to collect this snow water equivalence and snow depth data
- SNOW_YEAR
- Snow year represents the winter season that typically starts in the fall of the previous calendar year
- SWE_DAY
- Daily snow water equivalence (SWE) value is median value of last hour of day
- SWE_DAY_FLAG
- Daily snow water equivalence flag
- SWE_INST
- Instantaneous snow water equivalent measurement using a Mt. Rose snow tube sampler (represents an average of multiple sample cores) - measurement location varies within the vicinity of the site snow stake
- SWE_INST2
- Instantaneous snow water equivalent measurement (snow moisture) using a Mt. Rose snow tube sampler along a fixed snow course transect (represents an average of multiple sample cores)
- SWE_INST_FLAG
- Instantaneous snow water equivalent qualifier flag
- SWE_MEAN
- Mean snow water equivalence determined from the station snow course - snow cores are taken along a transect or at four corners of the snow pillow
- SWE_MEAN_FLAG
- Mean snow water equivalence flag
- SWE_MED
- Median value of snow water equivalence (snow moisture) over the past interval (typically hourly)
- SWE_MED_FLAG
- Snow water equivalence median flag
- SWE_METHOD
- Method used to calculate snow water equivalence: standard snow course calculation procedures or estimated based on snow depth at snow stakes and snow density along snow course
- TUBE_DEPTH
- Snow depth as measured by the Mt. Rose snow tube sampler (represents an average of multiple depth readings) - measurement location varies within the vicinity of the site snow stake
- TUBE_DEPTH2
- Snow depth as measured by the Mt.Rose snow tube sampler along a fixed snow course transect (represents an average of multiple sample cores)
- TUBE_DEPTH_FLAG
- Snow tube depth qualifier flag
Enumerated domains
Enumerated domain for attribute: DBCODE
| Code | Description |
|---|---|
| MS007 | Study code MS007 |
Enumerated domain for attribute: SITECODE
| Code | Description |
|---|---|
| CENMET | Central Meteorological Station |
| UPLMET | Upper Lookout Meteorological Station |
| VANMET | Vanilla Leaf Meteorological Station |
| H15MET | High 15 Meteorological Station |
| RS03__ | Reference Stand RS03 air/soil temperature site |
| RS04__ | Reference Stand RS04 air/soil temperature site |
| RS12__ | Reference Stand RS12 air/soil temperature site |
| RS13__ | Reference Stand RS13 air/soil temperature site |
| RS14__ | Reference Stand RS14 air/soil temperature site |
| RS26__ | Reference Stand RS26 air/soil temperature site |
| RS38__ | Reference Stand RS38 air/soil temperature site (formerly TS38__) |
| RS13O_ | Reference Stand RS13 Open canopy air/soil temperature site |
| MACKWE | Mack West raingage |
| MIDWAY | Midway raingage |
| R320F1 | Road 320 forest site 1 snow stake |
| R320F2 | Road 320 forest site 2 snow stake |
| R320F3 | Road 320 forest site 3 snow stake |
| R320F4 | Road 320 forest site 4 snow stake |
| R320O1 | Road 320 open site 1 snow stake |
| R320O2 | Road 320 open site 2 snow stake |
| R320O3 | Road 320 open site 3 snow stake |
| R320O4 | Road 320 open site 4 snow stake |
| R350F1 | Road 350 forest site 1 snow stake |
| R350F2 | Road 350 forest site 2 snow stake |
| R350F3 | Road 350 forest site 3 snow stake |
| R350F4 | Road 350 forest site 4 snow stake |
| R350O1 | Road 350 open site 1 snow stake |
| R350O2 | Road 350 open site 2 snow stake |
| R350O3 | Road 350 open site 3 snow stake |
| R350O4 | Road 350 open site 4 snow stake |
| R360F1 | Road 360 forest site 1 snow stake |
| R360F2 | Road 360 forest site 2 snow stake |
| R360O1 | Road 360 open site 1 snow stake |
| R360O2 | Road 360 open site 2 snow stake |
| R506F1 | Road 1506 forest site 1 snow stake |
| R506F2 | Road 1506 forest site 2 snow stake |
| R506F3 | Road 1506 forest site 3 snow stake |
| R506F4 | Road 1506 forest site 4 snow stake |
| R506F5 | Road 1506 forest site 5 snow stake |
| R506F6 | Road 1506 forest site 6 snow stake |
| R506O1 | Road 1506 open site 1 snow stake |
| R506O2 | Road 1506 open site 2 snow stake |
| R506O3 | Road 1506 open site 3 snow stake |
| R506O4 | Road 1506 open site 4 snow stake |
| R506O5 | Road 1506 open site 5 snow stake |
| R506O6 | Road 1506 open site 6 snow stake |
| R507F1 | Road 1507 forest site 1 snow stake |
| R507F2 | Road 1507 forest site 2 snow stake |
| R507F3 | Road 1507 forest site 3 snow stake |
| R507F4 | Road 1507 forest site 4 snow stake |
| R507O1 | Road 1507 open site 1 snow stake |
| R507O2 | Road 1507 open site 2 snow stake |
| R507O3 | Road 1507 open site 3 snow stake |
| R507O4 | Road 1507 open site 4 snow stake |
| RDSEND | Roads End raingage |
| RS03O_ | Reference Stand RS03 Open canopy snow course site |
| RS04O_ | Reference Stand RS04 Open canopy snow course site |
| RS05O_ | Reference Stand RS05 Open canopy snow course site |
| RS12O_ | Reference Stand RS12 Open canopy snow course site |
| RS14O_ | Reference Stand RS14 Open canopy snow course site |
| RS18O_ | Reference Stand RS18 Open canopy snow course site |
| RS26O_ | Reference Stand RS26 Open canopy snow course site |
| VARMET | Vanilla Leaf Meadow Meteorological Station |
| R350E4 | Road 350 forest site 4 snow stake, alternative site |
Enumerated domain for attribute: SNOW_DEPTH_METHOD
| Code | Description |
|---|---|
| V | Snow depth at the stake is measured directly during a site visit |
| I | Snow depth at the stake is determined from a snow camera image |
Enumerated domain for attribute: SNOW_DEPTH_INST_FLAG
| Code | Description |
|---|---|
| A | Accepted value |
| + | Snow depth exceeds height of snow stake - a snow core depth will be used if taken, otherwise the maximum stake height is used |
| M | Missing value |
| Q | Questionable value |
| T | Trace of snow (<0.05 ft.) |
Enumerated domain for attribute: SNOW_COVER_FLAG
| Code | Description |
|---|---|
| A | Accepted value |
| M | Missing |
| Q | Questionable |
| T | Trace of snow (<0.05 ft., 3-15 mm) |
Enumerated domain for attribute: SNOW_DEPTH_LOW_FLAG
| Code | Description |
|---|---|
| A | Accepted value |
| M | Missing value |
| Q | Questionable value |
| T | Trace of snow (<0.05 ft., 3-15 mm) |
Enumerated domain for attribute: SNOW_DEPTH_HI_FLAG
| Code | Description |
|---|---|
| A | Accepted value |
| M | Missing value |
| Q | Questionable value |
| T | Trace of snow (<0.05 ft., 3-15 mm) |
Enumerated domain for attribute: SWE_INST_FLAG
| Code | Description |
|---|---|
| A | Accepted value |
| B | Bulk sample taken due to low snow depth - 3 samples combined using weighted average |
| M | Missing value |
| N | Insufficient snow depth for core sampler measurement of snow moisture |
| S | Single snow core sample point only - usually 3 cores are taken |
| + | Full depth was not recorded by snow core - depth exceeds length of core sampler |
Enumerated domain for attribute: TUBE_DEPTH_FLAG
| Code | Description |
|---|---|
| A | Accepted value |
| M | Missing value |
| N | Insufficient snow depth for core sampler measurement of snow depth |
| Q | Questionable value |
| T | Trace of snow (<0.05 ft., 1-15 mm) |
| S | Single snow core sample point only - usually 3 cores are taken |
| B | Bulk core sample - one bulk sample is used rather than multiple independent samples to determine SWE |
Enumerated domain for attribute: SNOWMELT_METHOD
| Code | Description |
|---|---|
| LYS001 | Snow/rain water runoff is measured by a custom-made tipping bucket with a lysimeter pan constructed with plywood with dimensions 92"x93"x12". An A-35 chart recorder marks each tip on the chart and the number of tips are compiled every 15 minutes |
| LYS002 | Snow/rain water runoff is measured by a custom-made tipping bucket with a lysimeter pan constructed with plywood with dimensions 92"x93"x12". A Campbell data logger records each tip and outputs the number of tips every 5 minutes |
| LYS101 | Total daily snow/rain water runoff is post-calculated from the number of tips measured by a custom-made tipping bucket with a lysimeter pan constructed with plywood with dimensions 92"x93"x12" with an A-35 chart recorder (See Method LYS001) |
| LYS102 | Total daily snow/rain water runoff is post-calculated from the number of tips measured by a custom-made tipping bucket with a lysimeter pan constructed with plywood with dimensions 92"x93"x12" with a Campbell Scientific data logger (See Method LYS002) |
Enumerated domain for attribute: QC_LEVEL
| Code | Description |
|---|---|
| 1P | Data is provisional and subject to revision - preliminary quality checks have been performed |
| 1A | Data is published and unlikely to change - automated range checking and manual review has been conducted. Quality is indicated in data value qualifier flags. |
| 2A | Data is published and unlikely to change - Level 1A data has been modified such that data gaps may be filled or problem data may be removed |
| 2D | Data is published and unlikely to change - data is derived or aggregated from published data of level 2A |
| 1D | Data is published and unlikely to change - data is derived or aggregated from published data of level 1A |
Enumerated domain for attribute: SNOWMELT_TOT_FLAG
| Code | Description |
|---|---|
| A | Accepted value has passed all QC tests applied as represented by the quality level |
| E | Estimated value |
| M | Missing |
| Q | Questionable |
| U | Snow lysimeter is undercatching snowmelt |
| P | Fire effects are visible in the data |
Enumerated domain for attribute: EVENT_CODE
| Code | Description |
|---|---|
| INSREM | Sensor is installed or removed |
| LOGGER | Change in data logger, data logger program, or wiring |
| METHOD | Change in data collection method |
| NA | No event is reported (not applicable) |
| QUALTY | Event may directly affect data quality (individual activities tracked in field notes database) |
| MAINTE | A maintenance event has occurred |
| INTPRO | Internal processing may produce an anomalous reading |
| WEATHR | A weather event has occurred that may affect reading |
| CALIBR | Associated with the inspection or replacement of sensors for calibration |
| CLEARD | Site clearing of trees and brush around the meteorological station is being conducted |
| BURNED | Burning, including cleared trees and brush or wildfire, around the meteorological station or within the watershed (code begins at event initiation) |
Enumerated domain for attribute: SNOW_METHOD
| Code | Description |
|---|---|
| SNO001 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow with Druck pressure transducer and instantaneous values are output at sunrise, sunset and midnight; no snow depth is recorded |
| SNO002 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow with Druck pressure transducer and instantaneous values are output hourly; no snow depth is recorded |
| SNO003 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow with Druck pressure transducer and instantaneous values are recorded every 5 minutes with median values output hourly; no snow depth is recorded |
| SNO004 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow w/ Druck pressure transducer; snow depth is recorded with a CS SR50 sonic ranging sensor attached to an independent pole near shelter; median 5-minute values are output hourly |
| SNO005 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow w/ Druck pressure transducer; snow depth is recorded with a Judd communications sensor attached to pole extension from shelter; median 5-minute values are output hourly |
| SNO006 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow w/ Druck pressure transducer; snow depth is recorded with a Judd communications sensor attached to pole extension from tower; median 5-minute values are output hourly |
| SNO007 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow w/ Druck pressure transducer; snow depth is recorded with a CS SR50 sonic ranging sensor attached to pole extension from tower; median 5-minute values are output hourly |
| SNO008 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow w/ Druck pressure transducer; snow depth is recorded with a Judd communications sensor attached to pole from tower over gravel pad; median 5-minute values are output hourly |
| SNO009 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow w/ Druck pressure transducer; snow depth is recorded with CS SR50 sonic ranging sensor attached to pole from shelter over gravel pad; median 5-minute values are output hourly |
| SNO010 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow w/ Druck pressure transducer; snow depth is recorded with CS SR50A sonic ranging sensor attached to pole from shelter over gravel pad; median 5-minute values are output hourly |
| SNO011 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow w/ Druck pressure transducer; snow depth is recorded with CS SR50A sonic ranging sensor attached to pole from tower over gravel pad; median 5-minute values are output hourly |
| SNO012 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow w/ Druck pressure transducer; snow depth is recorded with CS SR50A sonic ranging sensor attached from small tower over snow pillow; median 5-minute values are output hourly |
| SNO013 | Snow water equivalence (SWE) is measured by a Park Mechanical pressure pillow w/ Druck pressure transducer; snow depth is recorded with CS SR50 sonic ranging sensor attached from small tower over snow pillow; median 5-minute values are output hourly |
| SNO101 | Daily snow water equivalence (SWE) is the instantaneous midnight value; Park Mechanical pressure pillow with Druck pressure transducer (See Method SNO001) |
| SNO102 | Daily snow water equivalence (SWE) is the instantaneous midnight value; Park Mechanical pressure pillow with Druck pressure transducer (See Method SNO002) |
| SNO103 | Daily snow water equivalence (SWE) is the median of 5 minute values over the last hour of the day; Park Mechanical pressure pillow with Druck pressure transducer (See Method SNO003) |
| SNO104 | Daily snow water equivalence (SWE) and snow depth are the median of 5 minute values over the last hour of the day; Park Mechanical pressure pillow with Druck pressure transducer; CS SR50 sonic ranging sensor attached to pole (See Method SNO004) |
| SNO105 | Daily snow water equivalence (SWE) and snow depth are the median of 5 minute values over the last hour of the day; Park Mechanical pressure pillow with Druck pressure transducer; Judd communications sensor attached to shelter (See Method SNO005) |
| SNO106 | Daily snow water equivalence (SWE) and snow depth are the median of 5 minute values over the last hour of the day; Park Mechanical pressure pillow with Druck pressure transducer; Judd communications sensor attached to tower (See Method SNO006) |
| SNO107 | Daily snow water equivalence (SWE) and snow depth are the median of 5 minute values over the last hour of the day; Park Mechanical pressure pillow with Druck pressure transducer; CS SR50 sonic ranging sensor attached to tower (See Method SNO007) |
| SNO108 | Daily snow water equivalence (SWE) and snow depth are the median of 5 minute values over the last hour of the day; Park Mechanical pressure pillow with Druck pressure transducer; Judd communications sensor at tower over gravel pad (See Method SNO008) |
| SNO109 | Daily snow water equivalence (SWE) and snow depth are the median of 5 minute values over the last hour of the day; Park Mechanical pressure pillow with Druck pressure transducer;CS SR50 sonic ranging sensor at shelter over gravel pad (See Method SNO009) |
| SNO110 | Daily snow water equivalence (SWE) and snow depth are the running median of preceding 5 minute values at midnight; Park Mechanical pressure pillow with Druck pressure transducer;CS SR50A sonic ranging sensor at shelter over gravel pad(See Method SNO010) |
| SNO111 | Daily snow water equivalence (SWE) and snow depth are the running median of preceding 5 minute values at midnight; Park Mechanical pressure pillow with Druck pressure transducer; CS SR50A sonic ranging sensor at tower over gravel pad (See Method SNO011) |
| SNO112 | Daily snow water equivalence (SWE) and snow depth are the running median of preceding 5 minute values at midnight; Park Mechanical pressure pillow with Druck pressure transducer;CS SR50A sonic ranging sensor/sm.tower over snow pillow (See Method SNO012) |
| SNO113 | Daily snow water equivalence (SWE) and snow depth are the running median of preceding 5 minute values at midnight; Park Mechanical pressure pillow with Druck pressure transducer; CS SR50 sonic ranging sensor/sm.tower over snow pillow (See Method SNO013) |
| SNO014 | Snow depth only is recorded with CS SR50 sonic ranging sensor attached from small tower over snow pillow; median of 10-minute instantaneous values are output hourly |
Enumerated domain for attribute: SWE_DAY_FLAG
| Code | Description |
|---|---|
| A | Accepted value has passed all QC tests applied as represented by the quality level |
| E | Estimated value |
| M | Missing value |
| Q | Questionable value |
| P | Fire effects are visible in the data |
Enumerated domain for attribute: SNOWDEP_DAY_FLAG
| Code | Description |
|---|---|
| A | Accepted value has passed all QC tests applied as represented by the quality level |
| E | Estimated value |
| M | Missing value |
| Q | Questionable value |
| P | Fire effects are visible in the data |
Enumerated domain for attribute: SWE_MED_FLAG
| Code | Description |
|---|---|
| A | Accepted value has passed all QC tests applied as represented by the quality level |
| M | Missing |
| E | Estimated value |
| Q | Questionable |
| B | Bulk sample taken due to low snow depth - 3 samples combined using weighted average |
| P | Fire effects are visible in the data |
Enumerated domain for attribute: SNOWDEP_MED_FLAG
| Code | Description |
|---|---|
| A | Accepted value has passed all QC tests applied as represented by the quality level |
| M | Missing |
| E | Estimated value |
| Q | Questionable |
| P | Fire effects are visible in the data |
Enumerated domain for attribute: SWE_METHOD
| Code | Description |
|---|---|
| SWE001 | Station snow course is used to calculate SWE; course consists of five snow cores taken along a transect at the station; snow depth is the average of sample core depths; insufficient snow or snow conditions may prevent SWE measurement |
| SWE003 | Snow depth measured at four snow stakes positioned at each corner of the snow pillow is used in conjunction with snow density measured along the station snow course transect to calculate SWE; depth is average at snow stakes |
| SWE002 | Snow pillow course is used to calculate SWE; course consists of four snow cores taken near each corner of the snow pillow; snow depth is the average of sample core depths; insufficient snow or snow conditions may prevent SWE measurement |
Enumerated domain for attribute: SWE_MEAN_FLAG
| Code | Description |
|---|---|
| A | Accepted value has passed all QC tests applied as represented by the quality level |
| B | Bulk sample taken due to low snow depth - 3 samples combined using weighted average |
| E | Estimated value |
| M | Missing vlaue |
| Q | Questionable value |
| P | Fire effects are visible in the data |
Enumerated domain for attribute: SNOWDEP_MEAN_FLAG
| Code | Description |
|---|---|
| A | Accepted value has passed all QC tests applied as represented by the quality level |
| E | Estimated value |
| M | Missing value |
| Q | Questionable value |
| P | Fire effects are visible in the data |
Enumerated domain for attribute: SNOWDEP_CHECK_FLAG
| Code | Description |
|---|---|
| M | Missing value |
| A | Accepted value has passed all QC tests applied as represented by the quality level |
| P | Fire effects are visible in the data |