What is the Data Lister tool?

Access point to historic station and gridded data

Area options

• County, County Warning Area
• Climate Division, Drainage Basin
• Custom Polygons and Bounding Boxes

Data summary options

• Maximum/Minimum
• Mean/Sum

What datasets are available?

Works with historic station data as well as gridded datasets.

About gridded datasets

Temporal Resolution
Daily for station data
Daily (NARRCAP, PRISM), monthly/yearly (PRISM)
Observed Quantities
Station/Gridded:
Precipitation (in/mm)
Maximum Temperature (F/C), Minimum Temperature (F/C)
Station only:
Observation Time Temperature (F/C)
Snowfall (in/mm), Snow Depth (in/mm)
Derived Quantities
Station/Gridded:
Heating/Cooling/Growing Degree Days (F/C)
Average Temperature (F/C)

All data sets are made available through the ACIS system.
ACIS Home Page

What can you do with this tool?

Access and download data
Available Data Formats: .xls, .dat, .txt, html(prints to screen)

Region
Type of search area.
Map interfaces will help you find the identifiers
or enable you to draw a custom polygon.
Several search area options are available.

• Individual Station, List of Stations: Search by station IDs or names.
• State: US state abbreviation.
• County(FIPS), County Warning Area, Climate Division, Basin: Search by code or name or use the map.
• Using the map to find
  County/County Warning Area/Climate Division/Basin codes
• Chose the US state from the dropdown above the map.
• Wait until the new map has loaded.
• Once the map overlays are visible,
  click on an area on the map to see the name and ID of that area.
• Note that clicking on an area on the map
  will populate the main form with the corresponding identifier.
• Custom Shape: Use the map interface to draw a custom polygon.
• Using the map interface to draw a custom shape
• You can place a marker on the map or
  draw a rectangle, circle or polygon.
  Click on the appropriate icon in the legend on the top of the map.
• Marker: Point and click on the map.
• Rectangle: Point at a corner of your rectangle, click, hold and drag in the desired direction.
• Circle: Point at the center of your circle, click, hold and drag outwards.
• Polygon: Point and click at each corner of your polygon.
  Finish by double clicking at the final point
  or by clicking on the first point of your polygon.

Data Type
Weather station data or gridded data.

Grid

See more on gridded datasets

Start Date/End Date
Time period of the request. Several formats are supported:

• yyyymmdd
• yyyy-mm-dd
• yyyy/mm/dd

Temporal Resolution (For PRISM grid data only)
PRISM data are offered in daily,monthly and yearly resolution,
all other datasets are daily.

Variables

Choose one or more climate variables from the drop down menu.
Only a limited set of climate variables are available for gridded data.

Units
Data can be obtained in metric or English units.

Note: degree day calculations are preformed
with base temperatures in Fahrenheit.


• English:
    Temperatures in Fahrenheit
    Precipitation/Snow/Pan Evaporation in Inches
    Wind Movements in Miles
  
• Metric:
  Note: native database units are English.
  If you choose metric, be aware that data values loose precision
  since they are converted from English units and will be rounded.
    Temperatures in Celsius
    Precipitation/Snow/Pan Evaporation in Millimiter
    Degree Days: °C HDD = (5/9) x (°F HDD)
    Wind Movements in Kilometers

Add Degree Days:
Choose yes if you are looking for degree days with different base temperatures.

Degree Days
Enter a comma separated list of degree day
abbreviations with base temperature.
Example:
gdd56: Growing Degree Days with base temperature 56 Fahrenheit
cdd70: Cooling Degree Days with base temperature 70 Fahrenheit
Comma separated list to enter: gdd56,cdd70

Data Summary
None:
No data summary will be performed.
Windowed Data:
Returns data for seklect time windows within the date range you selected
Example:
Start Date: 2000-01-01, End Date: 2002-12-31, Window Start: 05-15, Window end: 05-17
Returns data for:
2000-05-15, 2000-05-16, 2000-05-17
2001-05-15, 2001-05-16, 2001-05-17
2002-05-15, 2002-05-16, 2002-05-17
Temporal:
Data is summarized over time defined by Start Date and End Date at each data point.
The result is a geospatial layer.
Example:
Temporal summary of sum of precipitation from 2000-01-01 to 2000-01-31 over all stations in Nevada
Returns the sum of January precipitaion at each station in Nevada.
Spatial:
Data is summarized over each point in the selected region. The result is a time series.
Example:
Spatial summary of daily precipitation from 2000-01-01 to 2000-01-31 averaged over all stations in Nevada
Returns mean daily precipitation of all stations in Nevada for each day in January 2000.

Show Flags (Non-summarized station data only)
Choose 'Yes' if you want the data flags to be appended to your data values.
Flags:

• M -- Missing: data is missing or invalid
• A -- Accumulated: data value has been accumulated over multiple time periods
• S -- Subsequent: data contributes to accumulated value
• T -- Trace: Trace amount

Show Observation Time (Non-summarized station data only)
Choose 'Yes' if you want the time of observation to be appended to your data values.

Data Format
Data output format. File formats currently available:

• Excel (.xls)
• Delimited (.txt)
• Columnar (.dat)

Html displays to page (for single point requests only).

Delimiter
If you chose a file format other than excel (.xls) or html, this option will appear.
It defines the delimiter that will separate the data values,
the flags and observation time of your request.