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CLPX Data

Cold Land Processes Field Experiment

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CLPX Study Area Map. See high-resolution map. Map courtesy of NSIDC.

Data Sets

The CLPX Data Set Table below lists both unrestricted and restricted CLPX data sets. Users who wish to access restricted data and/or get data set updates and information about upcoming CLPX programs and field experiments must register as a CLPX data user.

If you have problems accessing data or have questions, please contact NSIDC User Services.

For more information regarding the Cold Land Process Field Experiment (CLPX), please see the CLPX Overview page.

 

 

 

 

 


CLPX Data Set Table

Access Restricted/Login Required=Restricted Access: User must login or contact NSIDC User Services to access data.


Data Set/Product

Spatial Coverage


IOP1


IOP2


IOP3


IOP4


Data Volume


Parameters

Satellite Data

SSM/I Brightness Temperature Grids

All LRSA

X

X

X

X

4.07 MB

Microwave brightness temperature

AMSR-E Brightness Temperature Grids

All LRSA

   

X

X

2.76 MB

Microwave brightness temperature

SeaWinds on QuikSCAT Scatterometer Data
(Data not received. Responsible Investigator: Kyle McDonald, JPL)

All LRSA

X

X

X

X

50 MB

Radar backscatter

EO-1 Hyperion Surface Reflectance, Snow-Covered Area, and Grain Size

Swath intersects Fraser MSA

X

X

   

724 MB

Apparent surface reflectance
Subpixel snow-covered area
Grain size

Landsat Thematic Mapper Imagery

Two swaths each intersecting sections of each MSA

25 scenes collected during cloud sparse periods between July 2001 and March 2003

12 GB

Level 1 (radiance) radiometrically and geometrically corrected Landsat TM imagery

Multi-angle Imaging Spectroradiometer (MISR) Products

All LRSA

X

X

X

X

6.5 GB

Level 1B2 georectified terrain
Level 2 land surface
Ancillary geographic product

MODIS Radiances, Reflectances, Snow Cover and Related Grids

All LRSA

X

X

X

X

45 GB

Calibrated radiances
Surface reflectance
Snow cover
Land surface temperature and emissivity
Vegetation indices
Cloud mask

AVHRR/HRPT Brightness Temperatures and Reflectances

All LRSA

44 scenes collected between November 2001 and June 2003

188.64 MB

Calibrated reflectance
Brightness temperature

Airborne Data

Airborne Synthetic Aperture Radar (AIRSAR) Imagery

Each MSA

X

X

 

X

POLSAR 300 MB, TOPSAR 1 GB per flight line; 92.61 GB total

Polarimetric (POLSAR) and cross-track interferometry (TOPSAR) radar data at
P, L, and C bands

Airborne Visible/Infrared Imaging Spectrometer (AVIRIS)

Swaths intersect ISA

 

 

 

X

22.52 GB

Apparent surface reflectance
Subpixel snow-covered area
Grain size

Multiband Polarimetric Scanning Radiometer (PSR) Imagery

Each MSA

X

 

X

X

2.4 GB

Brightness temperature
Snow cover

Airborne GPS Bistatic Radar1

Each MSA

X

 

X

X

280 MB

Snow cover
Soil moisture

Infrared Orthophotography and LIDAR Topographic Mapping

Each ISA

     

X2

4.31 GB

Terrain elevation
Snow depth

Airborne Gamma Snow and Soil Moisture Surveys

Each MSA

X4

 

X4

X

1 MB

Snow water equivalent (SWE)
Soil moisture

Polarimetric Ku-Band Scatterometer (POLSCAT) Data

Each MSA

X

 

X

X

2.94 MB

Snow water equivalent

Micrometeorological Measurements Over Snow, Airborne

North Park MSA

   

X

X

2 GB

3-D winds
Fast response temperatures
Fast response water vapor mixing

 

Ground Data

Ground-Based Infrared Images of the LSOS Site

Within LSOS

X

X

 

X

38 MB

Digital thermograms
Meteorological parameters

Micrometeorologica Measurements Over Snow, Tower Mounted1

Adjacent to Potter Creek ISA

X

X

X

 

55 GB high-rate data

Micrometeorological parameters

Micrometeorological Measurements Over Snow, Ground-Based1

Potter Creek ISA

X

X

X

 

25 GB

Micrometeorological parameters

Ground-Based Frequency Modulated Continuous Wave (FMCW) Radar1

LSOS and in each MSA

X

X

X

X

80 MB

Snow reflectivity

Ground Based Passive Microwave Radiometer (GBMR-7) Data

Within LSOS

   

X5

X

8.05 MB

Brightness temperature
Radiation
Snow cover, depth, and stratigraphy
Snow water equivalent
Soil moisture

Ground-Based L and Ku Band Polarimetric Scatterometry

Within LSOS

   

X

X

3.69 MB

Fully polarimetric backscattering coefficients of snow
Snow cover
Snow depth

University of Michigan Ground-Based Microwave Radiometer

Within LSOS

     

X

561 KB

Brightness temperature
Upwelling brightness from trees
Downwelling brightness from trees

Micrometeorological Data at the Local Scale Observation Site (LSOS)

Within LSOS

   

X

X

4.51 MB

Soil temperature
Soil moisture
Soil heat budget
Snow/air temperatures

Snow Measurements at the Local Scale Observation Site (LSOS)

Within LSOS

X

X

X

X

113 KB, plus large photos

Snow depth
Snow water equivalent
Snow density
Snow wetness

Sub-Canopy Energetics at the Local Scale Observation Site (LSOS)

Within LSOS

X

X

X

X

1.36 MB, plus large photos

Canopy characteristics
Incoming radiation
Snow depth
Snow temperature
Soil temperature and heat flux
Meteorological parameters

ISA Main Meteorological Data

Within each ISA and adjacent to LSOS

   

X

X

85.39 MB, plus large photos

Meteorological parameters

ISA Corner Site Meteorological Data

Within each ISA

   

X

X

1 GB, plus photos

Air temperature
Relative humidity
Snow depth
Soil moisture
Soil temperature
Wind speed
Wind direction

ISA Snow Depth Transects and Related Measurements

Within each ISA

X

X

X

X

414 KB, plus large photos; 4.42 GB total

Snow cover
Snow depth
Soil temperature
Surface roughness
Canopy characteristics

ISA Snow Pit Measurements

Browse snow pits

Within each ISA

X

X

X

X

805 KB, plus large photos; 2.19 GB total

Snow density
Snow temperature
Snow stratigraphy
Snow grain size
Snow water equivalent

Vegetation Biophysical Activity at LSOS
(Data not received. Responsible Investigator: Kyle McDonald, JPL)

Within LSOS

X

X

X

X

4 MB

Thermograms of vegetation

ISA Soil Moisture Measurements

Within each ISA and the North Park MSA

X

X

X

X

1 MB

Gravimetric soil moisture

 

Model Data

Local Analysis and Prediction System (LAPS): 4-D Atmospheric Analyses

All LRSA

X

X

X

X

148.3 GB

2-D surface meteorology
3-D upper-air meteorology

NCAR Data Analysis and Numerical Modeling

All LRSA

X

X

X

X

322 GB

3-D meteorological analysis

NOAA FSL Rapid Update Cycle 20 km (RUC-20) Dataset

All LRSA

   

X

X

600 GB

Short-range numerical meteorological parameters

Rapid Update Cycle 40km (RUC-40) Model Output Reduced Data Set

All LRSA

   

X

X

71.44 MB

Meteorological forecasting parameters

Land Data Assimilation System (LDAS) Data

All LRSA

X

X

X

X

6.75 GB

43 model and observation-based meteorological parameters

 
1 Data sets related to CLPX, but not directly part of the experiment.
Data are advertised and described by NSIDC but archived elsewhere.
2 Data collected shortly after IOP4 and in September 2004.
3 Background data collected prior to these flight lines in September 2001.
4 Background data collected prior to these flight lines in September 2002.
5 Data also collected prior to IOP3 in December 2002.

   
IOP Campaigns IOP Campaign Dates
IOP1 February 2002
IOP2 March 2002
IOP3 February 2003
IOP4 March 2003
   
   
Acronyms Description
CLPX Cold Land Processes Experiment
IOP Intensive Observation Period
ISA Intensive Study Area
LRSA Large Regional Study Area
LSOS Local Scale Observation Site
MSA Meso-cell Study Area
   

 

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