LPRM/TMI/TRMM Daily L3 Night Surface Soil Moisture, Ancillary Params, and QC
Entry ID:
GES_DISC_LPRM_TMI_SOILM3_NT_V001
|
[
Get Data
]
[
Update this Record
]
|
Updating this record requires registration.
|
Summary
Abstract:
This Level 3 (gridded) data set’s land surface parameters, surface soil moisture, land surface (skin) temperature, and vegetation water content, are derived from passive microwave remote sensing data from the Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI), using the Land Parameter Retrieval Model (LPRM). There are two files per day, one day and one night, archived as two ... different products. This document is for the nighttime product. The data set covers the period from December 1997 to present, at a spatial resolution of 0.25 degree. The data are stored in netCDF format.
The LPRM is based on a forward radiative transfer model to retrieve surface soil moisture and vegetation optical depth. The land surface temperature is derived separately from TMI's Ka-band (37 GHz). A unique feature of this method is that it can be applied at any microwave frequency, making it very suitable to exploit all the available passive microwave data from various satellites.
Input data are from the TMI Brightness Temperatures (1B-11) product, nighttime passes, as processed using LPRM (i.e., LPRM/TMI/TRMM L2 product, GES_DISC_LPRM_TMI_SOILM2_V001). 
Multimedia Sample
View full image
Caption:
LPRM/TMI volumetric soil moisture X-band
|
|
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
| |
N: 40.0
|
|
S: -40.0
|
|
E: 180.0
|
|
W: -180.0
|
|
Data Set Citation
Dataset Originator/Creator:
Vrije Universiteit Amsterdam and NASA GSFC
Dataset Title:
LPRM/TMI/TRMM Daily L3 Night Surface Soil Moisture, Ancillary Params, and QC
Dataset Release Date:
04.16.2012
Dataset Release Place:
Greenbelt, MD U.S.A.
Dataset Publisher:
Goddard Earth Sciences Data and Information Services Center (GES DISC)
Version:
1
Online Resource:
ftp://hydro1.sci.gsfc.nasa.gov/data/s4pa/WAOB/LPRM_TMI_NT_SOILM3.001/
Data Resolution
Latitude Resolution:
25 km
Longitude Resolution:
25 km
Horizontal Resolution Range:
10 km - < 50 km or approximately .09 degree - < .5 degree
Temporal Resolution:
Daily
Temporal Resolution Range:
Daily - < Weekly
Quality
ATTRIBUTE ACCURACY REPORT: These data have been quality controlled through computer and manual edits at different times with different degrees of success. In general, the quality of the data has improved as more sophisticated computer edits have been implemented, especially since 1998. Data prior to 1982 were converted from existing files, then placed in the current format after undergoing only a ... gross value check. In November 1993 the entire historical period of record was processed, using Red Ezell's "Vahlidd" software. Another round of quality control in November 2000 on the DSI-3200 data set, using Charles Phillips' "rehab" software increased that data set's quality still more. This quality control removed or corrected badly formatted records, deleted duplicate records, resolved problems with records with duplicate ID PORTIONS, did data value range checks and standardized the formats for accumulation and "days with weather". DSI-3210 data received a new round of quality control in February 2006, using a variation of Charles Phillips' "rehab" software customized for DSI-3210. The quality control was similar to what was done for DSI-3200. Ingest quality control since 1998 is good. The data are subjected to internal consistency checks, compared against climatological limits, checked serially, and evaluated against surrounding stations. Quality control "flags" are appended to each element value to show how they fared during the edit procedures and to indicate what, if any, action was taken. The "days with weather" data type, found in these data sets, is fair to poor, depending on the station. It cannot be used with any measure of confidence. Principal climatological stations operating 24 hours a day are expected to be the most reliable source of "days with weather". Reporting of this element by cooperative observers is not a requirement and criteria for reporting are not definitive. Most stations do not record this information.
LOGICAL CONSISTENCY REPORT: Unknown
COMPLETENESS REPORT: Completeness information not available.
LINEAGE/PROCESS STEP:
PROCESS DESCRIPTION: Not derived from another source
PROCESS DATE: Unknown
Access Constraints
ACCESS CONSTRAINTS: None
DISTRIBUTION LIABILITY: Every effort has been made to ensure that these data are accurate and reliable within the limits of current NOAA quality control procedures. NOAA can only certify that the data provided to its customers is an authentic copy of the records which were accepted for inclusion in NOAA archives. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Use Constraints
None
Data Set Progress
COMPLETE
Distribution
Distribution Format:
ArcIMS
Fees:
Please See Summary
Distribution Format:
Open Geospatial Consortium Web Map Service (WMS)
Fees:
Please See Summary
Distribution Format:
Open Geospatial Consortium Web Feature Service (WFS)
Fees:
Please See Summary
Personnel
Role:
TECHNICAL CONTACT
Phone:
828-271-4800
Fax:
828-271-4876
Email:
ncdc.orders at noaa.gov
Contact Address:
151 Patton Avenue, Room 120
City:
Asheville
Province or State:
NC
Postal Code:
28801-5001
Country:
USA
Role:
DIF AUTHOR
Phone:
828-271-4800
Fax:
828-271-4876
Email:
ncdc.metadata at noaa.gov
Contact Address:
151 Patton Avenue
Room 468
City:
Asheville
Province or State:
North Carolina
Postal Code:
28801-5001
Country:
USA
Creation and Review Dates
DIF Creation Date:
2007-10-23
Last DIF Revision Date:
2009-04-20
|
[
Update this Record
]
|
Updating this record requires registration.
|
|
