NASA Home Page Goddard Space Flight Center Home Page
NASA Logo - Goddard Space Flight Center   + Visit NASA.gov
a directory of Earth science data and services Global Change Master Directory Web site
header 2 bullet Links bullet FAQ bullet Contact Us bullet Site Map
Home Data Sets Data Services Learn about GCMD_legacy's portal collaborations. Add new dataset or dataservice records to GCMD_legacy What's New Participate Calendar About GCMD_legacy
 
Thumbnail Icon [Personnel: Last_Name='STEVENS', Middle_Name='B.', First_Name='TYLER']

Refine by Category
 
Refine by Full Text

 

 

2110 Titles Match Your Query
Showing 1 through 50 of 2110 Next
1. 3D-Mapping of NWS Reflectivity Data [3DRadPlot]
3DRadPlot was originally developed to compare NWS NEXRAD volume reflectivity data to drop size distribution data acquired from a cluster of disdrometers. In this work, particular attention was given ...

2. SIGMA0 - A Tool for Analyzing JPL Airsar Data and Byte Images [SIGMA0]
SIGMA0 is an interactive tool which allows you to display and analyze radar data in the JPL AIRSAR compressed stokes data format. SIGMA0 will also read byte images. The JPL AIRSAR system is a multi-polarimetric ...

3. A computerized method of base-flow-record estimation [USGS_PART]
The computer program PART: A computerized method of base-flow-record estimation uses stream flow partitioning to estimate a daily record of ground-water discharge under the stream flow record. The ...

4. A two-constituent solute transport model for ground water having variable density [USGS_MOCDENSE]
The two-constituent solute transport model for ground water having variable density model simulates solute transport in flowing ground water. It is applicable to two-dimensional, cross-sectional ...

5. ANNIE: Interactive Hydrologic Analyses and Data Management [USGS_ANNIE]
ANNIE is a program designed to help users interactively store, retrieve, list, plot, check, and update spatial, parametric, and time-series data for hydrologic models and analyses. Data are stored ...

6. ASTER Lat/Lon Adjustment Tool [NASA_JPL_ASTERWEB_LATLON]
Geographic coordinates for each ASTER scene are stored in various places in the HDF and *.met files. Latitude/longitude values are assigned to certain image pixels, based on knowledge of spacecraft ...

7. Alkalinity Calculator [USGS_ALK]
The Alkalinity Calculator will analyze the titration curve and calculate the alkalinity or acid neutralizing capacity (ANC) of the sample using one or more of several different methods. Alkalinity ...

8. An Interactive Code For Modeling Net Geochemical Reactions Along a Flow Path [USGS_NETPATH]
NETPATH is an interactive Fortran 77 computer program used to interpret net geochemical mass-balance reactions between an initial and final water along a hydrologic flow path. Alternatively, NETPATH ...

9. An Online Interactive Map Service for Displaying Ground Water Conditions in Arizona [USGS_azgwconditions]
Monitoring the availability of the nation's ground-water supplies is of critical importance to planners and water managers. The general public also has an interest in understanding the status of ground-water ...

10. BIOMOC - A Multispecies Solute-Transport Model with Biodegradation [USGS_BIOMOC]
BIOMOC is a two-dimensional model that can simulate the transport and biotransformation of multiple reacting solutes. The program is general and flexible, allowing for any combination ...

11. Baseflow Filter Program [BFP]   PARENT SERF
The baseflow filter estimates baseflow and groundwater recharge from streamflow records using the methodology outlined in Automated methods for estimating baseflow and groundwater recharge from streamflow ...

12. CALIBRAT Geodetic Software [NOAA_NGS_CALIBRAT]
The CALIBRAT program is used to determine the scale and constant corrections for electronic distance measuring instruments by making measurements over previously determined base lines. The formulas ...

13. CALIPSO Data Read Software [LARC_calipso_read_software_routines]
Introduction: The Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite will provide new insight into the role that clouds and atmospheric aerosols play in regulating ...

14. CALIPSO Search and Sub-setting Data Application [LARC_CALIPSO_SEARCH]
The new CALIPSO Search and Sub-setting data application enables a more sophisticated approach to selecting and ordering CALIPSO lidar data by date, time and geolocation. This web application is a ...

15. Chemical Modeling of Acid Waters [USGS_WATEQ4F]
WATEQ4F is a chemical speciation code for natural waters. It uses field measurements of temperature, pH, Eh, dissolved oxygen and alkalinity, and the chemical analysis of a water sample as input and ...

16. Conduit Flow Process for MODFLOW-2005 [USGS_CFP]
The conduit flow process for MODFLOW-2005 (CFP) has the ability to simulate turbulent or laminar ground-water flow conditions by: (1) coupling the traditional ground-water flow equation with formulations ...

17. Coupled Ground-water and Surface-water FLOW model [USGS_GSFLOW]
GSFLOW is a coupled Ground-water and Surface-water FLOW model based on the integration of the U.S. Geological Survey Precipitation-Runoff Modeling System (PRMS, Leavesley and others, 1983) and the ...

18. DFLOW: A Tool for Low Flow Analysis [EPA_dflow]
DFLOW: A Tool for Low Flow Analysis, is a Windows-based tool developed to estimate user selected design stream flows for low flow analysis and water quality standards. This latest version can be readily ...

19. DSS Environment for Modeling of Atmospheric Nutrient Deposition [DEMAND]
DSS Environment for Modeling of Atmospheric Nutrient Deposition (DEMAND) is a NASA-funded project utilizes recent NASA Earth Science Research Results (NASA ESRR) to aid in decision making processes ...

20. Downsizer—A Graphical User Interface-Based Application for Browsing, Acquiring, and Formatting Time-Series Data for Hydrologic Modeling [USGS_Downsizer]
The U.S. Geological Survey Downsizer is a computer application that selects, downloads, verifies, and formats station-based time-series data for environmental-resource models, particularly the Precipitation-Runoff ...

21. Flood Frequency Analysis Based on Bulletin 17B [USGS_PeakFQ]
Program PeakFQ provides estimates of instantaneous annual-maximum peak flows for a range of recurrence intervals, including 1.5, 2, 2.33, 5, 10, 25, 50, 100, 200, and 500 years (annual-Exceedance ...

22. Flow Analysis Software Toolkit (FAST) [FAST]
The Flow Analysis Software Toolkit, FAST, is a software environment for visualizing data. FAST is a collection of separate programs (modules) that run simultaneously and allow the user to examine ...

23. FourPt - An Unsteady, One-Dimensional, Open-Channel Flow Model [USGS_FourPt]
FOURPT is a numerical model for simulating unsteady, one-dimensional flow in networks of open channels. Options particularly useful in training or prototyping include selection of governing equations ...

24. Full EQuations Model [USGS_FEQ]
The Full EQuations Model is a computer model for simulation of one-dimensional unsteady flow in open channels and through control structures. The structure of the program is designed to follow the ...

25. Geoid Height Calculator [UNAVCO_GEIOD]
The Geoid height calculator is an online tool that calculates a geoid height correction at a specified location on Earth using one or more gravity model. Specific Information on the EGM96 Model and ...

26. Graphical Constituent Loading Analysis System (GCLAS) [USGS_GCLAS]
The Graphical Constituent Loading Analysis System aids in the computation of daily constituent loads transported in streamflow. Due to the relative paucity with which most water-quality data are ...

27. Great Lakes Water Level Dashboard [NOAA_glwld]
The Great Lakes Water Level Dashboard was designed to help users access and visualize monthly Great Lakes water level data and forecasts across a variety of time scales. The tool features a sliding ...

28. Gypsy Moth Penology Model [USDA_FS_GMPHEN]
The GMPHEN model predicts the growth of gypsy moth from egg eclosion to adult emergence from the pupal stage. In this DOS program, users are provided with a menu structured access system, permitting ...

29. HUFPrint: A tabulation and visualization utility for the Hydrogeologic-Unit Flow (HUF) Package of MODFLOW [USGS_HUFPrint]
HUFPrint is a computer program that extracts and displays information about model structure and hydraulic properties from the input data for a model built using the Hydrogeologic-Unit Flow (HUF) Package ...

30. Horizontal Time-Dependent Positioning (HTDP) [NOAA_NGS_HTDP]
This horizontal time-dependent positioning software program allows users to predict horizontal displacements and/or velocities at locations throughout the United States and its territories. This software ...

31. Hydrologic Analysis and Modeling Toolbox [hamtoolbox]
The Hydrologic Analysis and Modeling Toolbox is a collection of program modules to support the analysis and modeling of rainfall-runoff dynamics of watersheds.

32. Hytool - A Matlab Toolbox for the Interpretation of Hydraulic Tests in Wells [Hytool]
Hytool is a matlab toolbox for the interpretation of hydraulic tests in wells. The toolbox contains analytical solutions used to describe groundwater flow around wells, and functions for importing, ...

33. Input and Output for a Watershed Data Management (WDM) file [USGS_IOWDM]
IOWDM is designed to reformat data to and from a WDM file. Data in selected WATSTORE card-image formats and flat file formats can be added to a WDM file. A WDM file is a binary, direct-access file ...

34. KTRLine: Kendall-Theil Robust Line [USGS_KTRLine]
The Kendall-Theil Robust Line software (KTRLine—version 1.0) is a Visual Basic program that may be used with the Microsoft Windows operating system to calculate parameters for robust, nonparametric ...

35. Lake Level Viewer [NOAA_llv]
This tool helps users visualize lake level changes that range from six feet above to six feet below historical long-term average water levels in the Great Lakes, along with potential shoreline and ...

36. Large Area Runoff Simulation Model [LARSIM]
LARSIM is an acronym for Large Area Runoff Simulation Model. It is a hydrologic model, which describes continuous runoff processes in catchments and river networks. This project provides a graphical ...

37. Load Estimator (LOADEST): A Program for Estimating Constituent Loads in Streams and Rivers [USGS_LOADEST]
LOAD ESTimator (LOADEST) is a FORTRAN program for estimating constituent loads in streams and rivers. Given a time series of streamflow, additional data variables, and constituent concentration, LOADEST ...

38. Luca - Let Us Calibrate [USGS_LUCA]
Luca (Let us calibrate) is a multiple-objective, stepwise, automated procedure for hydrologic model calibration and the associated graphical user interface (GUI). Luca is a wizard-style user-friendly ...

39. Lucid - Knowledge Management Software Applications [LucID]
Lucid tools are powerful and highly flexible knowledge management software applications designed to help users with identification or diagnostic tasks. Lucid software is a special type of expert ...

40. MEASERR - A Program for Determination of Error in Individual Discharge Measurements [USGS_MEASERR]
The uncertainty, or standard error, for individual measurements of stream discharge is computed based on a root-mean-square error analysis of the individual component errors. The component ...

41. MFI2005 - Data Input (Entry) Program [USGS_MFI2005]
MFI2005 is a data input (entry) program for the U.S. Geological Survey modular three-dimensional finite-difference ground-water model called MODFLOW-2005. Data for MODPATH, a particle tracking program ...

42. MISR ENVI Tool [MISR_ENVI]
The misr_envi tool imports MISR Level 1B2 Ellipsoid and Terrain stacked block data into ENVI. The data are automatically geolocated and the band information is correctly interpreted, improving the ...

43. MODFLOW-CDSS, a Version of MODFLOW-2005 with Modifications for Colorado Decision Support Systems [USGS_MODFLOW-CDSS]   PARENT SERF
MODFLOW-CDSS is a three-dimensional, finite-difference groundwater-flow model based on MODFLOW-2005, with two modifications. The first modification is the introduction of a Partition Stress Boundaries ...

44. MODFLOW-USG: An Unstructured Grid Version of MODFLOW for Simulating Groundwater Flow and Tightly Coupled Processes Using a Control Volume Finite-Difference Formulation [USGS_mfusg]   PARENT SERF
A new version of MODFLOW, called MODFLOW-USG (for UnStructured Grid), was developed to support a wide variety of structured and unstructured grid types, including nested grids and grids based on prismatic ...

45. MODOPTIM: A General Optimization Program for Ground-Water Flow Model Calibration and Ground-Water Management with MODFLOW [USGS_MODOPTIM]
MODOPTIM is a non-linear ground-water model calibration and management tool that simulates flow with MODFLOW-96 as a subroutine. A weighted sum-of-squares objective function defines optimal solutions ...

46. ModelMate - A Graphical User Interface (GUI) for Model Analysis [USGS_ModelMate]
ModelMate is a graphical user interface designed to facilitate use of model-analysis programs with models. This initial version of ModelMate supports one model-analysis program, UCODE_2005, and one ...

47. ModelMuse - A Graphical User Interface for MODFLOW-2005, PHAST, MODPATH, and ZONEBUDGET [USGS_ModelMuse]
ModelMuse is a graphical user interface (GUI) for the U.S. Geological Survey (USGS) models MODFLOW–2005 and PHAST. This software package provides a GUI for creating the flow and transport input file ...

48. Modular Finite-Element Model for Areal and Axisymmetric Ground-Water Flow Problems [USGS_MODFE]
This MODular, Finite-Element digital-computer program (MODFE) was developed to provide solutions to ground-water-flow problems based on the governing equations that describe two-dimensional ...

49. Nitrogen and Phosphorus Pollution Data Access Tool (NPDAT) [EPA_npdat]
The Nitrogen and Phosphorus Pollution Data Access Tool (NPDAT) enables users to view and download nitrogen and phosphorus pollution data from a variety of databases. The NPDAT utilizes shared Web ...

50. North American Datum Conversion Utility (NADCON) [NOAA_NGS_NADCON]
The North American Datum Conversion Utility (NADCON) transforms latitude and longitude coordinate values between two geodetic coordinate systems known as “datums.” To do so, NADCON uses a pair of ...

Showing 1 through 50 of 2110 Next
USA dot gov - The U.S. Government's Official Web Portal NASA
Webmaster:  Monica Lyles
Responsible NASA Official:  Dr. Stephen Wharton
Last Updated:  January 2015