Nickitas Georgas, John Miller, Stevens Institute of Technology
20130520
Hudson Physical Forces Model
1.
vector digital data
Physical Forces Impacting the Hudson River Shoreline
2. Water Levels, Currents, and Surface Wind Waves
Hoboken, NJ
Stevens Insitute of Technology
Server=gis-serv; Service=5150; User=gisview; Version=SDE.DEFAULT
Compilation of simulated riverside water circulation statistics from a high-resolution numerical model along the tidal Hudson River for the year 2010.
Characterization of the physical environment (in this case, water levels, currents, vertical current stresses and mixing, and surface wind waves) impacting the Hudson River shoreline. This dataset was created for the Hudson River Sustainable Shorelines Project which has five objectives: 1) characterize present and future estuary and shoreline conditions; 2) determine ecological, engineering, and economic trade-offs of shoreline management options; 3) characterize shoreline decision-making arenas and opportunities; 4) demonstrate innovative shorelines and best management practices; 5) create shoreline decision tools and communicate results. The Project is led by the NYSDEC Hudson River National Estuarine Research Reserve (<http://www.hrnerr.org>), in cooperation with the Greenway Conservancy for the Hudson River Valley. Partners in the Project include Cary Institute for Ecosystem Studies, NYSDEC Hudson River Estuary Program and Stevens Institute of Technology. The Project is supported by the National Estuarine Research Reserve System Science Collaborative, a partnership of the National Oceanic and Atmospheric Administration and the University of New Hampshire.
20100101
20101231
ground condition
None planned
-74.044907
-73.681778
42.751755
40.915150
Numerical Model
General Circulation
Statistics of Water Levels
Statistics of Currents
Statistics of Vertical Current Stresses
Statistics of Surface Wind Waves
none
Tidal Hudson River
none
Year 2010
Open Access.
The statistical dataset is based on results from a high-definition numerical model of the Hudson River circulation, forced by a year's worth of in-situ observations. The scope of the present dataset is therefore to provide a detailed picture of the water circulation and surface wave parameters in the tidal Hudson River, based on a numerical model. A validation of the model against 6-minute total water level (tide and surge) observation records at five real time gage locations over the 2010 year revealed Root-Mean-Square (RMS) differences between model and observations ranging from 1 inch near the downstream-most boundary to 7 inches at Albany, NY. The dataset is intended to characterize energy regimes in the Hudson and to assist in the identification of suitable shoreline stabilization alternatives; It is not intended to replace a detailed engineering analysis and design. Use at your own risk.
Nickitas Georgas
Stevens Insittute of Technology
Senior Research Engineer
mailing and physical address
Davidson Laboratory
711 Hudson Street
Hoboken
NJ
07030
USA
(201) 216-8218
(201) 216-8214
ngeorgas@stevens.edu
The numerical model was constucted, run, and its output analyzed at Stevens Institute of Technology.
Numerical model bathymetry was based on a complilation of the most recent bathymetric and topographic surveys of the Hudson available in 2011, using geodetic NAVD88 as the bathymetric datum. Bathymetric and topographic datasets from FEMA and bathymetric datasets from NYSDEC were merged and used.
Observed 6-minute total water levels at the River's southern mouth in New York Harbor were based on NOS data. Observed watershed-area-adjusted 15-minute locally distributed river inflows from the Hudson and its tributaries north of the Troy Dam and at tributary heads-of-tide along its tidal coastline were based on USGS data.
Monthly estimates of distributed water treatment plant effluents at main outfall locations and monthly estimates of distributed power plant inflow and outflow at locations of intakes and outfalls were based on US EPA Clearinghouse data.
Wind and barometric pressure forcing acting on the Hudson River's water surface was based on NCEP analysis blending numerical meteorological models and observations.
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.3.1.3500
This dataset is based on a highly detailed numerical model run of the physical water circulation in the tidal Hudson River during the year 2010, forced with observed data or with engineering estimates based on observed data. Like any numerical model, it is not a perfect description of what occured in the waters of the Hudson or along its coastline in 2010.
The data set covers the entire estuary from Yonkers to Troy
The numerical model is based on solving the physical Navier-Stokes equations of motion and conservation of mass on a curvilinear finite difference (cell) grid. For this study, a grid used to operationally forecast coastal water circulation for a much more extended 7-US-state area (www.stevens.edu/NYHOPS) was refined to 68m average resolution for the Hudson waters from Yonkers, NY to Troy, NY.
Time series of water parameters were extracted at each model cell, and represent the spatially-averaged simulated conditions over that cell.
Stevens Institute of Technology has been running an operational forecast model, called NYHOPS (www.stevens.edu/NYHOPS), since 2006, forecasting water levels, 3D currents, waves, and colored dissolved organic matter (CDOM) for the coastal waters of seven US states 72hrs into the future. The numerical model is based on solving the physical Navier-Stokes equations on a curvilinear grid. The operational model grid?s horizontal resolution includes the NY/NJ Harbor Estuary, as well as the tidal waters of the Hudson River 240km north of Manhattan to the Federal Dam at Troy. The model, built and maintained at Stevens, after a rigorous NOAA-OFS(Operational Forecast System)-metrics-based validation process, is operationally used by NWS for storm surge warnings, USCG for SAR operations, NOAA OR&R for fate and transport, and is the operational model component of the NOAA IOOS for the NY/NJ Harbor and surrounding waters.
Beginning in 2011, a new, higher resolution numerical model grid for the Hudson has been constructed. The new grid has 68m average resolution for the Hudson waters from Yonkers, NY to Troy, NY. It resolves to a very good extent all of the Hudson?s waters to the Hudson River coastline (as available in the NYSDEC-GIS-Clearinghouse) as well as the river?s tributaries to their head of tide. Model bathymetry is based on the most recent available bathymetric and topographic surveys of the area, and uses geodetic NAVD88 as the bathymetric datum. The new tidal Hudson model was set up and ran for the year 2010, providing output every half an hour at each of 58,452 locations. It was forced with observed 6-minute total water levels at the River?s southern mouth, observed watershed-area-adjusted 15-minute locally distributed river inflows from the Hudson and its tributaries north of the Troy Dam and at tributary heads-of-tide along its tidal coastline, monthly estimates of distributed water treatment plant effluents at main outfall locations, monthly estimates of distributed power plant inflow and outflow at locations of intakes and outfalls, and meteorological analysis surface winds and barometric pressure forcing. The recently completed model run was validated against observed water levels at 7 real-time stations with observations in 2010 with a mean total water level (tidal and surge) RMSE of about 3 inches.
The model was used to reconstruct the time-and-space-varying water circulation within the River. The numerical model code solved the hydrodynamic equations of water motion and mass conservation based on application of observed tidal, hydrological, and meteorological forces that moved the water in the river during the year 2010. In the larger scope of the Hudson River Sustainable Shorelines Project, the model results are going to be used to characterize the physical environment (in this case, expected variation of water levels, wind waves, and currents) impacting the Hudson River shoreline. Therefore, after the numerical model runs were completed, model results were statistically analyzed and geo-referenced at over 50,000 locations to provide a gridded waterside physical forces climatology: the spatial and temporal variation of total water levels (tides and oceanic and hydrological surge), currents, vertical current shear, mixing, and wind waves along the shoreline and channels are described by the local normal and probability distributions of these parameters at each cell of the model?s high-resolution grid.
The statistical dataset is derived from a highly detailed numerical model run of the physical water circulation in the tidal Hudson River during the year 2010, forced with observed data or with engineering estimates based on observed data. Like any numerical model, it is not a perfect description of what occurred in the waters of the Hudson or along its coastline in 2010.The scope of the present dataset is therefore to provide a detailed picture of the water circulation and surface wave parameters in the tidal Hudson River, based on a numerical model. A validation of the model against 6-minute total water level (tide and surge) observation records at five real time gage locations over the 2010 year revealed Root-Mean-Square (RMS) differences between model and observations ranging from 1 inch near the downstream-most boundary to 7 inches at Albany, NY. The dataset is intended to characterize energy regimes in the Hudson and to assist in the identification of suitable shoreline stabilization alternatives; It is not intended to replace a detailed engineering analysis and design. Use at your own risk.
The ESRI GIS shape-file layer includes the following tabulated information at each of 58,452 locations:
1. Longitude and Latitude of numerical model cell's centroid. Degrees East and North, respectively.
2. Water Level (values in feet): Minimum, Mean, Maximum, Standard Deviation, and the following empirical percentiles: 1%, 5%, 10%, 25%, 50% (median), 75%, 90%, 95% and 99%.
3. Eastward and Northward Depth-Averaged Current Velocity Components (values in knots): Minimum, Mean, Maximum, Standard Deviation, and the following empirical percentiles: 1%, 5%, 10%, 25%, 50% (median), 75%, 90%, 95% and 99%.
4. Depth-Averaged Current Speed (values in knots): Mean, Maximum, Standard Deviation, and the following empirical percentiles: 50% (median), 75%, 90%, 95% and 99%.
5. Bottom Shear Velocity Squared (values in inches squared per second squared): Mean, Maximum, Standard Deviation, and the following empirical percentiles: 50% (median), 75%, 90%, 95% and 99%.
6. Maximum Vertical Turbulent Mixing in East-West and North-South Directions (values in inches per second squared): Mean, Maximum, Standard Deviation, and the following empirical percentiles: 50% (median), 75%, 90%, 95% and 99%.
7. Maximum Vertical Current Shear in East-West and North-South Directions (values in Hertz): Mean, Maximum, Standard Deviation, and the following empirical percentiles: 50% (median), 75%, 90%, 95% and 99%.
8. Significant Wind Wave Height (values in feet): Mean, Maximum, Standard Deviation, and the following empirical percentiles: 50% (median), 75%, 90%, 95% and 99%.
9. Wind Wave Period (values in second): Mean, Maximum, Standard Deviation, and the following empirical percentiles: 50% (median), 75%, 90%, 95% and 99%.
2012
Vector
G-polygon
58452
Universal Transverse Mercator
18
0.999600
-75.000
0.000
500000.00
0.00
coordinate pair
0.0100
0.0100
meters
D_WGS_1984
WGS_1984
6378137.000000
298.257224
NA
0.000100
NA
Explicit elevation coordinate included with horizontal coordinates
Hudson_Physical_Forces_Model
fluid characteristics of the Hudson River Estuary that produce forces that might act on objects in the estuary.
Stevens Institute of Technology
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Longitude
Longitude of model cell's centroid. Degrees East.
Stevens Institute of Technology
-74.043689
-73.682368
Latitude
Latitude of model cell's centroid. Degrees North.
Stevens Institute of Technology
40.915574
42.751456
WLmin
Water Level. Minimum Simulated Value. Feet.
Stevens Institute of Technology
-4.045
-2.884
WLave
Water Level. Average Simulated Value. Feet.
Stevens Institute of Technology
0.321
1.681
WLmax
Water Level. Maximum Simulated Value. Feet.
Stevens Institute of Technology
4.754
13.98
WLstd
Water Level. Standard Deviation of simulated values. Feet.
Stevens Institute of Technology
1.033
2.071
WL01
Water Level. Lower 1%. Simulated. Feet.
Stevens Institute of Technology
-2.281
-1.421
WL05
Water Level. Lower 5%. Simulated. Feet.
Stevens Institute of Technology
-1.762
-0.984
WL10
Water Level. Lower 10%. Simulated. Feet.
Stevens Institute of Technology
-1.457
-0.702
WL25
Water Level. Lower 25%. Simulated. Feet.
Stevens Institute of Technology
-0.804
0.102
WL50
Water Level. Median, 50%. Simulated. Feet.
Stevens Institute of Technology
0.335
1.614
WL75
Water Level. Lower 75%. Simulated. Feet.
Stevens Institute of Technology
1.302
2.861
WL90
Water Level. Lower 90%. Simulated. Feet.
Stevens Institute of Technology
1.883
4.022
WL95
Water Level. Lower 95%. Simulated. Feet.
Stevens Institute of Technology
2.231
5.24
WL99
Water Level. Lower 99% (Highest 1%). Simulated. Feet.
Stevens Institute of Technology
2.927
8.354
UDmin
Eastward Depth-Averaged Current Velocity. Minimum Simulated Value. Knots.
Stevens Institute of Technology
-3.588
0.008
UDave
Eastward Depth-Averaged Current Velocity. Average Simulated Value. Knots.
Stevens Institute of Technology
-0.814
0.405
UDmax
Eastward Depth-Averaged Current Velocity. Maximum Simulated Value. Knots.
Stevens Institute of Technology
-0.01
4.556
UDstd
Eastward Depth-Averaged Current Velocity. Standard Deviation of simulated values. Knots
Stevens Institute of Technology
0
0.794
UD01
Eastward Depth-Averaged Current Velocity. Lower 1%. Simulated. Knots.
Stevens Institute of Technology
-2.644
0.049
UD05
Eastward Depth-Averaged Current Velocity. Lower 5%. Simulated. Knots.
Stevens Institute of Technology
-1.895
0.06
UD10
Eastward Depth-Averaged Current Velocity. Lower 10%. Simulated. Knots.
Stevens Institute of Technology
-1.51
0.072
UD25
Eastward Depth-Averaged Current Velocity. Lower 25%. Simulated. Knots.
Stevens Institute of Technology
-1.05
0.264
UD50
Eastward Depth-Averaged Current Velocity. Median, 50%. Simulated. Knots.
Stevens Institute of Technology
-0.692
0.418
UD75
Eastward Depth-Averaged Current Velocity. Lower 75%. Simulated. Knots.
Stevens Institute of Technology
-0.426
0.857
UD90
Eastward Depth-Averaged Current Velocity. Lower 90%. Simulated. Knots.
Stevens Institute of Technology
-0.299
1.011
UD95
Eastward Depth-Averaged Current Velocity. Lower 95%. Simulated. Knots.
Stevens Institute of Technology
-0.229
1.195
UD99
Eastward Depth-Averaged Current Velocity. Lower 99% (Highest 1%). Simulated. Knots.
Stevens Institute of Technology
-0.109
2.699
VDmin
Northward Depth-Averaged Current Velocity. Minimum Simulated Value. Knots.
Stevens Institute of Technology
-4.267
0
VDave
Northward Depth-Averaged Current Velocity. Average Simulated Value. Knots.
Stevens Institute of Technology
-0.939
0.257
VDmax
Northward Depth-Averaged Current Velocity. Maximum Simulated Value. Knots.
Stevens Institute of Technology
-0.029
2.243
VDstd
Northward Depth-Averaged Current Velocity. Standard Deviation of simulated values. Knots.
Stevens Institute of Technology
0
1.084
VD01
Northward Depth-Averaged Current Velocity. Lower 1%. Simulated. Knots.
Stevens Institute of Technology
-3.068
0.006
VD05
Northward Depth-Averaged Current Velocity. Lower 5%. Simulated. Knots.
Stevens Institute of Technology
-2.183
0.012
VD10
Northward Depth-Averaged Current Velocity. Lower 10%. Simulated. Knots.
Stevens Institute of Technology
-1.738
0.029
VD25
Northward Depth-Averaged Current Velocity. Lower 25%. Simulated. Knots.
Stevens Institute of Technology
-1.263
0.122
VD50
Northward Depth-Averaged Current Velocity. Median, 50%. Simulated. Knots.
Stevens Institute of Technology
-0.797
0.167
VD75
Northward Depth-Averaged Current Velocity. Lower 75%. Simulated. Knots.
Stevens Institute of Technology
-0.489
0.879
VD90
Northward Depth-Averaged Current Velocity. Lower 90%. Simulated. Knots.
Stevens Institute of Technology
-0.35
1.337
VD95
Northward Depth-Averaged Current Velocity. Lower 95%. Simulated. Knots.
Stevens Institute of Technology
-0.278
1.541
VD99
Northward Depth-Averaged Current Velocity. Lower 99% (Highest 1%). Simulated. Knots.
Stevens Institute of Technology
-0.185
1.829
SDave
Depth-Averaged Current Speed (Magnitude). Average Simulated Value. Knots.
Stevens Institute of Technology
0
1.028
SDmax
Depth-Averaged Current Speed (Magnitude). Maximum Simulated Value. Knots.
Stevens Institute of Technology
0
4.613
SDstd
Depth-Averaged Current Speed (Magnitude). Standard Deviation of simulated values. Knots.
Stevens Institute of Technology
0
0.676
SD50
Depth-Averaged Current Speed (Magnitude). Median, 50%. Simulated. Knots.
Stevens Institute of Technology
0
1.129
SD75
Depth-Averaged Current Speed (Magnitude). Lower 75%. Simulated. Knots.
Stevens Institute of Technology
0
1.399
SD90
Depth-Averaged Current Speed (Magnitude). Lower 90%. Simulated. Knots.
Stevens Institute of Technology
0
1.91
SD95
Depth-Averaged Current Speed (Magnitude). Lower 95%. Simulated. Knots.
Stevens Institute of Technology
0
2.402
SD99
Depth-Averaged Current Speed (Magnitude). Lower 99% (Highest 1%). Simulated. Knots.
Stevens Institute of Technology
0
3.358
TBave
Bottom Shear Velocity Squared. Average Simulated Value. Inches squared per second squared.
Stevens Institute of Technology
0
1.411
TBmax
Bottom Shear Velocity Squared. Maximum Simulated Value. Inches squared per second squared.
Stevens Institute of Technology
0.001
12.729
TBstd
Bottom Shear Velocity Squared. Standard Deviation of simulated values. Inches squared per second squared.
Stevens Institute of Technology
0
1.703
TB50
Bottom Shear Velocity Squared. Median, 50%. Simulated. Inches squared per second squared.
Stevens Institute of Technology
0
1.195
TB75
Bottom Shear Velocity Squared. Lower 75%. Simulated. Inches squared per second squared.
Stevens Institute of Technology
0
1.722
TB90
Bottom Shear Velocity Squared. Lower 90%. Simulated. Inches squared per second squared.
Stevens Institute of Technology
0
4.448
TB95
Bottom Shear Velocity Squared. Lower 95%. Simulated. Inches squared per second squared.
Stevens Institute of Technology
0
5.587
TB99
Bottom Shear Velocity Squared. Lower 99% (Highest 1%). Simulated. Inches squared per second squared.
Stevens Institute of Technology
0
7.728
UMave
Maximum Vertical Turbulent Mixing in East-West Direction. Average Simulated Value. Inches per second squared.
Stevens Institute of Technology
0
0.2246
UMmax
Maximum Vertical Turbulent Mixing in East-West Direction. Maximum Simulated Value. Inches per second squared.
Stevens Institute of Technology
0
0.2246
UMstd
Maximum Vertical Turbulent Mixing in East-West Direction. Standard Deviation of simulated values. Inches per second squared.
Stevens Institute of Technology
0
0.28023
UM50
Maximum Vertical Turbulent Mixing in East-West Direction. Median, 50%. Simulated. Inches per second squared.
Stevens Institute of Technology
0
0.173
UM75
Maximum Vertical Turbulent Mixing in East-West Direction. Lower 75%. Simulated. Inches per second squared.
Stevens Institute of Technology
0
0.29384
UM90
Maximum Vertical Turbulent Mixing in East-West Direction. Lower 90%. Simulated. Inches per second squared.
Stevens Institute of Technology
0
0.59731
UM95
Maximum Vertical Turbulent Mixing in East-West Direction. Lower 95%. Simulated. Inches per second squared.
Stevens Institute of Technology
0
0.82037
UM99
Maximum Vertical Turbulent Mixing in East-West Direction. Lower 99% (Highest 1%). Simulated. Inches per second squared.
Stevens Institute of Technology
0
1.53302
VMave
Maximum Vertical Turbulent Mixing in North-South Direction. Average Simulated Value. Inches per second squared.
Stevens Institute of Technology
0
0.2351
VMmax
Maximum Vertical Turbulent Mixing in North-South Direction. Maximum Simulated Value. Inches per second squared.
Stevens Institute of Technology
0
2.31338
VMstd
Maximum Vertical Turbulent Mixing in North-South Direction. Standard Deviation of simulated values. Inches per second squared.
Stevens Institute of Technology
0
0.26934
VM50
Maximum Vertical Turbulent Mixing in North-South Direction. Median, 50%. Simulated. Inches per second squared.
Stevens Institute of Technology
0
0.23064
VM75
Maximum Vertical Turbulent Mixing in North-South Direction. Lower 75%. Simulated. Inches per second squared.
Stevens Institute of Technology
0
0.32994
VM90
Maximum Vertical Turbulent Mixing in North-South Direction. Lower 90%. Simulated. Inches per second squared.
Stevens Institute of Technology
0
0.59958
VM95
Maximum Vertical Turbulent Mixing in North-South Direction. Lower 95%. Simulated. Inches per second squared.
Stevens Institute of Technology
0
0.81352
VM99
Maximum Vertical Turbulent Mixing in North-South Direction. Lower 99% (Highest 1%). Simulated. Inches per second squared.
Stevens Institute of Technology
0
1.47766
UZave
Maximum Vertical Current Shear in East-West Direction. Average Simulated Value. 1 per second.
Stevens Institute of Technology
0
0.9408
UZmax
Maximum Vertical Current Shear in East-West Direction. Maximum Simulated Value. 1 per second.
Stevens Institute of Technology
0
4.4127
UZstd
Maximum Vertical Current Shear in East-West Direction. Standard Deviation of simulated values. 1 per second.
Stevens Institute of Technology
0
0.6524
UZ50
Maximum Vertical Current Shear in East-West Direction. Median, 50%. Simulated. 1 per second.
Stevens Institute of Technology
0
0.9494
UZ75
Maximum Vertical Current Shear in East-West Direction. Lower 75%. Simulated. 1 per second.
Stevens Institute of Technology
0
1.4438
UZ90
Maximum Vertical Current Shear in East-West Direction. Lower 90%. Simulated. 1 per second.
Stevens Institute of Technology
0
1.7729
UZ95
Maximum Vertical Current Shear in East-West Direction. Lower 95%. Simulated. 1 per second.
Stevens Institute of Technology
0
2.0874
UZ99
Maximum Vertical Current Shear in East-West Direction. Lower 99% (Highest 1%). Simulated. 1 per second.
Stevens Institute of Technology
0
3.3732
VZave
Maximum Vertical Current Shear in North-South Direction. Average Simulated Value. 1 per second.
Stevens Institute of Technology
0
1.081
VZmax
Maximum Vertical Current Shear in North-South Direction. Maximum Simulated Value. 1 per second.
Stevens Institute of Technology
0
5.0748
VZstd
Maximum Vertical Current Shear in North-South Direction. Standard Deviation of simulated values. 1 per second.
Stevens Institute of Technology
0
0.6657
VZ50
Maximum Vertical Current Shear in North-South Direction. Median, 50%. Simulated. 1 per second.
Stevens Institute of Technology
0
1.1771
VZ75
Maximum Vertical Current Shear in North-South Direction. Lower 75%. Simulated. 1 per second.
Stevens Institute of Technology
0
1.4202
VZ90
Maximum Vertical Current Shear in North-South Direction. Lower 90%. Simulated. 1 per second.
Stevens Institute of Technology
0
1.9182
VZ95
Maximum Vertical Current Shear in North-South Direction. Lower 95%. Simulated. 1 per second.
Stevens Institute of Technology
0
2.2323
VZ99
Maximum Vertical Current Shear in North-South Direction. Lower 99% (Highest 1%). Simulated. 1 per second.
Stevens Institute of Technology
0
3.1944
WHave
Significant Wave Height. Average Simulated Value. Feet.
Stevens Institute of Technology
0.046
0.47
WHmax
Significant Wave Height. Maximum Simulated Value. Feet.
Stevens Institute of Technology
0.253
2.795
WHstd
Significant Wave Height. Standard Deviation of simulated values. Feet.
Stevens Institute of Technology
0.038
0.411
WH50
Significant Wave Height. Median, 50%. Simulated. Feet.
Stevens Institute of Technology
0.033
0.361
WH75
Significant Wave Height. Lower 75%. Simulated. Feet.
Stevens Institute of Technology
0.066
0.682
WH90
Significant Wave Height. Lower 90%. Simulated. Feet.
Stevens Institute of Technology
0.098
1.047
WH95
Significant Wave Height. Lower 95%. Simulated. Feet.
Stevens Institute of Technology
0.118
1.281
WH99
Significant Wave Height. Lower 99% (Highest 1%). Simulated. Feet.
Stevens Institute of Technology
0.171
1.796
WPave
Wave Period. Average Simulated Value. Seconds.
Stevens Institute of Technology
1.091
1.68
WPmax
Wave Period. Maximum Simulated Value. Seconds.
Stevens Institute of Technology
1.773
3.533
WPstd
Wave Period. Standard Deviation of simulated values. Seconds.
Stevens Institute of Technology
0.286
0.535
WP50
Wave Period. Median, 50%. Simulated. Seconds.
Stevens Institute of Technology
1.113
1.663
WP75
Wave Period. Lower 75%. Simulated. Seconds.
Stevens Institute of Technology
1.443
1.883
WP90
Wave Period. Lower 90%. Simulated. Seconds.
Stevens Institute of Technology
1.663
2.213
WP95
Wave Period. Lower 95%. Simulated. Seconds.
Stevens Institute of Technology
1.663
2.433
WP99
Wave Period. Lower 99% (Highest 1%). Simulated. Seconds.
Stevens Institute of Technology
1.773
2.983
SHAPE.AREA
Area of polygon (sq. meters)
ESRI
Area of polygon (sq. meters)
SHAPE.LEN
Length of polygon perimeter (meters)
ESRI
Length of polygon perimeter (meters)
Minimum, average, maximum, and standard deviation values are the classic Gaussian statistics for each variable provided as attributes.
Percentiles of the empirical cumulative distribution function (CDF) at each cell and for each variable are as follows:
1% (lowest 1%), 5%, 10%, 25%, 50% (median), 75%, 90%, 95%, 99% (highest 1%) percentile propabilities.
Minimum values and less than median (50%) percentiles were not calculated or provided for positive-definite values (e.g. current speed).
Nickitas Georgas
NYS Office of Information Technology Services, GeoSpatial Section
mailing and physical address
625 Broadway
3rd Floor
Albany
NY
12233-2750
(518) 402-9860
EnterpriseGIS@gw.dec.state.ny.us
Downloadable Data
New York State Department of Environmental Conservation provides these geographic data "as is." New York State Department of Environmental Conservation makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. New York State DEC further makes no warranty, either expressed or implied, regarding the condition of the product or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on a computer system at New York State Department of Environmental Conservation, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. New York State Department of Environmental Conservation shall not be held liable for improper or incorrect use of the data described and/or contained herein.
ArcGIS
9.3.1
DVD-ROM
7.581
CD-ROM
ArcGIS
None
20130520
Stevens Institute of Technology
Nickitas Georgas
Senior Research Engineer
mailing and physical address
Davidson Laboratory
711 Hudson Street
Hoboken
NJ
07030
(201) 216-8218
(201) 216-8214
ngeorgas@stevens.edu
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile