Hudson River (HUD) NERR Meteorological Metadata January 2003 - December 2003 Latest Update: September 2, 2004

Meteorological monitoring is conducted at 26 National Estuarine Research Reserves (NERR) from at least one location within or adjacent to the reserve. Data are collected every 5 seconds and averages are produced from this data at quarterly (15 minutes), hourly (60 minutes) and daily (1440 minutes) intervals. The parameters collected within these intervals are: averages, maximums and minimums of air temperature, relative humidity, barometric pressure, wind speed, wind direction, precipitation and photosynthetically active solar radiation.

Research objectives The objective of this study is to monitor the meteorological conditions at the Tivoli Bays component site of the Hudson River National Estuarine Research Reserve. Measurements of air temperature, relative humidity, barometric pressure, precipitation, photosynthetically active radiation, and wind speed and direction are taken throughout the year at the Tivoli Bays Field Station. A water quality monitoring program has been ongoing since 1991 at this component site, and the meteorological monitoring provides ancillary data. This helps us to better understand the relationships between the atmospheric conditions and aquatic environments at this site.SUPPLEMENTAL INFORMATION: Associated researchers and projects The Hudson River NERR water quality-monitoring program examines the physical and chemical constituents of the tributary waters and the tidal waters of the freshwater tidal marshes at the Tivoli Bays component site. Measurements include seston, dissolved oxygen, alkalinity, pH, temperature, salinity, conductivity, and concentrations of nitrate, phosphate, sulfate, and chloride. These data are used in conjunction with the meterological monitoring data to help us better understand the relationships between the atmospheric and aquatic environments at this site. Associated researchers with work at Tivoli Bays include scientists from the Institute of Ecosystem Studies, Millbrook, NY, Yale School of Forestry and Environmental Studies, New Haven, CT, and Rensselaer Polytechnic Institute, Troy, NY. Other remarks/notes LiCor (PAR): Prior to the installation of the new NERR_4.CSI program on 10/23/2003, all PAR values less than 0 were altered in the raw data to read 0. These values may indicate an incorrect multiplier, calibration problems, or a sensor malfunction. Because these values are changed in the raw data, we cannot confirm that they are all valid data points. After installation of the new program, queries in EQWin were constructed to identify PAR values below ?0.5, because values between 0 and ?0.5 typically occur at night and are within the normal operating range of the sensor. Values less than ?0.5 are considered anomalous, and are investigated further. Values between 0 and ?0.5 that occur during the day are evident from graphs of the PAR data and are considered anomalous and investigated further. Relative Humidity: Prior to the installation of the new NERR_4.CSI program on 10/23/2003, all values over 100% were altered in the raw data to read 100%. These values may indicate super saturated air, calibration problems, or a sensor malfunction. Because these values are changed in the raw data, we cannot confirm that they are all valid data points. After installation of the new program, queries in EQWin were constructed to identify relative humidity readings greater than 100%. Values greater than 100% are considered anomalous and are investigated further. The following data are Daily Precipitation Totals for each month: January 2003 Calendar Day Daily Precipitation Totals (mm) 1 24.892 2 5.080 3 9.398 4 22.860 5 3.048 6 1.016 10 .254 26 .254 Monthly Total 66.8 February 2003 Calendar Day Daily Precipitation Totals (mm) 3 1.016 4 8.382 10 1.016 17 19.812 18 11.430 22 18.034 23 9.144 Monthly Total 68.8 March 2003 Calendar Day Daily Precipitation Totals (mm) 2 9.906 5 3.048 6 3.302 13 4.318 14 1.778 15 .254 20 30.226 21 .508 26 4.064 28 .254 29 25.654 30 1.524 Monthly Total 84.8 April 2003 Calendar Day Daily Precipitation Totals (mm) 3 2.032 4 .508 5 6.350 7 3.556 8 2.794 11 4.572 21 .254 22 5.842 26 11.176 May 2003 Calendar Day Daily Precipitation Totals (mm) 1 3.556 2 3.048 5 .508 7 1.016 8 2.540 9 .254 11 11.176 12 .254 13 .508 21 7.366 22 .254 23 1.524 24 2.540 26 38.354 27 1.270 28 2.794 30 1.270 31 24.384 Monthly Total 102.6 June 2003 Calendar Day Daily Precipitation Totals (mm) 1 16.764 6 4.572 7 15.748 11 2.032 12 41.148 13 5.334 14 .254 18 2.286 20 2.540 21 8.382 22 22.352 29 .254 Monthly Total 121.7 July 2003 Calendar Day Daily Precipitation Totals (mm) 7 8.636 8 .254 9 9.906 11 7.620 16 1.524 18 1.016 21 23.622 22 30.480 23 3.048 24 .508 27 .254 Monthly Total 86.9 August 2003 Calendar Day Daily Precipitation Totals (mm) 1 45.212 2 6.350 3 48.768 4 1.524 5 19.050 6 5.334 7 3.048 8 .508 9 7.112 10 13.970 11 1.778 12 4.318 16 .508 17 6.350 22 2.286 29 5.842 Monthly Total 172.0 September 2003 Calendar Day Daily Precipitation Totals (mm) 1 30.734 2 44.450 3 4.826 4 6.350 13 3.048 14 8.128 15 1.524 16 4.064 19 6.858 22 1.270 23 55.626 25 1.270 26 1.270 27 4.318 28 20.066 29 .508 Monthly Total 194.3 October 2003 Calendar Day Daily Precipitation Totals (mm) 1 .762 2 1.270 4 11.938 14 8.636 15 13.462 19 6.350 22 .762 Total 43.2 Date Tot Prcp (mm) 10/27/2003 1.3 10/28/2003 43.9 10/29/2003 1.3 10/30/2003 38.6 10/31/2003 0.3 Total 85.4 November 2003 Date Tot Prcp (mm) 11/3/2003 1 11/5/2003 0.3 11/6/2003 8.6 11/7/2003 0.3 11/12/2003 1.3 11/13/2003 0.3 11/14/2003 0.3 11/18/2003 0.5 11/20/2003 32.5 11/21/2003 12.7 11/25/2003 7.9 11/26/2003 6.1 11/28/2003 0.8 11/29/2003 33.3 11/30/2003 0.5 Total 106.4 December 2003 Date Tot Prcp (mm) 12/11/2003 6.1 12/12/2003 36.3 12/16/2003 2.3 12/17/2003 0.3 12/18/2003 39.6 12/19/2003 0.5 12/20/2003 0.8 12/21/2003 0.3 12/23/2003 5.3 12/24/2003 2.3 12/25/2003 53.1 12/26/2003 3.3 12/31/2003 1 Total 151.2

CURRENTNESS REFERENCE:
Observed

SPATIAL DATA ORGANIZATION INFORMATION:
Indirect Spatial Reference: Site location and character The Hudson River National Estuarine Research Reserve (HUDNERR) is a multi- component site totaling approximately 5,000 acres. Each component of the reserve is referenced by River Mile (RM) of the Hudson River in New York State proceeding north from the southern tip of Manhattan (RM 0). The reserve includes the following four component sites: Piermont Marsh, Rockland County (RM 24)(41o02'30"N 73o54'15"W), Iona Island, Rockland County (RM 45)(41o18'15"N 73o58'45"W), Tivoli Bays, Dutchess County (RM 98)(42o02'15"N 73o55'10"W), and Stockport Flats, Columbia County (RM 124)(42o02'30"N 73o46'00"W). The four component sites include open water, tidal wetland, and adjacent upland buffer habitats and are representative of the diverse plant and animal communities that occupy the salinity gradient within the Hudson River Estuary. Development within the watersheds of the four component sites ranges from predominantly urban/suburban to forested/agricultural. The weather station (FS) is located at the Tivoli Bays component site in Annandale, NY (42°01'05.46"N 73°55'01.13"W). The weather monitoring equipment is mounted on a 30-foot aluminum tower. The tower is on the west side deck of the office building, 9 feet off the ground. The wind anemometer and wind speed sensors are located at the top of the tower, 39 feet off the ground. The light sensor is attached to the tower, 16 feet off the ground. The datalogger and the barometric pressure sensor are enclosed within a fiberglass case attached to the tower, 12 feet off the ground. A heated rain gauge is next to the tower, attached to the building, 16 feet off the ground. The temperature/humidity sensor is next to the tower, attached to the deck handrail, 12 feet off the ground. Although trees surround the area, the tree line begins approximately 60 feet from the tower in most directions. The trees are at similar heights to the tower, but the sensors are not shaded at that location. The tower is approximately 1.2 miles Southeast of the Tivoli South Bay water quality monitoring station, 2.3 miles Southeast of the Tivoli North Bay water quality monitoring station, and 0.2 miles Northwest of the Saw Kill Creek water quality monitoring station.