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| VIRGINIA COAST RESERVE LONG-TERM ECOLOGICAL RESEARCH |
Site PHCK, Month DEC, Year 1998 |
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| Day of Month | Precip (mm) | Max Temp. oC | Min Temp. oC | Mean Temp. oC | Wind Speed (m/s) | Wind Dir (deg.) | Vapor Press. (mb) | Solar Rad. KJ/m2 | PAR uE/m2 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.00 | 21 | 4 | 15.8 | 2.88 | 267 | 12.47 | 9974 | 15831 |
| 2 | 0.00 | 18 | 1 | 9.0 | 0.58 | 230 | 9.33 | 9936 | 15984 |
| 3 | 0.00 | 19 | 8 | 13.6 | 1.74 | 244 | 10.87 | 6339 | 10291 |
| 4 | 0.00 | 24 | 11 | 16.3 | 1.31 | 270 | 13.81 | 8510 | 14238 |
| 5 | 0.00 | 24 | 12 | 17.3 | 0.92 | 229 | 15.04 | 7174 | 12286 |
| 6 | 0.00 | 25 | 11 | 18.2 | 1.44 | 241 | 16.77 | 8858 | 15328 |
| 7 | 0.00 | 25 | 18 | 21.1 | 3.65 | 241 | 18.51 | 8946 | 15263 |
| 8 | 2.54 | 24 | 14 | 17.3 | 1.27 | 329 | 17.30 | 4839 | 8558 |
| 9 | 23.62 | 15 | 1 | 8.5 | 2.03 | 10 | 10.14 | 6610 | 10019 |
| 10 | 0.25 | 13 | -1 | 4.8 | 0.37 | 286 | 6.92 | 9598 | 14820 |
| 11 | 0.00 | 11 | 1 | 7.2 | 1.57 | 343 | 7.08 | 8291 | 12703 |
| 12 | 0.25 | 11 | -1 | 6.1 | 0.49 | 39 | 7.33 | 3096 | 5021 |
| 13 | 53.09 | 11 | 6 | 8.3 | 2.38 | 24 | 10.67 | 1561 | 2731 |
| 14 | 0.00 | 8 | -2 | 5.1 | 2.18 | 9 | 6.27 | 8838 | 13022 |
| 15 | 0.00 | 11 | -2 | 4.2 | 0.72 | 24 | 6.27 | 9438 | 14212 |
| 16 | 1.78 | 11 | 0 | 7.1 | 2.08 | 0 | 7.98 | 4969 | 7424 |
| 17 | 1.27 | 11 | 0 | 5.9 | 2.23 | 290 | 7.47 | 4912 | 7822 |
| 18 | 0.00 | 8 | -1 | 3.7 | 2.60 | 300 | 4.84 | 9475 | 14556 |
| 19 | 1.27 | 14 | -1 | 8.6 | 1.18 | 211 | 9.35 | 6521 | 10249 |
| 20 | 0.00 | 15 | 9 | 11.2 | 0.49 | 56 | 12.16 | 5711 | 8858 |
| 21 | 0.00 | 12 | 5 | 9.8 | 0.97 | 208 | 12.05 | 2850 | 4572 |
| 22 | 1.52 | 20 | 2 | 12.3 | 3.78 | 286 | 12.50 | 2919 | 4479 |
| 23 | 1.52 | 2 | -3 | -1.1 | 2.27 | 13 | 3.89 | 3209 | 5005 |
| 24 | 20.82 | 0 | -2 | -0.8 | 0.12 | 348 | 5.56 | 955 | 1877 |
| 25 | 9.40 | 2 | -3 | -1.4 | 0.00 | 0 | 4.98 | 8175 | 13307 |
| 26 | 2.03 | 1 | -4 | -1.7 | 0.00 | 0 | 5.10 | 2311 | 4145 |
| 27 | 2.03 | 8 | -4 | 2.3 | 0.10 | 69 | 6.52 | 8208 | 13486 |
| 28 | 8.89 | 7 | 4 | 5.3 | 1.20 | 5 | 8.65 | 1725 | 3115 |
| 29 | 0.25 | 7 | 4 | 5.2 | 1.39 | 320 | 8.72 | 1417 | 2568 |
| 30 | 3.81 | 5 | -3 | 1.3 | 4.32 | 302 | 5.15 | 5886 | 9159 |
| 31 | 0.51 | -0 | -6 | -3.0 | 0.93 | 255 | 4.21 | 2724 | 4524 |
| Mon. Tot. Precip. 134.9 mm | Mean wind vel. 1.522 m/s |
| Mon. Mean Temp. 7.7 deg. C | Wind dir 304 deg |
| Mean Max. Temp. 12.4 deg. C | Mean Min. Temp. 2.5 deg. C |
| Extreme Max. Temp 25.1 deg. C | Mean vapor press 9.29 mb |
| Extreme Min. Temp -6.4 deg. C | Total Solar Rad 183975 KJ/sq. m |
| Total photosyn. 295451 uEin/sq.m |
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| Daily Total Precipitation (mm) |
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| Hourly Mean Temperatures (deg. C) |
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| Hourly Max Min and Mean Temperatures (deg. C) |
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| Wind Speed (m/s) |
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| Frequency of Wind Direction |
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| Wind Vectors (circle=1.5 m/s) |
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| Relative Humidity (percent) |
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| Photosynthetically Active Radiation (micro-einsteins per m squared) |
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| Hourly Photosynthetically Active Radiation (micro-einsteins per m squared) |
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| Solar Radiation (KiloJoules per Meter Squared) |
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| Hourly Solar Radiation (KiloJoules per Meter Squared) |
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| Hours of Station Operation |
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| Data Logger Battery Voltage and Internal Logger Temperature |