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| VIRGINIA COAST RESERVE LONG-TERM ECOLOGICAL RESEARCH |
Site PHCK, Month APR, Year 1997 |
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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 | 1.78 | 13 | 1 | 7.9 | 6.85 | 306 | 5.01 | 20931 | 39902 |
| 2 | 0.00 | 16 | 4 | 10.3 | 2.99 | 295 | 5.34 | 22251 | 43046 |
| 3 | 0.00 | 19 | 4 | 11.6 | 1.20 | 164 | 7.89 | 20514 | 39299 |
| 4 | 0.00 | 26 | 10 | 17.4 | 1.63 | 213 | 10.29 | 20918 | 40201 |
| 5 | 0.00 | 16 | 10 | 13.1 | 1.35 | 86 | 12.09 | 15038 | 30506 |
| 6 | 4.57 | 23 | 12 | 16.6 | 1.41 | 166 | 16.66 | 13771 | 28421 |
| 7 | 0.25 | 26 | 14 | 19.8 | 2.99 | 194 | 16.78 | 18295 | 34989 |
| 8 | 1.78 | 17 | 9 | 12.8 | 3.33 | 267 | 6.10 | 23047 | 44093 |
| 9 | 0.00 | 13 | 3 | 7.1 | 4.51 | 302 | 5.02 | 22255 | 43237 |
| 10 | 0.00 | 9 | -1 | 3.6 | 2.61 | 301 | 4.13 | 23623 | 45768 |
| 11 | 0.00 | 15 | -1 | 8.9 | 0.96 | 165 | 7.43 | 20794 | 39617 |
| 12 | 8.64 | 17 | 11 | 13.5 | 1.25 | 166 | 14.32 | 6279 | 13290 |
| 13 | 1.52 | 22 | 10 | 16.2 | 3.37 | 215 | 15.46 | 9413 | 18816 |
| 14 | 0.00 | 13 | 3 | 8.7 | 3.23 | 297 | 6.02 | 23504 | 44151 |
| 15 | 0.00 | 16 | 1 | 8.9 | 1.07 | 247 | 8.28 | 23625 | 44328 |
| 16 | 0.00 | 18 | 2 | 11.3 | 1.41 | 169 | 8.51 | 23328 | 43051 |
| 17 | 0.00 | 18 | 8 | 12.9 | 3.03 | 258 | 10.96 | 11264 | 21993 |
| 18 | 0.00 | 11 | 5 | 8.2 | 5.40 | 262 | 5.99 | 10108 | 19667 |
| 19 | 0.00 | 17 | 7 | 11.3 | 5.00 | 265 | 4.65 | 24652 | 47052 |
| 20 | 0.00 | 17 | 2 | 10.2 | 1.34 | 282 | 8.12 | 24146 | 45723 |
| 21 | 0.00 | 15 | 2 | 9.6 | 0.86 | 68 | 10.56 | 6279 | 13001 |
| 22 | 0.00 | 13 | 6 | 9.8 | 1.87 | 50 | 10.95 | 5232 | 10742 |
| 23 | 8.64 | 9 | 8 | 8.4 | 3.58 | 66 | 10.11 | 2250 | 5225 |
| 24 | 0.00 | 15 | 6 | 9.6 | 3.22 | 351 | 9.53 | 15757 | 29784 |
| 25 | 0.00 | 18 | 7 | 12.2 | 1.74 | 235 | 10.55 | 19070 | 36326 |
| 26 | 0.00 | 20 | 6 | 13.1 | 1.37 | 252 | 10.49 | 24074 | 45488 |
| 27 | 0.00 | 17 | 6 | 12.1 | 0.58 | 128 | 11.69 | 6402 | 13214 |
| 28 | 0.00 | 19 | 12 | 16.0 | 2.44 | 202 | 17.50 | 3601 | 8014 |
| 29 | 0.00 | 15 | 7 | 11.3 | 0.79 | 20 | 10.91 | 13848 | 26083 |
| 30 | 0.00 | 20 | 4 | 12.7 | 0.59 | 169 | 11.35 | 25201 | 47314 |
| Mon. Tot. Precip. 27.2 mm | Mean wind vel. 2.399 m/s |
| Mon. Mean Temp. 11.5 deg. C | Wind dir 269 deg |
| Mean Max. Temp. 16.7 deg. C | Mean Min. Temp. 6.0 deg. C |
| Extreme Max. Temp 26.2 deg. C | Mean vapor press 9.76 mb |
| Extreme Min. Temp -1.4 deg. C | Total Solar Rad 499470 KJ/sq. m |
| Total photosyn. 962340 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 |