uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read Emery Boose https://orcid.org/0000-0003-4820-0231 Ernest Gould Mark VanScoy 2026 English

This dataset provides daily minimum, maximum, and mean air temperature and 24-hour precipitation data from Harvard Forest for long-term climate studies. It combines measurements from the original manual weather station (Shaler Met Station, 1964-2002, 42.53167 N, 72.18937 W, dataset HF000) with measurements from the current automated weather station (Fisher Met Station, since 2001, 42.53311 N, 72.18968 W, dataset HF001). Gaps in the Shaler data were filled using data from nearby stations. Data from a 12-month period when both stations were operational were used to adjust the Shaler data to account for differences in microclimate at the two sites. This dataset is updated annually.

air temperature climate meteorology precipitation LTER controlled vocabulary disturbance LTER core area Harvard Forest HFR LTER USA HFR default

This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.

Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html CC0-1.0 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf300 Prospect Hill Tract (Harvard Forest). Coordinates based on WGS84 datum. -72.18968 -72.18937 +42.53311 +42.53167 342 342 meter 1964 2025 ongoing. Data updated annually Information Manager Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 hf-im@lists.fas.harvard.edu Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu

Gaps in the Shaler data were filled using daily data from Amherst MA and Bedford MA downloaded from the National Climatic Data Center. Overlap data when the Shaler and Fisher stations were both operational (2001-07-01 to 2002-06-30) were used to adjust the Shaler data to account for differences in microclimate at the two sites. Because daily observation periods were not the same across stations, gap filling and adjustments were based on comparisons of mean air temperature and total precipitation over the entire observation period. Details of the analysis may be found the R scripts.

Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu https://ror.org/059cpzx98 pointOfContact The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210. hf300-01-annual-m.csv annual (metric) hf300-01-annual-m.csv 2149 a33b7fbb446e50b79105aa36dbe24154 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p30/hf300/hf300-01-annual-m.csv year year YYYY airt average air temperature. Average of daily averages. celsius 0.1 real NA missing value airtmax average maximum air temperature. Average of daily maximums. celsius 0.1 real NA missing value airtmin average minimum air temperature. Average of daily minimums. celsius 0.1 real NA missing value airtmmx extreme maximum air temperature. Maximum of daily maximums. celsius 0.1 real NA missing value airtmmn extreme minimum air temperature. Minimum of daily minimums. celsius 0.1 real NA missing value prec total precipitation. Includes water equivalent of snow. Sum of daily totals. millimeter 1 real NA missing value 62 hf300-02-annual-e.csv annual (english) hf300-02-annual-e.csv 2318 fd7736450f592c442eba9b2f2a7e6939 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p30/hf300/hf300-02-annual-e.csv year year YYYY airt average air temperature. Average of daily averages. fahrenheit 0.1 real NA missing value airtmax average maximum air temperature. Average of daily maximums. fahrenheit 0.1 real NA missing value airtmin average minimum air temperature. Average of daily minimums. fahrenheit 0.1 real NA missing value airtmmx extreme maximum air temperature. Maximum of daily maximums. fahrenheit 0.1 real NA missing value airtmmn extreme minimum air temperature. Minimum of daily minimums. fahrenheit 0.1 real NA missing value prec total precipitation. Includes water equivalent of snow. Sum of daily totals. inch 1 real NA missing value 62 hf300-03-monthly-m.csv monthly (metric) hf300-03-monthly-m.csv 26782 e8bdd5bf008afb6577afa7a9dada9872 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p30/hf300/hf300-03-monthly-m.csv date date YYYY-MM airt average air temperature. Average of daily averages. celsius 0.1 real NA missing value airtmax average maximum air temperature. Average of daily maximums. celsius 0.1 real NA missing value airtmin average minimum air temperature. Average of daily minimums. celsius 0.01 real NA missing value airtmmx extreme maximum air temperature. Maximum of daily maximums. celsius 0.1 real NA missing value airtmmn extreme minimum air temperature. Minimum of daily minimums. celsius 0.1 real NA missing value prec total precipitation. Includes water equivalent of snow. Sum of daily totals. millimeter 0.1 real NA missing value 744 hf300-04-monthly-e.csv monthly (english) hf300-04-monthly-e.csv 27930 94b10573a81c5bfdecdcf612a36f49a8 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p30/hf300/hf300-04-monthly-e.csv date date YYYY-MM airt average air temperature. Average of daily averages. fahrenheit 0.1 real NA missing value airtmax average maximum air temperature. Average of daily maximums. fahrenheit 0.1 real NA missing value airtmin average minimum air temperature. Average of daily minimums. fahrenheit 0.01 real NA missing value airtmmx extreme maximum air temperature. Maximum of daily maximums. fahrenheit 0.1 real NA missing value airtmmn extreme minimum air temperature. Minimum of daily minimums. fahrenheit 0.1 real NA missing value prec total precipitation. Includes water equivalent of snow. Sum of daily totals. inch 0.1 real NA missing value 744 hf300-05-daily-m.csv daily (metric) hf300-05-daily-m.csv 797371 052ec87791d55b3aa6ba409552a7e0b1 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p30/hf300/hf300-05-daily-m.csv date date YYYY-MM-DD airt average air temperature celsius 0.1 real NA missing value f.airt flag for average air temperature E Estimated. Value estimated from incomplete measurements or from other sources. airtmax maximum air temperature celsius 0.1 real NA missing value f.airtmax flag for maximum air temperature E Estimated. Value estimated from incomplete measurements or from other sources. airtmin minimum air temperature celsius 0.1 real NA missing value f.airtmin flag for minimum air temperature E Estimated. Value estimated from incomplete measurements or from other sources. prec total precipitation. Includes water equivalent of snow. millimeter 0.1 real NA missing value f.prec flag for total precipitation E Estimated. Value estimated from incomplete measurements or from other sources. 22646 hf300-06-daily-e.csv daily (english) hf300-06-daily-e.csv 802545 86916975ae92c20e6b1a862673a382e3 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p30/hf300/hf300-06-daily-e.csv date date YYYY-MM-DD airt average air temperature fahrenheit 0.1 real NA missing value f.airt flag for average air temperature E Estimated. Value estimated from incomplete measurements or from other sources. airtmax maximum air temperature fahrenheit 0.1 real NA missing value f.airtmax flag for maximum air temperature E Estimated. Value estimated from incomplete measurements or from other sources. airtmin minimum air temperature fahrenheit 0.1 real NA missing value f.airtmin flag for minimum air temperature E Estimated. Value estimated from incomplete measurements or from other sources. prec total precipitation. Includes water equivalent of snow. inch 0.1 real NA missing value f.prec flag for total precipitation E Estimated. Value estimated from incomplete measurements or from other sources. 22646 hf300-07-rscripts.zip R scripts hf300-07-rscripts.zip 3659 1ac42db7487e13e1c96140d93032fec7 zip R script https://harvardforest.fas.harvard.edu/data/p30/hf300/hf300-07-rscripts.zip script atmosphere watershed long-term measurement 1,2,3,4,5,6 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf000 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf001 https://harvardforest.fas.harvard.edu/data-archives/data-in-real-time/met-hydro-stations/