Ground-Based Greenhouse Gas Concentration and Microclimate Time-Series from Zero-Grazing in Arusha and Free-Range Dairy Cattle in Mbeya, Tanzania (2023–2025)

# Ground-Based Greenhouse Gas  Concentration and Microclimate Time-Series from Zero-Grazing in Arusha and Free-Range Dairy Cattle in Mbeya, Tanzania (2023–2025)

## 1. Description
This dataset contains greenhouse gas concentration and microclimate measurements collected from a zero-grazing and free-grazing dairy farm in the Arusha and Mbeya regions, Tanzania. 
The data were collected using ground-based sensors between January 2023 and May 2025 at regular intervals.

The main goal is to support research on modeling and forecasting methane (CH₄), carbon dioxide (CO₂), and nitrous oxide (N₂O) emissions in relation to wind speed, temperature, and humidity.

## 2. Files

### 2.1 data/emissions_timeseries.csv
- **Datetime**: timestamp (local time, Africa/Dar_es_Salaam)
- **CO2_ppm**: carbon dioxide concentration in ppm
- **CH4_ppb**: methane concentration in ppb
- **N2O_ppb**: nitrous oxide concentration in ppb
- (Add any other variables here)

### 2.2 data/temperature_humidity_timeseries.csv
- **Datetime**: timestamp (same as above)
- **Temperature_C**: air temperature in °C
- **Humidity_pct**: relative humidity in %

## 3. Data collection
- **Location**: Mbeya region, Tanzania (approximate, no exact coordinates for privacy)
- **System**: zero-grazing dairy
- **Measurement height**: sensors placed 2 feet above ground
- **Sampling interval**: (e.g., 1 minute, later aggregated to hourly/daily)

## 4. Usage notes
- Missing values are coded as: NA
- Time zone: Africa/Dar_es_Salaam (UTC+3)
- Please cite this dataset if you use it in publications.

## 5. License
This dataset is released under the CC BY 4.0 license (or whichever you choose).