Download Free Global Daily Precipitation and Temperature Data

Accessing climate data is essential for researchers, meteorologists, and anyone interested in historical weather patterns. In this tutorial, we will walk you through the process of downloading daily precipitation and temperature data from the National Oceanic and Atmospheric Administration (NOAA) using the Global Historical Climatology Network (GHCN) dataset. Here is the link

Step 1: Understanding the Dataset

The GHCN Daily version 3 integrates daily climatic observations from approximately thirty different data sources. This version contains measurements from over ninety thousand land-based stations worldwide, with about two-thirds dedicated to precipitation measurement. More than twenty-five thousand of these stations are regularly updated with observations from the last month.

Step 2: Accessing the NCEI GIS Map Viewer

To download the dataset, start by navigating to the NCEI GIS map viewer. This tool allows you to visualize and access the dataset you need.

Step 3: Selecting Your Study Area

Once the map viewer loads, you can enter your desired location. For example, type “Chennai” to focus on that area. The map will zoom into your specified location.

Step 4: Choosing Specific Stations

To select specific climate stations, use the map tools available in the viewer. Click on the station of your choice to view its details, including the station ID and the period of record.

Step 5: Selecting Multiple Stations

You can select multiple stations within a defined area by using the rectangular selection tool. This allows you to gather data for all relevant stations in and around your study area.

Step 6: Adding Stations to Your Cart

After selecting your desired stations, click the “Add to Cart” option. This will take you to the cart options where you can customize your data download.

Step 7: Customizing Your Download Options

In the cart, set your file format to “custom GHCN daily CSV file format.” Select your desired date range and ensure you include all necessary data types, including precipitation and temperature averages.

Step 8: Reviewing Your Order

Review your order to confirm that all selected items are correct. Ensure the dataset covers the required date range and includes the relevant stations.

Step 9: Submitting Your Request

Enter your email address to receive the download link for your dataset. After submitting, you will receive an email confirmation once your request is processed.

Step 10: Downloading Your Data

Follow the link provided in your email to download your dataset in CSV format. Open the file to view the station ID, name, latitude, longitude, elevation, precipitation, and temperature data.

Frequently Asked Questions

1. What is the GHCN dataset?

The GHCN dataset is a collection of climate data that includes daily observations from thousands of weather stations worldwide, maintained by NOAA.

2. How often is the GHCN dataset updated?

Many stations in the GHCN dataset are updated regularly, with more than twenty-five thousand stations receiving updates within the last month.

3. Can I access global climate data?

Yes, for global climate data, you can navigate to the World Meteorological Organization (WMO) section in the NCEI GIS map viewer.

4. How can I use this data?

This data can be used for various purposes, including climate research, historical weather analysis, and environmental studies.

Additional Resources

For more information on the dataset, you can check out the Global Historical Climatology Network – Daily (GHCN-Daily), Version 3.