Frequently asked questions.

Our FAQs are aimed to help resolve common queries or issues you may have with either our services, data or mobile apps. Click on a FAQ to reveal the answer!

About EarthSystemData [ESD]

  • What is EarthSystemData?

    EarthSystemData is an innovative combined web and app-based informational service providing you with the latest overview of current climatic conditions and climate predictions for your town and city.  See “Data and Information” for a precise overview of what information our interface supplies.

  • Where is EarthSystemData Based?

    We are principally a digital entity but are physically based in Norwich, United Kingdom, a city that has first-class climate and Earth system science heritage! It is the birthplace of the de-facto global temperature record used by international agencies to measure changes in the Earth’s climate and a city of excellence with respect to climate and Earth system science. Our product is driven by VPS-hosting services in California, U.S.A.


  • Who runs EarthSystemData?

    EarthSystemData was founded by climate scientist Dr. Craig Wallace. He remains an active climate science researcher in addition to founding EarthSystemData. ESD is supported by a team of technical and scientific consultants ensuring our analyses, presentation and products are professional-grade and world-class. See our About page for more information.

Using ESD & Product Information

  • What Information Can I See Via EarthSystemData?

    The ESD interface currently allows you to explore information upon the following variables:

    1. The average temperature for the month
    2. The average of the maximum temperatures for the month
    3. The average of the minimum temperatures for the month
    4. The combined total of rainfall and snowfall for the month

    For each variable, the following information is available either on the global maps, or retrievable by the city and town search:

    1. The expected value: This is the value that is expected given the historical climate of 1951-1980. e.g. 8°C.
    2. The actual anomaly: This is the value of what actually happened for the month – expressed as a departure from the expected value. e.g. -2°C means it was two degrees colder than what was expected.
    3. Future projections: This displays what the projected values of the variables are for the same month (e.g. October) and location for the coming periods of 2020s, 2040s, 2060s and 2080s.  Information here is derived from numerical simulations of the future climate under continued greenhouse gas emissions. See the below question for more details.
  • Joining and accessing ESD via the website:

    Signing up at the website is secure and easy. Join here.

    We take payment via PayPal so you can join in confidence.

    By joining, you will get 30 days use for free before commencing the £2.99 per month rolling account.

    We think that’s excellent value. You are in control and can cancel when ever you want, either from within your PayPal account or from the account home page here.

    After you have joined you can also download and use the apps to access ESD! See below.

    You can also download the app and join with your Apple or Google Play account. In that case, you control your account from your Apple and Google Play accounts – and payment is take from those accounts.

  • Using the ESD App:

    Option 1:  Joining on the website first.

    We recommend this method. You join via the website here.  You can then login to the website and enjoy ESD.

    To use the apps (you are not charged again), download our app via the stores:

    • Android ESD  app here
    • Apple ESD  app here

    Open the app and, on any of the intro screens tap “Login”:

    You will then be taken to the login screen where you enter the Login and Password  you chose on the site:


    Option 2: Join in the app:

    If you do not register here on the website, you can join using your Google or Apple account from within the app.  Download the app:

    • Android ESD  app here
    • Apple ESD  app here

    Swipe all the way through the intro screens to this final screen and tap “Purchase”:

    You can then control your subscription from Google Play, or Apple Account ‘my subscription settings’ and payment – after the free 30 days – is taken from your app account. Simple and convenient control for you.

  • How often is ESD updated?

    Current updates are made monthly. This allows a full month to accrue before we analyse where the planet has been warmer, wetter, drier or colder than normal. By allowing a full month to elapse before we present an analysis we iron out, to some extent, the effects of short-term weather events and begin to get a feeling for how the planet is behaving on slower timescales.

  • Where Are Your Data Sourced From?

    We use world-class official raw data from the United States National Oceanographic and Atmospheric Agency (N.O.A.A.) to generate our products that depict current conditions.   Use of these data does not imply official endorsement by N.O.A.A. or any other government agency. The data are, in fact, a numerical solution of a global forecasting system, incorporating observations where possible.  The advantage of this technique is that the global coverage is complete. Exact numbers may be different to other summaries of global climate and weather which use alternative analysis techniques.


  • How are the Future Climate Projections Made?

    Future projections of each of the variables are available to explore within the EarthSystemData interface – again searchable by town and city. These projections are made by a statistical methodology derived from the current latest-generation of international global climate circulation models (GCMs).  GCMs are highly complex computational models of the Earth’s atmosphere, oceans and other global systems that can be executed to simulate the effects of both natural and man-made (i.e. greenhouse gas) impacts upon the Earth’s climate for the coming years.  The computational tool we use here is the ClimGen pattern scaler (inventor rights, Osborn, Mitchell, Wallace and U.E.A.) under license from U.E.A. Ltd, University of East Anglia. ClimGen has been used to provide climate change scenarios for numerous published global climate impact studies that have informed society and policy.

    We currently use simulations of the future climate that envisage an approximate doubling of greenhouse concentrations by the year 2100. You can learn more about the experiment configurations here. We use data from these particular experiments as they are the closest resemblance to the current trajectory of greenhouse gas emissions. The GCMs used to simulate the future climate also account for natural drivers of climate change.

Payments & Subscriptions

Contacting Us

  • How can I contact you?

    If you have not found the answer to your enquiry or would like to contact us for customer services, business enquiry, or media purposes please contact us here: info@earthsystemdata.com.

    // Thank you for your interest and custom. One planet. One chance.