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[Jackie Bullinger]

TheUSDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which perennial plants are most likely to thrive at a location. The map is based on the average annual extreme minimum winter temperature, displayed as 10-degree F zones and 5-degree F half zones. A broadband internet connection is recommended for the interactive GIS-based map above.

To find the Plant Hardiness Zone at your location quickly, enter your zip code in the Quick Zip Code Search box in the map above, or click anywhere on the map to view the corresponding interactive map.

ARS scientists have spent the past several years working to develop state-of-the-art carbon mapping equipment that provides growers with precise and timely information about the quality of their soil.

Compute Engine resources are hosted in multiple locations worldwide.These locations are composed of regions and zones. A region is a specificgeographical location where you can host your resources. Regions have three ormore zones. For example, the us-west1 region denotes a region on the westcoast of the United States that has three zones: us-west1-a, us-west1-b,and us-west1-c.

Resources that live in a zone, such asvirtual machine instances or zonalpersistent disks, are referred to as zonal resources.Other resources, likestatic external IP addresses,are regional. Regional resources can be used by any resource in that region,regardless of zone, while zonal resources can only be used by other resources inthe same zone.

For example, to attach a zonal persistent disk to an instance, both resourcesmust be in the same zone. Similarly, if you want to assign a static IP addressto an instance, the instance must be in the same region as the static IPaddress.

Putting resources in different zones in a region reduces the risk of aninfrastructure outage affecting all resources simultaneously.Putting resources in different regions provides an even higher degree of failureindependence. This lets you design robust systems with resources spreadacross different failure domains.

Only certain resources are region- or zone-specific. Other resources, such asimages, are global resources that can be used by any other resources across anylocation. For information on global, regional, and zonal Compute Engineresources, seeGlobal, Regional, and Zonal Resources.

Each region in Compute Engine contains a number of zones. Each zone namecontains two parts that describe each zone in detail. The first part of the zonename is the region and the second part of the name describes the zone inthe region:

Regions are collections of zones. Zones have high-bandwidth,low-latency network connections to other zones in the same region. In orderto deploy fault-tolerant applications that have high availability, Googlerecommends deploying applications across multiple zones and multiple regions.This helps protect against unexpected failures of components, up to andincluding a single zone or region.

Choose regions that makes sense for your scenario. For example, if youonly have customers in the US, or if you have specific needs that requireyour data to live in the US, it makes sense to store your resources inzones in the us-central1 region or zones in the us-east1 region.

Compute Engine implements a layer of abstraction between zones and thephysical clusters where the zones are hosted. A cluster represents a distinctphysical infrastructure that is housed in a data center. Each zone is hosted inone or more clusters and Compute Engine independently maps zones toclusters for each organization. For example, the us-central1-a zone for yourorganization might not map to the same cluster as the us-central1-a zone foranother organization.

For most organizations, Compute Engine ensures that all projects in anorganization have a consistent zone to cluster mapping. For organizations withprojects that useVPC Network Peering orPrivate services accessto share networks or services with other organizations, Compute Enginetries to ensure that the peered organizations all have a consistent zone tocluster mapping. In the case of large-scale SaaS providers, for example,Compute Engine might not provide a consistent mapping forall peered organizations. In these cases, Compute Engine ensures thatthe peered projects have a consistentzone to cluster mapping.

Certain resources, such as static IPs, images, firewall rules, and VPC networks,have defined project-wide quota limits and per-region quota limits. When youcreate these resources, it counts towards your total project-wide quota or yourper-region quota, if applicable. If any of the affected quota limits areexceeded, you won't be able to add more resources of the same type in thatproject or region.

For example, if your global target pools quota is 50 and you create 25 targetpools in example-region-1 and 25 target pools in example-region-2, you reachyour project-wide quota and won't be able to create more target pools in anyregion within your project until you free up space. Similarly, if you have aper-region quota of 7 reserved IP addresses, you can only reserve up to 7 IPaddresses in a single region. After you reach that limit, you will either needto reserve IP addresses in a new region or release some IP addresses.

Google regularly maintains its infrastructure by patching systems with thelatest software, performing routine tests and preventative maintenance, andgenerally ensuring that Google infrastructure is as fast and efficient as Googleknows how to make it.

By default, all instances are configured so that these maintenance events aretransparent to your applications and workloads. Google uses a combination ofdatacenter innovations, operational best practices, and live migrationtechnology to move running virtual machine instances out of the way ofmaintenance that is being performed. Your instance continues to run within thesame zone with no action on your part.

Compute Engine automatically migrates your running instance. Themigration process will impact guest performance to some degree but yourinstance remains online throughout the migration process. The exact guestperformance impact and duration depends on many factors, but it is expectedmost applications and workloads will not notice. For more information,see Live Migration.

For example, by hosting instances in zones europe-west1-b andeurope-west1-c, if europe-west1-b fails unexpectedly, your instancesin zone europe-west1-c will still be available. However, if you hostall your instances in europe-west1-b, you will not be able toaccess any instances if europe-west1-b goes offline. Also, consider hostingyour resources across regions. For example, to plan for continuedavailability of your workload in the unlikely scenario that theeurope-west1 region experiences a failure, consider deploying the workloadon backup instances in the europe-west3 region. For more tips on how todesign systems for availability, seeDesigning Robust Systems.

You can use the Google Cloud console, the Google Cloud CLI, or REST tosee available regions and zones.You can also use thegcloud compute machine-types list commandto get a complete list of available machine types in all regions and zones.For example, gcloud compute machine-types list --filter="name=t2d-standard-4"displays all the regions and zones where t2d-standard-4 machine types areavailable.

Each zone offers a variety of processors. When you create aninstance in a zone, your instance uses the default processor supported in thatzone. For example, if you create an instance in the us-central1-a zone, yourinstance by default uses an Intel Haswell processor, unless you specify anotheroption.

The following sortable table lets you select different options to see whereresources are available. For example, you can select Europe from the Selecta location drop-down menu, and C3D from the Select a machine typedrop-down menu to see a list of zones where C3D machines are available in Europe.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Each year in the spring, National Work Zone Awareness Week (NWZAW) is held to bring national attention to motorist and worker safety and mobility issues in work zones. Since 1999, FHWA has worked with the American Association of State Highway and Transportation Officials (AASHTO) and the American Traffic Safety Services Association (ATSSA) to coordinate and sponsor the event. The first national event was held at a work zone in Springfield, VA, in April 2000. Over the years, other transportation partners have joined the effort to support NWZAW. In addition to a national event conducted each year, many States host their own NWZAW events.

Instructor Planning Guide: Zone Chairperson Workshop instructors should use this guide to help them prepare to lead the Zone Chairperson Workshop. It contains instructions for setup and other helpful information to lead this workshop.

Completing a Zone Assessment: This pre-assignment is designed to increase awareness of zone issues and challenges and help determine its current state. This information will be used in the workshop sessions.

The Zone Goal Setting and Action Planning session is an in-depth exploration of SMART Goal Setting and Action Planning. Participants will have the opportunity to work with goals they have for their zone and district.

We work with cities and counties to make healthy choices easier where people live, work, learn, and play. Our innovative, environmental approach to well-being optimizes policy, urban design, food systems, and social networks.

Common lifestyle factors made a significant impact on the life expectancies of centenarians in the blue zones. Our books, plant-based food products, and other goods found in the Blue Zones Store can help you incorporate some of these best-kept longevity secrets into your own life.

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